f1 - wes (oic) 072310 (area - a)

NO. QUESTIONS CHOICE A CHOICE B CHOICE C CHOICE D

1 A ship steaming on a course of 246˚ T at 17

knots. At 2107 a lighthouse was observed

bearing 207 deg T and at 2119 the same

lighthouse bears 179˚ T. What is the ship's

distance off at second bearing?4.6 miles 3.9 miles 4.2 miles 5.1 miles

2 A ship is steaming a course of 090˚ T at a

speed of 14 knots. At 1841H you observed a

lighthouse bearing 053 deg.T and at 1904H,

the same lighthouse bears 031˚ T. What is

the distance to the lighthouse when

abeam?

7.4 miles 8.3 miles 6.5 miles 3.4 miles

F1 - WES (OIC) 072310

Area-A: Pre-Voyage Procedures, Principles of Celestial Navigation, Terrestrial Navigation,

Electronic Navigation, Magnetic and Gyro Compass

3 Aship is steaming a course of 090˚T at a

speed of 14 knots. At 1841, you observed a

lighthouse bearing 053°T and at 1904, the

same lighthouse bears 031˚T. What will be

the time when the lighthouse is abeam of

your vessel?

1923 1926 1919 1920

4 You are steaming on course 090˚T at 14

knots when a lighthouse was observed

bearing 053˚ T at 1841. The same

lighthouse bears 031˚T at 1904. What is

the distance off the lighthouse at second

bearing?


5 A ship is on course 253˚ T at 14 knots. At

2329 a lighthouse was observed bearing

282˚ T At 2345 the same lighthouse bears

300 deg.T Find the ship's distance off at

second bearing?

5.9 miles 3.7 miles 4.2 miles 52 miles

6 You are steering 078˚ T, and a light was

seen dead ahead at a distance of 15.6 miles

at 2316 you change course to pass the light

abeam to port at a distance of 4.5 miles. If

you are making 17 knots, what is the time

when abeam of the light?

0009H 0011H 0007H 0013H


seen dead ahead at a distance of 12.7 miles

at 0017H you change course to pass the

light abeam to starboard at a distance of

3.5 miles. If you are making 11 knots, what

is the time when abeam of the light?

0124H 0120H 0009H 0126H

8 You are steering 173˚T and a light was

picked up dead ahead at a distance of 13.9

miles at 0054. You change course to pass

the light 4.5 miles off abeam to port. If you

making 21 knots, what will be the time


0131H 0129H 0133 H 0135H

9 You are steering 163˚ T and a light was

picked up dead ahead at a distance of 11


the light 2 miles off abeam to starboard. If

you making 13 knots, what will be the time


0232H 0230H 0234H 0132H

10 A vessel was steaming on a course 168˚ T at

a speed of 18 knots. At 1426H a buoy was

sighted bearing 144˚ T . At 1434 another

bearing of the buoy was taken at 116˚ T.

What is the distance off the second bearing

and the predicted distance when abeam?

2.0 miles,2nd

bearing;

1.8 miles

abeam

2.7 miles 2nd

bearing;

1.8 miles

abeam

2.3 miles, 2nd

bearing; 2

miles,abeam

2.0 miles, 2nd

bearing;

1 mile, abeam

11 You desire to make good a true course of

067˚T.The variation is 11˚ West, the

magnetic compass deviation is 3˚ East and

the gyro error is 1˚ West. A northwesterly

wind produces a 5 degree leeway. What

should be the course to steer per standard

compass to make good the true course?

070 psc 054 psc 064 psc 074 psc


129˚T. The variation is 7˚ East, magnetic

compass deviation is 4˚ East and the gyro

error is 2˚ West. An easterly wind produces

a 4 degree leeway. What should be the

course to steer per magnetic compass in

order to make good the true course?

114 psc 116 psc 076 psc 126 psc

13 The True course between two points is

023˚T The gyro error is 1˚West and you

make an allowance of 4 degree leeway for

an East wind. What gyro course should be

steered in order to make the True course

good?

026 pgc 020 pgc 021 pgc 028 pgc

14 The True course between two points is

041˚T. The gyro has an error of 1˚ West.

You make an allowance of 2 degree leeway

for an east-southeast wind. What gyro

course should be steered to make the True

course good?

044 pgc 026 pgc 043 pgc 040 pgc

15 Your vessel is steering a course of 027˚ psc.

The variation for the locality is 19˚ West

and the deviation of the compass is 2˚ East.

The wind is from the North-northwest,

producing a 5 degree Leeway. What True

course are you making good?

015 T 005 T 026 T 044 T

16 A ship was on course 253˚ T at 14 knots. At

2329 a lighthouse was observed bearing

282˚ T At 2345, the lighthouse bears 300˚

T. What is the ship's distance off the

second bearing and distance when abeam?

5.9 mi./ 4.3

mi.

3.7 mi./ 4.3

mi.

4.2 mi./ 5.9

mi.

5.2 mi./ 5.9

mi.

17 You are steering 019˚T, and a light was


miles at 0216H. You change course to pass

the light 3 miles off abeam to port. If you

are making 14 knots, what is your ETA at

the position 3 miles off the light?

0304H 0332H 0340H 0232H

18 You are steering 231˚ T, and a light is picked

up dead ahead at a distance of 12.3 miles

at 0338H. You then change course to pass


you are making 16.5 knots, what is your

ETA at the position 4 miles off the light?

0420H 0342H 0424H 0644H

19 You are steering 287˚T and a light was


miles at 0419H. You change course to pass


you are making 13 knots, what is your ETA

at the position 4 miles off the light?

0547H 0447H 0432H 0420H




the light 3.5 miles off abeam to port. If you

are making 12 knots, what is your ETA at

the position 3.5 miles off the light?

0644H 0547H 0531H 0544H

21 Your ship is sailing at 20 knots on course

160˚T. At 1840 hours you observe a

lighthouse bearing 205˚ T. At 1908 hours,

the light bears 250˚ T. What is your

distance off the lighthouse at the second

bearing?

9.3 miles 9.8 miles 10.2 miles 12. 0 miles

22 Your ship is sailing on course 250˚ T at 20

knots. At 1418 hours you observe a

lighthouse bearing 205˚T At 1446 hours,

the same lighthouse bears 160˚ T. At what

distance off will your vessel be abeam of

the light?


23 Your vessel is on course of 343˚T at 14

knots. At 2156H a light bears 320.5˚T and

at 2217H the same light bears 298˚T. At

what time and at what distance off will

your vessel be abeam of the light?

2232H, 3.4

miles

2228H, 4.3

miles

2235H, 9.3

miles

2241H, 4.6

miles

24 Your vessel is proceeding down a channel

and you see a pair of range lights that are in

line ahead. The chart indicates that the

direction of this pair of lights is 229˚T and

the variation is 6˚ West. If the heading of

your vessel at the time of the sighting is

232˚ psc, what is the correct deviation?

3 deg. East 3 deg.West 9 deg. East 9 deg. West

25 While proceeding up a channel on a course

of 350˚ pgc you took a bearing on a pair of

range lights and got a bearing of 355˚ pgc.

The true bearing on the nautical chart is

indicated as 357˚T. The variation for the

locality is 22˚ West. The ship's course psc is

015˚. The deviation on the present heading

is ______.

1 deg. West 1 deg. East 4 deg. West 5 deg. West


Variation for the area is 9˚ West and the

deviation is 2˚ East. The wind is from East

producing a 5˚ leeway. What true course

are you making good?

214 deg True 223 deg.True 204 deg.True 227 deg.True

27 Your vessel is steering a course of 197˚ psc,

variation for the area is 7˚ East and the

deviation is 4˚ West. The wind is from the

West producing a two-degree leeway.

What true course are you making good?198 deg True 196 deg True 192 deg True 202 deg. True


203˚ T. The variation is 19˚ East, the

magnetic compass deviation is 2˚ West and

the gyro compass error is 1˚ East. What

should be the compass course to steer per

standard magnetic compass to make the

true course good?

189 psc 183 psc 223 psc 210 psc


007˚ True. The variation is 5˚ East,

deviation is 3˚ West and the gyro compass

error is 2˚ East. A Southwest by west wind

produces a 2 degree leeway. What is the

course to steer per standard magnetic

compass to make the true course good?

003 deg psc 005 deg psc 007 deg psc 000 psc

30 Your vessel is proceeding up a channel and

you see a pair of range lights that are in line

ahead. The chart indicates that the

direction of this pair of lights is 212˚ T and

the variation is 7˚ West. If the heading of

your vessel at the time of of the sighting

208˚ per standard magnetic compass, what

is the correct deviation?

11 deg. East 11 deg. West 4 deg. East 4 deg. West



ahead. The chart indicates that the


the variation is 11˚ East. If the heading of

your vessel at the time of sighting is 009˚

per standard magnetic compass, what is

the correct deviation?

6 deg. West 6 deg. East 11 deg. East 4 deg. East



ahead. The nautical chart indicates that the


the variation is 5˚ West. IF the heading of

your vessel at the time of sighting is 344˚

per standard magnetic compass, what isthe

correct deviation?

4 deg. East 11 deg. East 6 deg. West 2 deg. West

33 While your vessel is proceeding down a

channel you notice a range of lights in line

with your vessel's mast. If your vessel is on

course 001˚ per gyro compass and the

charted value of the range lights is 359˚

True, find your gyro compass error.

2 deg. West 2 deg. East 1 deg. East 1 deg. West

34 The true course between two waypoints is

078˚ Your gyrocompass has an error of 2˚

East and you make anallowance of 3 degree

leeway for a North wind. You are at

present on auto pilot. What gyro course

should be set on your gyro pilot in order to

make good the true course?

073 pgc 077 pgc 079 pgc 075 pgc

35 The true course between two waypoints is

312˚T. Your gyrocompass has an error of 3˚

West and you make an allowance of 4

degree leeway for a west by south wind. At

present you are on auto-pilot. What gyro

course should be set on your gyro pilot to

make the true course good?

311 pgc 315 pgc 318 pgc 305 pgc

36 A true course of 041˚ between two

waypoints is plotted on the nautical chart.

At that moment the wind is blowing from

East-southeast which would require you to

make an allowance of 2˚ to compensate the

effect of the wind. Your gyro compass has

an error of 1˚W. What gyro course should

be steered to make the true course good?

044 pgc 040 pgc 042 pgc 043 pgc

37 The course line plotted on the chart

indicates that the true course between the

2 waypoints is 119 deg.T. Your gyro

compass has an error of 3 deg. East and you

have to make an allowance of 4 deg.

leeway for a south-southwest wind. What

gyro course should be steered to make the

true course good?

120 pgc 112 pgc 113 pgc 126 pgc

38 While proceeding up a channel on a course

of 010˚ per gyro compass you notice a pair

of range lights in alignment with the masts

of your vessel when viewed forward. A

check on the chart shows the range to be

009˚ T and the variation on the compass

rose to be 15˚W. If the ship's course is 026˚

psc, what is the deviation on the present

heading?

2 deg. West 2 deg. East 1 deg. West 1 deg. East

39 Your ship is entering a channel on a

magnetic course of 265˚ with two beacons

in range. The true range bearing as taken

from the chart is 264˚. If the variation in the

locality is 1˚ East, what is the deviation of

the magnetic compass?

2 deg. West 2 deg. East 1 deg. East 1 deg. West

40 What is the true bearing of the peak to be

plotted as a line of position (LOP) on the

chart when the compass bearing of the

peak is 336˚ with a variation of 1˚ East and

the deviation is 5˚ West?

332 deg.T 331 deg. T 337 deg. T 338 deg. T

41 The compass bearing of a mountain peak

was taken as 336˚. The variation is 15˚ West

and the deviation is 9˚ West. The true

bearing of the peak as plotted on the chart

is:

312 deg T 332 deg. T 311 deg. T 000 deg.T

42 What is the deviation of the compass on

heading 053˚ T when steering 044 per

steering compass to a beacon in range dead

ahead with variation in the locality of 4 deg.

W?

13 deg.East 4 deg West 2 deg West 4 deg East

43 You have just taken a satellite fix on your

ship and from there the Master traced a

new course line on the chart which is 130˚

True. The variation for the locality is 10˚

West and the deviation is 6˚ East. Find

compass error and then solve for the

compass course to steer.

C/E = 4

deg.West

Compass Co.

= 134 psc

C/E = 16 deg.

East compass

co. = 146 psc

C/E = 6 deg.

West

Compass co.=

143 psc

C/E = 4 deg.

East

Compass co. =

126 psc

44 A ship is on course 250˚ psc, deviation is 18˚

East, variation of the locality is 7˚ East. Find

the compass error and the true course.

C/E = 25 deg.

East

True co. = 275

T

C/E = 4 deg.

East

Compass co.

=134 psc

C/E = 25 deg.

East

True co. =265

T

C/E = 4 deg.

West

True co = 275

T

45 A ship is on course 241˚ psc and 251˚ pgc,

when you noticed a range in line bearing

192˚ by gyro. The chart indicates that the

range is in line on 194˚ T. The variation of

the locality is 16˚ East. What is the

deviation of the magnetic compass?

4 deg. W 4 deg. E 2 deg. W 2 deg. E


Variation for the area is 9˚ West and the

deviation is 2˚ East. The wind is from East

producing a 5˚ leeway . What is the true

course made good (TCMG)?

214 deg.T 212 deg. T 216 deg. T 311 deg. T

47 Find the compass course to steer(CCTS) on

a True course of 225˚ T. Leeway due to a

Southerly wind is 10 degrees. The Variation

on the locality is 5˚ East, deviation of the

compass is 4˚ East.

206 deg. Psc 214 deg psc 120 deg psc 225 deg. Psc

48 You are enroute to assist vessel B. Vessel B

is underway at 5 knots on course 063˚ T

and bears 136˚T at 78 miles away from you.

What is the course to steer at 13 knots to

intercept vessel B?114 deg. T 256 deg.T 303 deg. T 328 deg.T

49 You are enroute to assist vessel B. Vessel B

is underway at 4.5 knots on course 233˚ T

and bears 264˚ T at 68 miles away from

you. What is the course to steer at 13

knots to intercept vessel B?256 deg.T 249 deg T 114 deg. T 262deg.T

50 You are enroute to assist vessel A. Vessel A


and bears 248˚ T at 64 miles from you.


intercept vessel A?

262 deg.T 214 deg.T 256 deg.T 303 deg.T





intercept vessel A?






intercept vessel A?

328 deg.T 303 deg. T 256 deg.T 224 deg.T

53 The position obstained from one point

relative to another, without considering the

distance between them is called _______. Direction Fix Course Heading

54 Course is the direction of movement of the

observer while the direction of an object

from the observer is called ______. Bearing Relative Motion Range Distance

55 The direction of an object from the

observer is known as bearing while the

direction of movement of the observer is

called _____.Course Running fix Range Bearing

56 The bearing relative to the heading of a

vessel which is expressed as the angular

difference between heading and the

direction is called ______.

Relative

BearingTrue bearing Azimuth Range

57 The direction in which a vessel is steered is

called the course while the path that is

actually followed by the vessel is called the

______.

Course over

groundTrack Track line Route

58 You are course 027˚T and took a relative

bearing of a lighthouse and found to be

220˚. What is the True bearing of the

lighthouse?247 deg.T 113 deg.T 214 deg T 303 deg.T

59 You are on course 344˚ T and took a

relative bearing of a lighthouse of 270˚.

What is the True bearing of the lighthouse? 254 deg.T 247 deg.t 322 deg.T 225 deg. T

60 You are on course 277˚ T and took a

bearing of a lighthouse of 045˚ R. What is

the True bearing of the lighthouse? 322 deg.T 038 deg.T 247 deg.T 254 deg.T

61 What is the relative bearing of an object

broad on port quarter? 225 deg 195 deg 315 deg 240 deg


that is broad on starboard bow? 045 deg 030 deg 060 deg 075 deg

63 If you take a bearing of 176˚ to a

lighthouse, what other bearing of another

conspicuous object would give the best fix? 079 deg 151 deg 176 deg 292 deg



conspicuous object would give the best fix? 350 deg 079 deg 289 deg 120 deg



prominent object would give the best fix? 082 deg. 350 deg. 130 deg. 201 deg.


which is two points abaft the starboard

beam?112.5 deg. 225 deg 235 deg 315 deg


which is two points abaft the port beam? 247.5 deg 112.5 deg 235 deg 337.5 deg


located dead astern? 180 deg 270 deg. 360 deg 090 deg

69 If you take a bearing of 191˚ and 313˚ to

two prominent objects, what bearing of a

third object will provide the best fix? 069 deg 001 deg 209 deg 356 deg


two prominent objects on shore, what

bearing of a third object will provide the

best fix?201 deg 238 deg 081 deg. 234 deg

71 If you take a bearing of 313˚ and 076˚ of

two prominent objects, what bearing of a

third object will provide the best fix?014 deg. 133 deg. 255 deg. 339 deg.

72 You are taking bearings on two known

objects on shore. The best fix is ontained

when the angle between the lines of

position is:90 deg 30 deg 45 deg 60 deg



prominent object would give the best fix? 000 deg 066 deg 112 deg 271 deg



prominent object would give the best fix? 079 deg 151 deg 176 deg 292 deg



prominent object would give the best fix? 350 deg 289 deg 081 deg. 120 deg



fixed object on shore would give the best

fix?

082 deg. 013 deg 176 deg 201 deg.


two prominent objects ashore, what

bearing of a third object will provide the

best fix?

102 deg 356 deg. 144 deg 201 deg.

78 If you take a bearing of 135˚ to a prominent

object, which other bearing of another

object will NOT provide the best fix? 315 deg 045 deg 225 deg any of these


object on shore, which other bearing of

another prominent object will NOT provide

the best fix?045 deg 315 deg 135 deg any of these


object on shore, which other bearing of

another prominent object will NOT provide

the best fix?225 deg 135 deg 315 deg any of these


conspicuous object on land, which other

bearing of another object will NOT provide

the best fix?

135 deg 225 deg 045 deg any of these

82 If you take a bearing of 249˚ to a fixed

known object on shore, which other

bearing will NOT give a good fix?069 deg 159 deg 339 deg none of these


lighthouse, which other bearing of another

prominent object will NOT give a good fix? 266 deg 176 deg 356 deg. none of these



prominent object will NOT give a good fix? 356 deg 086 deg 266 deg none of these


object ashore, which bearing of another

object will NOT provide a good fix? 011 deg 101 deg 281 deg none of these



prominent object will NOT produce a good

fix?084 deg 174 deg 354 deg any of these



lighthouse will NOT produce a good fix? 322 deg 232 deg 052 deg any of these

88 If you take abearing of 259˚ to a fixed

known object on shore, which of the

following bearings of other objects will NOT

produce a good fix?079 deg 349 deg 169 deg none of these


charted object on shore, which of the

following bearing of another object will

NOT provide a good fix?

142 deg 232 deg 052 deg none of these


charted object on shore, which of the

following bearing of another object will

NOT provide a good fix?

325 deg 055 deg 235 deg any of these

91 Which of the following bearings of two

prominent objects when taken

simultaneously will provide a good fix?144 deg and

236 deg

132 deg and

312 deg

259 deg and

079deg

264 deg and

084 deg


fixed objects on shore when taken

simultaneously will provide a good fix?228 deg and

136 deg

282 deg and

102 deg

346 deg and

166 deg

276 deg and

096 deg


lighthouses when taken simultaneously will

provide a good fix?184 deg and

275 deg

311 deg and

131 deg

196 deg and

017 deg

163 deg and

343 deg


fixed and charted objects will provide a

good fix when taken at nearly the same

time?

119 deg and

207 deg

144 deg and

325 deg

025 deg and

029 deg

228 deg and

236 deg


fixed and charted objects will provide a

good fix when taken at nearly the same

time?

131 deg and

040 deg

131 deg and

311 deg

214 deg and

034 deg

194 deg and

014 deg


fixed and charted objects will give a good

crossing angle between 2 LOPs if taken at

nearly the same time?

136 deg and

228 deg

102 deg and

282 deg

166 deg and

346 deg

096 deg and

276 deg





275 deg and

184 deg

131 deg and

311 deg

017 deg and

196 deg

343 deg and

163 deg





207 deg and

119 deg

325 deg and

144 deg

029 deg and

025 deg

232 deg and

229 deg





040 deg and

131 deg

312 deg and

309 deg

211 deg and

214 deg

189 deg and

191 deg





128 deg and

218 deg

132 deg and

312 deg

128 deg and

132 deg

167 deg and

173 deg





345 deg and

280 deg

236 deg and

226 deg

247 deg and

252 deg

123 deg and

303 deg





209 deg and

285 deg

116 deg and

109 deg

254 deg and

260 deg

136 deg and

317 deg





023 deg and

102 deg

128 deg and

152 deg

144 deg and

119 deg

279 deg and

256 deg





120 deg and

042 deg

153 deg and

333 deg

321 deg and

341 deg

176 deg and

167 deg





005 deg and

056 deg

105 deg and

118 deg

134 deg and

314 deg

320 deg and

136 deg





313 deg and

076 deg

133 deg and

113 deg

076 deg and

097 deg

121 deg and

303 deg





142 deg and

259 deg

321 deg and

144 deg

249 deg and

067 deg

167 deg and

177 deg





169 deg and

048 deg

120 deg and

312 deg

313 deg and

136 deg

005 deg and

016 deg

109 A vessel is following a range to keep herself

within a narrow channel. The chart

indicates the range to be 321˚. The vessel is

"on range" when she is steering a course of

______.

321 deg.T 321 deg psc 141 deg T 000 deg.T





______.

108 deg.T 180 deg.T 321 deg.T 108 deg psc





______.

243 deg.T 270 deg. T 234 deg.T 063 deg T





______.

041 deg.T 090 deg.T 041 deg psc 140 deg.T





______.






______.






______.






______.

256 deg.T 265 deg.T 000 deg.T 256 deg psc

117 Your vessel is making way through the

water at a speed of 12 knots. Your vessel

traveled 30 nautical miles in 2 hours 20

minutes. What current are you

experiencing?

A following

current of 0.9

knot

A following

current at 2

knots

A head

current at 2.0

knots

A head

current of 0.9

knot





experiencing?

A following

current of 1.3

knots

A following

current at 2

knots

A head

current at 2.0

knots

A head

current of 0.9

knot

119 Course is the direction of movement of the

observer while the direction of a current

from the observer is called ______. set bearing drift slack





experiencing?

slack

A following

current of 0.9

knots

A head

current of 0.9

knots

A following

current of 1.3

knots





experiencing?

A following

current of 2.0

knots

A following

current of 0.9

knots

A following

current of 0.5

knots

A head

current of 0.9

knot





experiencing?

A head

current of 1.5

knots

A following

current of 1.5

knots

A following

current of 2

knots

A head

current of 2

knots





experiencing?

A following

current of 2.2

knots

A following

current of 1.3

knots

A head

current of 2.2

knots

A head

current of 1.5

knots





experiencing?

A head

current of 0.5

knot

A head

current of 1.5

knots

A following

current of 1.5

knots

A following

current of 2.5

knots





experiencing?

A following

current of 2

knots

A head

current of 2.5

knots

A following

current of 1.5

knots

A head

current of 0.5

knot





experiencing?

current is slack

A head

current of 1.5

knots

A following

current of 2.2

knots

A head

current of 0.5

knot

127 At 0000H you fix your position and change

course to 090˚T At 0030H, you again fix

your position, and it is 0.5 miles east of

your DR position. Which statement is true?The current is

easterly

The drift is 0.5

knot

You should

alter course to

the right to

regain the

track line

The current is

perpendicular

to your

trackline




your DR position. Which statement is true?

The set is 090,

drift 1.0 knot

The set is 090,

drift 0.5 knot

The set is 270,

drift 0.5 knot

The set is 270,

drift 1.0 knot

129 At 0000H you fix your position and plot a

new DR trackline. At 0200H, you again fix

your position, and it is 0.5 miles west of

your DR position. Which statement is true?The set is 270,

drift 0.25 knot

The set is 090,

drift 0.5 knot

The set is 270,

drift 0.5 knot

The set is 270,

drift 1.0 knot

130 At 0000H you fix your position and plot a

new DR trackline. At 0200H, you again fix


your DR position. Which statement is true? The drift is

0.25 knot

The current is

westerly at

0.25 knot

You must

increase

speed to

compensate

for the

current

The current

cannot be

determined


course to 090˚ T At 0030H, you again fix



westerlyThe is 0.5 knot

You should

alter course to

the right to

regain the

trackline

The current is

perpendicular

to your

trackline


course to 000˚ T At 1230H, you again fix



easterly

The current is

westerly

The current is

Northerly

The current is

southerly





westerly

The current is

easterly

The current is

northerly

The current is

southerly



your position, and it is 1.5 miles north of


northerly

The current is

southerly

The current is

easterly

The current is

westerly



your position, and it is 0.5 miles south of


The current is

southerly

The current is

northerly

The current is

easterly

The current is

westerly



your position, and it is 0.5 miles southwest

of your DR position. Which statement is

true?

The current

set is 225 deg.

The drift is 0.5

knot

A head

current

affects the

vessel

The current is

135 deg.



your position, and it is 0.5 miles northwest


true?

The current

set is 315 deg.

The current

set is 225 deg.

The current

set is 045 deg.

The drift is 0.5

knot



your position, and it is 0.5 mile southeast of

your DR position. Which statement is true?The current

set is 135 deg.

The current

set is 225 deg.

The current

set is 045 deg

The drift is

0.25 knot



your position, and it is 0.5 mile southeast of


Dirft = 1.0

knot;

Current Set =

135 deg.T

Drift = 0.5

knot;

Current Set

=225 deg.T

Drift = 1.0

knot

Current Set =

315 deg.T

Drift = 0.5

knot

Current Set =

135 deg.T



your position, and it is 0.9 mile southwest


true?

Drift = 2.1

knots;

Current Set =

225 deg.T

Drift = 1.0

knot

Current Set =

135 deg.T

Drift = 1.0

knot

Current Set =

315 deg.T

Drift = 2.1

knots

Current set =

045 deg.T


course to 225˚ At 0315H, you again fix your

position, and it is 0.5 miles northwest of


Drift = 2

knots;

Current Set =

315 deg.T

Drift = 1 knot;

Current Set =

135 deg.T

Drift = 2

knots;

Current Set =

135 deg.T

Drift = 1.0

knot

Current Set =

225 deg.T



your position, and it is 1.0 mile northeast of


Drift = 1.2

knots;

Current Set

=045 deg. T

Drift = 2.1

knots;

Current Set =

135 deg.T

Drift = 1.2

knots;

Current Set =

315 deg.T

Drift = 2.1

knots

Current set =

045 deg.T

143 A vessel is to proceed at 12 knots on a

course of 211˚T through a current

estimated to be setting at 255˚T and a drift

of 3 knots. Find Course To Steer (CTS) and

the speed of advance (SOA).

CTS = 199

deg.T;

SOA = 10

knots

CTS = 205

deg.T

SOA = 13

knots

CTS = 203

deg.T;

SOA = 11

knots

CTS = 203

deg.T;

SOA = 11

knots

144 You desire to make good a course of 062˚T

to a destination 4.7 miles away. Your

speed is 3 knots. The Tidal Current Table

lists a set of 120˚T and a drift of 1 knot for

the time period you will be making the

passage. Find your course to steer (CTS) an

CTS = 046

deg.T;

SOA = 3.3 3.3

knots

CTS = 048

deg.T;

SOA = 4.0

knots

CTS =040

deg.T;

SOA = 2.5

knots

CTS = 047

deg.T

SOA = 4.5

knots

145 The anchorage is located 20 nautical miles

North of a vessel with a speed of 15 knots.

A current is known to set 3 knots Easterly.

Calculate the course to steer in order to

drop her anchor to the charted anchorage

on the spot.

349 deg. 359 deg. 340 deg. 009 deg.

146 You are underway on course 180˚T at 22

knots. The apparent wind is from 70 deg.

off the port bow, speed 20 knots. What is

the true direction and speed of the true

wind?

051 deg.T;

24.1 knots

058 deg.T; 22

knots

027 deg.T; 21

knots

048 deg.T; 36

knots

147 You are underway on course 270˚T at 10

knots. The apparent wind is from 10 deg.

off the port bow, speed 30 knots. What is

the true direction and speed of the true

wind?

225 deg.T; 20

knots

051 deg.T; 24

knots

270 deg.T; 11

knots

357 deg.T; 13

knots

148 Your ship is on course 195˚T at 15 knots.

The apparent wind is from 40 deg. on the

port bow, speed 30 knots. The direction

and speed of the true wind are:

027 deg.T; 21

knots

153 deg.T; 25

knots

051 deg.T; 24

knots

225 deg.T; 20

knots

149 Your ship is proceeding on course 150˚T at

a speed of 17 knots. The apparent wind is

from 40 deg on your starboard bow, speed

15 knots. Calculate the True wind direction

and speed.

270 deg.T; 11

knots

225 deg. T;

11 knots

153 deg.T; 24

knots

051 deg. T; 24

knots

150 Your vessel's course is 150˚T at 17 knots.

The apparent wind is from 40 deg. off the

starboard bow, speed 15 knots. What is

the speed of the true wind?11 knots 13 knots 8 knots 15 knots

151 When a body has crossed the observer's

meridian, this is called: any of thesemeridian

passageculmination

meridian

transit

152 During meridian passage, the LHA and

meridian angle of the body is zero. What is

its altitude?maximum

altitude

minimum

altitudeabout 90 deg.

equal to your

latitude

153 To a certain observer, a meridian transit

can be at: I. upper transit only II. Lower

transit only both I and II neither I nor II I only II only

154 A body will be observed at lower transit

only :if the body is

circumpolar

during

datlight hours

during

summer time

none of the

above

155 At lower transit, the body's altitude is at its

minimum bearing North or South. What

will be the LHA?180 deg. 090 deg.T 270 deg. 060 deg.T

156 The azimuth of the celestial body during

meridian passage will be: I. North

II.Southeither I or II neither I nor II I only II only

157 If the observer is at 5˚ South and the sun's

declination is 10˚ North, what will be the

bearing of the body during meridian

passage?

..............Sun 10° N ^ The Sun is North

................ ^ of the Observer,

...............Obs 5° S ^ therefore, the

...................................... bearing of the

................................... ...body is NORTH.

NOTE: In answering this kind of question, you have to plot the Position of the "OBSERVER" and the Position of the "SUN". ............If the "SUN" is North or above the

"OBSERVER", the bearing is NORTH or 000°T.

...........If the "SUN" is South or below the

"OBSERVER", the bearing is SOUTH or 180°T.

North South 15 deg. South 5 deg. North

158 If the observer is at 5˚ South and the sun's



passage?000 deg.t 180 deg.t 15 deg. South 10 deg. North

159 If the observer is at 5˚ North and the sun's

declination is 10˚ South, what will be the


passage?South North 15 deg. North 20 deg. South




passage?180 deg.T 000 deg.T 10 deg. South 5 deg. South




passage?

North South 15 deg. North 5 deg. south




passage?

South North 15 deg. North 15 deg. South




passage?

180 deg.T 000 deg.T 5 deg. North 5 deg. South




passage?

000 deg.T 180 deg.T 5 deg. South 15 deg. North




passage?North South 5 deg.South 25 deg. North

166 If the observer is at 10˚ North, and the sun

is at summer solstice, what will be the


passage?North South 23 deg. 27' S 23 deg. 27' N

167 If the observer is at 40˚North, and the sun



passage?South North

23 deg. 27'

North

23 deg. 27'

South




passage?000 deg.T 180 deg.T 23 deg. 27' N 23 deg. 27' S




passage?180 deg.T 000 deg.T 23 deg. 27'S 23 deg 27'N

170 If the observer is at 10˚ South, and the sun



passage?North South

23 deg. 27'

North

23 deg. 27'

South




passage?

000 deg.T 180 deg.T 23 deg. 27' N 23 deg. 27' S


is at winter solstice, what will be the


passage?South North

23 deg. 27'

South

23 deg. 27'

North




passage?180 deg.T 000 deg.T 23 deg. 27' N 23 deg. 27' S




passage?

North South23 deg. 27'

North

23 deg. 27'

South




passage?000 deg.T 180 deg.T

23 deg. 27'

South

23 deg.27'

North

176 Find the latitude of the observer if the sun's

altitude at upper transit is 75˚ bearing

North and the declination is 10 deg North. 5 deg. S 25 deg. S 5 deg. North 25 deg S



South and the declination is 5˚ South. 35 deg. N 45 deg. N 45 deg. S 35 deg. S



South and the declination is 10˚ South. 30 deg. N 35 deg. N 30 deg. S 35 deg. S


altitude at lower transit is 10˚ bearing

South and the declination is 70˚ South. 30 deg. S 30 deg. N 35 deg. N 35 deg. S

180 At meridian passage, upper transit, Ho of

the sun is 39˚19.3', bearing North.

Declination of the sun is 23˚38.2' South.

Find latitude at transit(U.T.) ........

.. Ho = 39° 19.3' N…………………….. ... .

. (-) 90° ( always - 90 )

MZD = 50° 40.7' S same sign + …

Dec = 23° 38.2' S (+) diff sign -

Lat = 74° 18.9' S .................. ......................................................................... .NOTE: If the sign of Ho is "North", then the

sign of MZD will be "South" . If Ho is "South",

MZD will be "North".(Always reverse the sign)

74˚18.9' S 27˚02.5' S 27˚02.5'N 74˚18.9'N


the sun is 48˚11.6', bearing South.

Declination of the sun is 1˚46.3' North.

Find latitude at transit.43˚34.7' N 40˚02.1'N 43˚34.7 S 40˚02.1 S


the sun is 76˚46.5', bearing North.

Declination of the sun is 20˚10.5' North.

Find latitude at transit.9˚57.0' N 9˚57.0' S 43˚34.7' N 74˚18.9' S

183 The Observed altitude (Ho) of Star Kochab

at meridian passage, lower transit is

16˚11.5'. The star's declination is 74˚16.2'

North. Find latitude by meridian passage

lower transit(L.T.).

…………………………………………………… Dec = 74° 16.2' N

.. ( - ) 90° ....................... ....

.PX = 15° 43.8' ........... . . ... Ho = 16° 11.5' ( always + ) .... .... .. Lat = 31° 55.3' N (same name as Dec)

NOTE: This is applicable only if the celestial

body is a circumpolar body.

31˚55.3' N 58˚04.7' N 31˚22.3' S 00˚27.7' N

184 The Observed altitude (Ho) of Star Deneb at

meridian passage, lower transit is 15˚23.5'.

The star's declination is 45˚16.6' North.

Find latitude.60˚06.9' N 43˚34.7' N 9˚57.0' N 74˚18.9' S

185 On April 22, in longitude 098˚East, the

observed altitude (Ho) of the Sun's U.L. at

meridian passage was 54˚42.2' bearing

North, declination is 11˚42.1' N. Calculate

the observer's latitude.

23˚35.7' S 43˚34.7' N 46˚59.9' N 22˚35.7' N

186 On Jan. 16, in longitude 132˚54'W, the

observed altitude (Ho) of the Sun's L.L. at

meridian passage was 64˚04.2' bearing

North, declination is 21˚58.5'S. Calculate

the observer's latitude.

47˚54.3' S 03˚57.3' S 46˚59.9' N 58˚04.7' N

187 The observed meridian altitude (Ho) fo the

star Sirius (lower transit) was 14˚03.9'

bearing South. Find the observer's latitude

if the declination is 16˚43' S87˚20.9' S 74˚18.9' S 58˚04.7' S 59˚13.1' S

188 At meridian passage, upper transit, the

observer's latitude was found to be

43˚34.7' North, Declination is 1˚46.3' North.

Find the Observed Altitude (Ho)48˚11.6' S 48˚11.6' N 41˚48.4' S 41˚48.4 N

189 At meridian passage, upper transit, the

observer's latitude was found to be 9˚57'

North, Declination is 20˚10.5' North. Find

the Observed Altitude (Ho)79˚4.5' N 79˚4.5' N 47˚54.3' S 74˚18.9' N

190 The Meridian Altitudes of a celestial body

are 12˚ and 68˚, North and South

respectively from the navigator. Calculate

the latitude.62˚ N 40˚ N 46˚43' N 46˚S




declination of the celestial body.40˚ N 62˚ N 46˚43' N 46˚S




the true altitude of the celestial body when

it crosses the prime vertical.46˚43' N 62˚ N 40˚ N 40˚ S

193 What is the latitude of a place where the

sun is exactly at the zenith of the observer

at Local Apparent Noon (LAN) of June 21? 23˚27' N 23˚27' S 0 deg. 90 deg.



at Local Apparent Noon (LAN) of December

22?23˚27' S 23˚27' N at the equator

Tropic of

Cancer



at Local Apparent Noon (LAN) of March 21? at the

equatorNorth Pole 23˚27' S 23˚27' N



at Local Apparent Noon (LAN) of September

22 or 23?

0 deg.

LatitudeSouth Pole 23˚27' S 23˚27' N

197 On June 10 in Longitude 058˚42'E, the

sextant meridian altitude (Hs) of the sun's

U.L. was 87˚32.0' bearing South, I.E. 1.3' on

the arc. DIP correction is 4.8', Main corr. Is

15.9'. Calculate the latitude of the observer

if the sun's declination from the almanac

indicates 23˚17.4' North.

26˚07.4' N 42˚10' S 47˚50' N 47˚50' S

198 The observed meridian altitude (Ho) fo the

star Sirius (lower transit) was 14˚03.9'

bearing South. Find the observer's latitude

if the declination is 16˚43' South. 87˚20.9' S 26˚07.4' N 23˚27' N 23˚27' S

199 On Jan. 20, at GMT 22h 53m 40s, in

longitude 041˚26'W, the observed altitude

(Ho) of the star Polaris was 35˚54.9' . The

correction values determined by Polaris

tables are Ao = 0˚ 53.2', A1 = 0.4' A2 =

0.7'. Calculate the observer's latitude.

35˚49.2' N 35˚49.2' S 35˚54.9' N 35˚54.9' N

200 On Sept. 12, at GMT 10h35m 00s LZT in

longitude 057˚ 58' W, the Ho of star Polaris

was 35˚50'. The correction values from the

Polaris Tables: Ao = 1˚22.1', A1 = 0.4', A2

=0.9' Find the latitude of the observer.36˚13.4' N 35˚13.4' N 37˚13.4' N 36˚13.4' S

201 Find the latitude of the observer if the true

altitude of Polaris is 34˚17.6'. The

correction values from the Polaris Tables:

Ao = 0˚58.5', A1 = 0.6', A2 = 0.9' 34˚17.6' N 36˚13.4' N 35˚13.4' N 35˚49.2' N

202 The mean radius of the Earth is 3440

nautical miles, find the radius of the

parallel of Latitude of Manila (Lat. 14˚30' N

approximately)3330.4 nm 3338.6 nm 3330.9 nm 3430.2 nm

203 The Earth is not a true sphere so that the

equatorial radius is larger than the polar

radius. The difference is _____. 13.5 miles 13,000 miles 130 miles 1300 miles

204 Given equatorial radius of the Earth as 3444

nm, find radius of a parallel of latitude at

70˚N or S 1177.9 nm 1181.4 nm 1176.1 nm 1182.3 nm

205 With an equatorial radius of the Earth of

3444nm find circumference of a parallel of

latitude 30˚N18740.2 nm 18730.2 nm 21,673.4 nm 21,630.3 nm

206 At what rate per hour is the Royal

observatory at Greenwich (Latitude

51˚28.5' N) being carried around the Earth's

axis?560.6 knots 450.8 knots 562.4 knots 520.3 knots

207 At what rate per hour is the Latitude 23˚20'

N being carried around the Earth's axis?826.4 knots 560.6 knots 234.0 knots 320.8 knots

208 At what rate per hour is latitude 60˚00' S

being carried around the Earth's axis? 450 nm/hr 826.4 nm/hr 590.6 nm/hr 540 nm/hr

209 At what rate per hour is latitude 45 deg.

North being carried around the Earth's

axis? 636.4 nm/hr 450 nm/hr 560.6 nm/hr 600 nm/hr

210 At what rate per hour is latitude 36˚38'

South being carried around the Earth's

axis?722.22 nm/hr 721.11 nm/hr 720.8 nm/hr 678.8 nm/hr

211 With a given mean radius of the Earth as

3440 nm, calculate the radius of a parallel

of latitude at 46˚24' North. 2372.3 nm 2375.5 nm 3272.3 nm 2368.9 nm

212 Assuming the equatorial radius of the Earth

as 3444 nm, find te circumference of the

equator?21639.3 nm 21640.9 nm 21630.3 nm 21,600 nm

213 The distance between two meridians is 427

nautical miles in Latitude 50˚20' N. What is

the angle at the pole?11˚08.9' 11˚56.9' 11˚38.9' 10˚45'



the angle at the pole? 22˚16.9' 9˚12.6' 2˚44.5' 12˚54.6'











nautical miles in Latitude 45˚20' N. Find the

Difference of Longitude (Dlo) between the

2 meridians.22˚16.9' 22˚16.9' 9˚12.6' 12˚54.6'

219 In what latitude will a departure of 300 nm

corresponds to a Dlo of 6˚40'? 41˚24.6' N or

S

39˚34.6' N or

S

51˚14.6' N or

S

23˚24.6' N or

S


corresponds to a Dlo of 6˚40'? 51˚19.1' Nor S41˚24.6' N or

S12˚54.6'

38˚37.5' N or

S


corresponds to a Dlo of 4˚16' ? 38˚37.5' N or

S51˚19.1' Nor S

41˚24.6' N or

S12˚54.6'

222 On a certain parallel, the distance between

two meridians is 250 nm while the Dlo

between the meridians is 12˚30'. What is

the latitude?

70˚31.9' N or

S

41˚24.6' N or

S51˚19.1' Nor S

38˚37.5' N or

S

223 On a certain parallel, the distance between

two meridians is 340 nm while the Dlo

between the meridians is 18˚30'. What is

the latitude?

72˚09.8' N or

S

70˚31.9' N or

S51˚19.1' Nor S

41˚24.6' N or

S

224 In Latitude 50˚10' N, the departure

between two meridians is 360 nautical

miles. What is the Difference of Longitude? 9˚22' 10˚11.7' 11˚15.6' 2˚19'



miles. What is the Difference of Longitude? 10˚11.7' 20˚22.8' 22˚16.9' 12˚54.6'



miles. What is the Difference of Longitude? 2˚19' 22˚16.9' 10˚11.7' 3˚15'



miles. What is the Difference of Longitude? 11˚15.6' 12˚54.6' 20˚22.8' 2˚19'

228 A ship steams on a course of 090˚T from

port A in latitude 23˚30' N; Long. 059˚10'E

to Port B in Latitude 23˚30' N; Longitude

065˚30'E. How far did she steam? 348.5 nm 358.5 nm 368.3 nm 329.5 nm

229 A ship steams on a course of 270˚T from

port A in latitude 23˚30' N; Long. 059˚10'E

to Port B in Latitude 23˚30' N; Longitude

065˚30'E. How far did she steam?348.5 nm 358.5 nm 368.3 nm 329.5 nm

230 In Latitude 50˚20'N, a vesse steams from

Long. 015˚46'W to Long. 031˚18'W. What

distance was made good?594.9 nm 348.5 nm 358.5 nm 329.4 nm

231 On a certain parallel, the distance

betweeen two meridians is 150 nm. On the

equator the distance between the same

two meridians is 235 nautical miles. What

is the latitude of the parallel?

50˚20.1' N or

S

50˚08.1' N or

S

41˚24.6' N or

S

70˚31.9' N or

S






31˚40.3. N or

S

50˚20.1' N or

S

40˚44.9' N or

S

41˚24.6' N or

S






40˚44.9' N or

S

44˚40.9' N or

S

31˚40.3. N or

S

50˚08.1' N or

S




two meridians is 30 nautical miles. What is

the latitude of the parallel?

33˚33' N or S 30˚25' N or S40˚44.9' N or

S

31˚40.3. N or

S






70˚31.7' N or

S

72˚09.8' N or

S

71˚31.9' N or

S

50˚20.1' N or

S





is the latitude of the parallel?66˚48' N or S 66˚28' N or S

66˚36.8' N or

S

66˚58 .9' N or

S






60˚00' N or S 66˚48' N or S 30˚00' N or S40˚44.9' N or

S


betweeen two meridians is 40.8 nm. On

the equator the distance between the same

two meridians is 81.6 nautical miles. What

is the latitude of the parallel?60˚00' N or S 33˚33' N or S 30˚00' N or S 66˚48' N or S






75˚31.3' N or

S

70˚31.7' N or

S

71˚31.9' N or

S

72˚09.8' N or

S





is the latitude of the parallel?64˚37.4' 66˚48' N or S

66˚36.8' N or

S

64˚58 .9' N or

S


betweeen two meridians is 2350 nm. On



is the latitude of the parallel?61˚05' N or S 60˚00' N or S 66˚48' N or S 64˚37.4'


betweeen two meridians is 2123 nm. On




74˚51.8' N or

S

75˚31.3' N or

S

71˚31.9' N or

S

72˚09.8' N or

S






47˚49.3' N or

s

47˚48.6' N or

S

47˚59.9' N or

S

47˚36.9' N or

S






61˚55.6' N or

S61˚05' N or S 64˚37.4'

61˚45.6' N or

S





is the latitude of the parallel?69˚00' N or S 60˚00' N or S 61˚05' N or S 71˚00' N or S

246 A vessel steers a course of 146˚T from Lat.

35˚10'N to Lat. 8˚46' N. How far did she

steam?1910.7 nm 1930.7 nm 1907.1 nm 1850.4 nm

247 A vessel sails from Lat.21˚45'N;

Long.023˚56' W on course 146˚ T for a

distance of 300 nm. Find the Latitude and

Longitude of Arrival by mercator Sailing.

Lat.17˚36.3' N;

Long.

026˚53.1'W

Lat. 17˚30.3'

N;

Long.

025˚53.1'W

Lat. 18˚36.3'

N;

Long.

028˚53.1'W

Lat. 26˚53.1'

N;

Long.

017˚36.1'W

248 Find the DLAT and Depature made good if a

vessel steams for 1936 nautical miles on

course 248˚ TDlat 725.2' S;

Dep. 1795.1'

Dlat 725.2' S;

Dep. 1688.1'

Dlat 725.2' N;

Dep 1795.1'

Dlat 725.1' N;

Dep. 1695.1'



course 026˚ TDlat 391.0' N;

Dep. 190.7'

Dlat 725.2' S;

Dep. 1688.1'

Dlat 391.0' N;

Dep. 180.7'

Dlat 279.3' S;

Dep 195.6'



course 215˚ TDlat 279.3' S;

Dep 195.6'

Dlat 297.3' S;

Dep 195.6'

Dlat 279.3' N;

Dep 195.6'

Dlat 289.3' S;

Dep 159.6'

251 A vessel makes a Dlat of 289.4' N and a

departure of 203.2 nautical miles. Find the

course and distance.

Course

324˚55.5';

Dist. 353.6'

Course

324˚55.5';

Dist.300.0'

Course

324˚55.5';

Dist.380.1'

Course

314˚55.5';

Dist.323.6'

252 In latitude 50˚20' N, a vessel steams 270˚T

from Long. 015˚ 46' W to Long. 031˚18' W.

Find the distance made good. 594.9 nm 554.5 nm 600 nm 348.5 nm

253 A vessel steams 470 nautical miles along

the parallel of "x" North from Long.015˚35'

W to Long. 027˚20' W. What is the latitude

of "x" ?

Lat. 48˚ 11.3'

North

Lat. 49˚ 11.3'

North

Lat. 88˚ 11.3'

North

Lat. 58˚ 11.3'

North

254 From Latitude 39˚00'N; 033˚10'W, a ship

steams on course 270˚T at 10 knots for 3

days and 8 hours. Find arrival position.Lat. 39˚00' N;

Long. 050˚

19.4' W

Lat. 38˚00' N;

Long. 050˚

19.4' W

Lat. 40˚00' N;

Long. 048˚

19.4' W

Lat. 42˚00' N;

Long. 050˚

19.4' W

255 Two ports A and B are in the Northern

Hemisphere. On the parallel of Port A, the

distance between their meridians is 250

nm. On the parallel of Port B it is 350 nm

and on the equator it is 400 nm. What are

the Latitudes of the ports?

Lat 51˚19.1' N

for Port A Lat

28˚57.3' N for

Port B

Lat 50˚19.1' N

for Port A Lat

26˚57.3' N for

Port B

Lat 53˚20.1' N

for Port A Lat

28˚55.3' N for

Port B

Lat 50˚19.1' N

for Port A Lat

28˚57.3' N for

Port B

256 A ship steams 090˚T for 200 nautical miles

in Lat. 49˚10' N. By how much will her

clocks have to be advanced? 20m 23s 19m 06s 21m 44s 24m00s

257 Your vessel receivesa distress call from a

vessel reporting her position as LAT 35˚01'

S; LONG. 018˚51' W. Your position is LAT

35˚01' S; LONG.021˚42' W. Determine what

will be your True Course and distance to

the vessel in distress by parallel sailing

method.

090˚T, 140 nm 090˚T, 188 nm 270˚T, 140 nm 270˚T, 188 nm

258 A vessel in Latitude 55˚12' N sails on course

270˚T and made a Dlo of 21˚36.6'. If the

time taken was 3 days 2 hours, find the

vessel's speed.10 knots 11 knots 12 knots 9 knots

259 On a certain parallel, a vessel must steam

one nautical mile to alter her longitude by 2

minutes. What is the latitude of the

parallel?Lat. 60˚ N or S Lat. 66˚ N or S Lat. 56˚ N or S Lat. 45˚ N or S

260 A ship "A" is on the equator steering 090˚T

at 16 knots; while a ship "B" is on a parallel

of North latitude, steering 270˚T at 12

knots. When "A" makes a Dlo of 1', "B"

makes a Dlo of 48'. Calculate the latitude

of "B".

Lat 20˚ 22' Lat 21˚ 22' Lat 23 22' Lat 22˚ 22'

261 A ship in Latitude 59˚40' sailed on a certain

course until the D.M.P. was twice the DLat.

Calculate the Latitude reached. Lat. 60˚ 20' N

or S

Lat. 65˚ 20' N

or S

Lat. 69˚ 00' N

or S Lat 20˚ 22'

262 By sailing due East for a distance of 245

nautical miles, a ship alters her longitude

by 7˚25'. Find Latitude of the ship.Lat. 56˚ 36' N

or S

Lat. 60˚ 20' N

or S

Lat 20˚ 22' N

or S

Lat. 65˚ 20' N

or S

263 Find the distance between initial position at

Lat1. 50˚0' N; 178˚0' W and Lat2. 50˚00' N;

Long. 179˚ 00'E. 116 nm 190 nm 216 nm 230 nm

264 Your ship departs Yokohama, Japan from

position Lat. 35˚27' N; Long. 139˚39' E

bound for San Francisco, California,USA. At

position Lat. 37˚48.5' N, Long. 122˚24' W.

Determine the course and distance by

Mercator sailing only.

088.3˚T; dist.

4738.4 miles

112˚T; dist.

4538.5 miles

095.3˚T; dist

4736 miles

278.3˚T;dist.

3478.4 miles





Determine the distance by Great Circle

sailing.

4473 miles 4458 miles 4738 miles 4567 miles





Determine the initial course by Great Circle

sailing.

054.3˚T 088.3˚T 095˚T 112.5˚T





Determine the Latitude of the Vertex (Lv)

by Great Circle sailing.

Lv = 48˚35.9'

N

Lv = 46˚35.9'

N

Lv = 58˚36.9'

N

Lv = 25˚46.9'

N





Determine the Longitude of the Vertex (Lv)

by Great Circle sailing.

Longv =

169˚14' W

Longv =

169˚14' E

Longv =

159˚24' W

Longv =

159˚14' E

269 Determine the great circle distance and

intial course from Lat. 27˚51' N; Long.

071˚41' W to Lat. 49˚ 45' N; Long. 006˚14'

W ?

3214 nm,

046.9˚T

3557 nm;

112˚T

3593 nm;

148.1˚T

3196 nm;

313˚T


intial course from Lat. 36˚00' S; Long.

056˚00' W to Lat. 34˚ 00' N; Long. 018˚15' E

?

3557 nm;

112˚T

3214 nm,

046.9˚T

3196 nm;

313˚T

3593 nm;

148.1˚T


intial course from Lat. 24˚52' N; Long.

078˚27' W to Lat. 47˚ 19' N; Long. 006˚ 42'

W ?

3593 nm;

048.1˚T

3214 nm,

046.9˚T

3557 nm;

112˚T

3196 nm;

313˚T

272 The great circle distance from Lat. 35˚57.2'

N, Long. 005˚45.7' W to Lat. 24˚25.3' N;

Long 083˚02.6' W is 3966.5 nautical miles

and the initial course is 283.7˚T. The

latitude of the vertex is 38˚09.4' N. What is

the longitude of the vertex?

028˚ 18.5' W 028˚ 12.5' W 028˚ 38.5' W 028˚ 47.7' W

273 The great circle distance from Lat. 08˚50' N,

Long. 080˚21' W to Lat. 12˚36' N; Long

128˚16' E is 8664 nautical miles and the

initial course is 306.6˚T. The latitude of the

vertex is 37˚39.6' N. What is the longitude

of the vertex?

157˚44' W 157˚44' E 159˚32' W 167˚ 24' W

274 You are on a great circle track departing

from LAT. 25˚50' N; LONG. 077˚00' W and

your initial course is 061.7˚T. The position

of the vertex is LAT 37˚35.6' N; LONG.

025˚57.8' W. What is the distance along

the great circle track between the point of

dep

2664.9 nm 3557 nm 3214 nm 8664 nm

275 The great circle distance from Lat. 35˚08' S,

Long. 019˚26' E to Lat. 33˚16' S; Long

115˚36' E is 4559 nautical miles and the

initial course is 121˚T. Determine the

latitude of the vertex?

45˚30' S 44˚29' S 46˚35.9' N 43˚41' S

276 The latitude and longitude of the vertex

along your great circle course is 38˚15'S,

168˚19'W. Your vessel is on course 102˚T.

Which of the following is your course when

crossing the equator?

051.8˚T 088.4˚T 054.3˚T 161˚T



168˚19'E. Your vessel is on course 060˚T.

Which of the following is your longitude

when crossing the equator?

101˚21' W 101˚21' E 078˚39' W 078˚39' E



039˚18' E. Your vessel is on course 246˚T.

Which of the following is your course when

crossing the equator?

313.5˚ T 306.3˚ 226.5˚ T 230.7˚ T

279 A great circle crosses the equator at 134˚ E.

It will also cross the equator at what other

longitude?046˚ W 124˚ W 134˚ W 161˚ W



longitude?066˚ W 046˚ W 114˚ W 046˚ E

281 A great circle crosses the equator at 114˚

W. It will also cross the equator at what

other longitude?066˚ E 114˚ E 124˚ W 134 E



longitude?094˚ W 046˚ W 086˚ W 161˚ W



other longitude? 023˚ E 157˚ E 023˚ W 066˚ E



other longitude?131˚ E 131˚ W 049˚ E 094˚ W



longitude? 078˚ W 078˚ E 102˚ W 023˚ E


35' E. It will also cross the equator at what

other longitude? 167˚ 25' W 167˚ 25' E 67˚ 25' W 012˚ 36' E


35' W. It will also cross the equator at what

other longitude?147˚25' E 147˚25' W 157˚25' W 032˚35' E


45' E. It will also cross the equator at what

other longitude? 101˚15' W 101˚15' E 11˚15' W 078˚45' W



longitude?060˚ W 120˚ W 060˚ E 078˚ W



other longitude? 060˚ E 060˚ W 078˚ W 120˚ E

291 The longitude of the upper vertex of a great

circle track is 169˚ E. What is the longitude

of the lower vertex? 011˚ W 011˚ E 169˚ W 076˚ E


circle track is 011˚ W. What is the longitude

of the lower vertex? 169˚ E 169˚ W 011˚ E 060˚ W


circle track is 134˚ E. What is the longitude

of the lower vertex?046˚ W 134˚ W 046˚ E 169˚ E

294 The latitude of the upper vertex of a great

circle is 36˚ N. What is the latitude of the

lower vertex?36˚ S 36˚N 63˚ N 54˚ N



lower vertex? 63˚S 36˚ S 36˚N 27˚N



lower vertex?27˚S 63˚S 63˚N 36˚ S


circle is 54˚ S. What is the latitude of the

lower vertex? 54˚N 36˚ N 45˚N 36˚ S



lower vertex?46˚N 34˚N 63˚S 27˚S



lower vertex? 30˚N 60˚N 27˚S 63˚S

300 What is the difference of longitude

between the intersection of the great circle

and the equator to the lower vertex? 90 deg. 120 deg. 180 deg.T 45 deg.

301 What is the difference of longitude

between the intersection of the great circle

and the equator to the upper vertex? 90 deg. 145 deg. 180 deg.T 34 deg.

302 The vertex of a great circle track in Long.

109˚ E. An eastbound vessel will cross the

equator in what longitude? 161˚ W 161˚ E 19˚ E 19˚ W

303 The vertex of a great circle track is Long.


equator in what longitude?149˚ W 149˚ E 59˚ W 59˚ E



equator in what longitude? 136˚W 44˚W 44˚E 146˚W



equator in what longitude? 119˚ E 119˚ W 061˚ E 061˚ W



equator in what longitude?169˚ E 169˚ W 011˚ E 011˚ W


029˚ W. An eastbound vessel will cross the

equator in what longitude?061˚ E 061˚ W 119˚ E 119˚ W


029˚ W. A westbound vessel will cross the

equator in what longitude?119˚ W 029˚ E 061˚ E 119˚ E


134˚ E. A westbound vessel will cross the

equator in what longitude? 044˚E 044˚W 136˚ W 134˚ W



equator in what longitude? 019˚ E 019˚ W 161˚ W 161˚ E



equator in what longitude? 031˚ E 031˚ W 149˚ W 149˚ E

312 The vertex of great circle track is Long. 121˚

W. An eastbound vessel will cross the

equator in what longitude? 031˚ W 031˚ E 149˚ W 149˚ E

313 The upper vertex of great circle track is at

Long. 158˚ W. An eastbound vessel will

cross the equator in what longitude? 068˚ W 068˚ E 112˚ W 112˚ E

314 The upper vertex of great circle track is

Long. 144˚ W. A westbound vessel will

cross the equator in what longitude? 126˚ E 126˚ W 054˚ E 054˚ W

315 The vertex of great circle track is Long. 168˚

W. An eastbound vessel will cross the

equator in what longitude? 078˚ W 078˚ E 102˚ W 102˚ E

316 The difference of longitude between the

upper vertex and the lower vertex of a

great circle is _____. 180 deg. 90 deg. 360 deg. 45 deg.

317 A ship following a great circle track crosses

the equator at long. 135˚ 00' E on course

051.8˚T. If she continues along this great

circle track, find the latitude and longitude

of the upper vertex.

Lat. 38˚12' N;

Long. 135˚ 00'

W

Lat. 51˚12' N;

Long. 135˚ 00'

W

Lat. 58˚12' N;

Long. 135˚ 00'

E

Lat. 38˚12' N;

Long. 135˚ 00'

E

318 Determine the latitude and longitude of the

vertex along your great circle track when

going from Lat. 35˚ 17.6' N; Long.144˚ 23'

E to Lat.47˚ 36' N; Long. 124˚ 22' W.

Lat. 52˚47.8'

N;

Long. 158˚

07.3' W

Lat. 48˚56.4'

N;

Long. 143˚

36.4' E

Lat. 38˚12' S;

Long. 135˚ 00'

W

Lat. 38˚12' N;

Long. 135˚ 00'

W


initial course from Lat 08˚ 36' N, Long. 126˚

17' E to Lat. 02˚12' S, Long. 081˚ 53' W. 9076 miles,

079˚T

9076 miles,

097˚T

9106 miles,

069˚T

9760 miles,

085˚T

320 The great circle distance from Lat. 38˚17' N;

Long. 123˚ 16' W to Lat. 35˚ 01' N; Long.

142˚ 21' E is 4330 nautical miles and the

initial course is 300.9˚ T Determine the

latitude and longitude of the vertex.

Lat. 47˚39.5'

N;

Long. 167˚

18.5' W

Lat. 52˚47.8'

N;

Long. 158˚

07.3' W

Lat. 38˚12' N;

Long. 135˚ 00'

W

Lat. 47˚39.5'

S;

Long. 167˚

18.5' E

321 You receive a distress call from a vessel

reporting her position as Lat. 30˚21' N;

Long. 088˚34' W. Your position is at Lat.

24˚30' N; Long. 083˚00' W. Determine the

true course and distance to the distress

scene by Mercator Sailing.

320˚ T; dist.

460 nm

322˚T; dist

455nm

312˚T; dist

470nm

320˚T; dist

450nm

322 By Mercator sailing, determine the course

and distance when sailing from Lat 43˚08'

N; Long. 005˚56' E to Lat. 39˚ 29' N.; Long.

000˚ 24' W.

233˚T, 361

miles

053˚T, 361

miles

060˚T, 439

miles

240˚T, 452

miles


and distance when sailing from Lat 00˚00' ;

Long. 000˚03' W to Lat. 51˚ 12' N.; Long.

016˚ 14' E.

015˚T, 3185

nm

015˚T, 5299

nm

345˚ T, 3184

nm

195˚ T, 2273

nm


and distance when sailing from Lat 15˚12' S;

Long. 002˚12' E to Lat. 28˚ 49' S.; Long.

017˚ 14' E.

134˚T, 1171

miles

046˚T, 1171

miles

226˚ T, 817

miles

048˚ T, 1307

mles


and distance when sailing from Lat 08˚04' S;

Long. 034˚53' W to Lat. 14˚ 45' N.; Long.

017˚ 33' W.

037˚ T, 1718

miles

053˚ T, 2264

miles

143˚ T, 2262

miles

323˚ T, 1718

miles

326 A vessel at Lat. 38˚ 03' S, Long. 049˚ 38' W

heads for a destination at Lat, 41˚ 26' S,

Long. 038˚ 32' W. Determine the true

course and distance by Mercator Sailing.111.5˚ 113.5˚ 121.5˚ 211.5˚

327 A vessel at Lat. 21˚ 18.5' N, Long. 157˚ 52.2'

W heads for a destination at Lat, 08˚ 53' N,


course and distance by Mercator Sailing.099˚ T,

4617.5 miles

099˚ T,

4915.8 miles

081˚ T,

4617.5 miles

081˚ T,

4617.5 miles

328 A vessel steams 1082 miles on course 047˚

T from lat. 37˚18' N; Long. 024˚ 40' W.

What is the latitude and longitude of the

point of arrival by Mercator Sailing.

Lat. 49˚36' N;

Long. 006˚ 28'

W

Lat. 49˚30' N;

Long. 006˚ 22'

W

Lat. 49˚33' N;

Long. 006˚ 25'

W

Lat. 49˚39' N;

Long. 006˚ 31'

W

329 A vessel at Lat. 28˚ 00' N, Long. 116˚ 00' W

heads for a destination at Lat, 34˚ 00' N,


course and distance by Middle Latitude

Sailing.

312˚ T, 533

miles

323˚ T, 428

miles

324˚ T, 453

miles

302˚ T, 536

miles

330 A vessel at Lat. 20˚ 10' N, Long. 122˚ 00' E


Long. 128˚ 20' E. Determine the true

course and distance by Middle Latitude

Sailing.

043.5˚ T,

507.3 miles

041.5˚ T,

501.3 miles

041.9˚ T,

503.6 miles

048.5˚ T,

509.7 miles

331 A vessel at Lat. 49˚ 45' N, Long. 006˚ 35' W



course and distance by Mercator or middle

latitude Sailing.

246˚ T, 3597

miles

066˚ t, 3602

miles

268˚ T, 3602

miles

259˚T, 3660

miles

332 A ship sailed on course 326˚T from Latitude

20˚ 58.8' S, Long. 012˚ 37.6' E. For a

distance of 311 nautical miles. Find the

arrival longitude by mercator sailing.

Lat. 16˚41' N;

Long. 009˚

34.9' E

Lat. 16˚39' N;

Long. 009˚

11.9' E

Lat. 16˚44' N;

Long. 009˚

12.1' E

Lat. 16˚16' N;

Long. 009˚

30.9' E

333 A ship sails from Lat. 30˚20' N and steams

going south (180) for a distance of 72 miles.

What is her arrival latitude? 29˚ 08' N 29˚ 08' S 29˚ 28' N 28˚ 08' N


going south (180) for a distance of 72 miles.

What is her arrival latitude? 19˚18' N 29˚ 08' N 20˚03' N 20˚18' N


going south (180) for a distance of 182

miles. What is her arrival latitude? 00˚18' N 00˚18' S 01˚18' N 10˚18' S

336 A ship sails from Lat. 30˚20' S and steams


miles. What is her arrival latitude? 33˚20' S 29˚ 08' N 19˚ 08' N 19˚18' N



miles. What is her arrival latitude? 52˚34' S 40˚10' N 40˚10' S 33˚20' S


going north (000) for a distance of 372

miles. What is her arrival latitude? 46˚22' S 33˚20' S 40˚10' N 58˚46' S

339 A ship sails from Lat. 52˚34'' S and steams


miles. What is her arrival latitude? 58˚46' S 46˚22' S 33˚20' S 40˚10' S



miles. What is her arrival latitude? 28˚42' N 28˚42' S 52˚34' N 41˚06' N


going north (000) for a distance of 372

miles. What is her arrival latitude? 41˚06' N 28˚42' N 52˚34' N 46˚22' N



miles. What is her arrival latitude? 40˚10' N 40˚10' S 52˚34' N 52˚34' S

343 At 1210 LZT, on 01 December 2007, you

depart Seattle at Lat. 47˚ 36' N; Long. 122˚

22' W (ZD+8). You are bound for Guam,

Lat 13˚ 27' N; Long. 144˚ 37' E and you

estimate your speed of advance at 20

knots. The distance is 4,948 miles. What is

your estimated zone time of arrival in

Guam?

1334, 12

December

0600, 31

December

2154, 04

December

1934, 11

December

344 At 0915 LZT, on 07 November 2007, you

depart Seattle at Lat. 47˚ 36' N; Long. 122˚

22' W (ZD+8). You are bound for Kobe, Lat

34˚ 40' N; Long. 135˚ 12' E and you estimate

your speed of advance at 18.5 knots. The

distance is 4,527 miles. What is your

estimated zone time of arrival at Kobe?

0657, 18

November

1900, 13

November

0657, 19

November

1857, 18

November

345 At 1820 LZT, on 21 March 2007, you depart

San Francisco at Lat. 37˚ 48.5' N; Long. 122˚

24' W (ZD+8). You are bound for

Melbourne, Lat 37˚ 49.2' S; Long. 144˚ 56' E

and you estimate your speed of advance at

21 knots. The distance is 6,970 miles.

What is your estimated zone time of arrival

at Melbourne?

0814, 05 April 1214, 05 April 2214. 05 April 1314, 05 April

346 At 0915 LZT, on 26 July 2007, you depart

Yokohama at Lat. 37˚ 27' N; Long. 139˚ 39' E

(ZD-9). You are bound for Seattle, Lat 47˚

36' N; Long. 122˚ 22' W and you estimate

your speed of advance at 14 knots. The

distance is 4,245 miles. What is your

estimated zone time of arrival at Seattle?

0728, 07

August

0028, 07

August

1528, 07

August

1528, 08

August

347 At 0600 LZT, on 22 October 2007, you

depart Manila at Lat. 14˚ 35' N; Long. 120˚

58' E (ZD-8). You are bound for Los

Angeles, Lat 33˚ 46' N; Long. 118˚ 11' W and

you estimate your speed of advance at 20.2

knots. The distance is 6385.9 miles. What

is your estimated zone time of arrival at Los

angeles?

1808, 03

November

0657, 18

November

1008, 04

November

0208, 03

November

348 At 0530 LZT, on 20 December 2007, you

depart Capetown, South Africa (ZD-1). You

are bound for New York (ZD +5), and you

estimate your speed of advance at 25

knots. The distance is 6762 miles. What is

your estimated zone time of arrival at New

York?

0600, 31

December

1200, 31

December

0700, 31

December

1100, 31

Decmeber

349 Your ship will sail from a position in LAT

08˚51'N; LONG. 081˚31' W to position at

LAT 33˚ 51.5' S; LONG 151˚13' E. The

distance by great circle is 7635 miles, and

you estimate an average speed of 15 knots.

Find your estimated zone time of arrival if

you depart at 1510 ZT on July 23?

1110, 14

August

1110, 16

August

0110, 15

August

1510, 17

August

350 You are on a voyage from New York, USA,

to San Francisco, USA. The distance from

pilot to pilot is 5132 miles. The speed of

advance is 13.5 knots. You estimate 32

hours for bunkering at Colon, and 14 hours

for the Panama Canal Transit. If you take

departure at 0600 hours (ZD+4) on 16 May,

what is your ETA (ZD+7) at San Francisco?

2109, 02 June 0609, 01 June 0009, 03 June 0250, 02 June

351 You are on a voyage from Limoy, Costa

Rica, to Los angeles, USA. The distance

from pilot to pilot is 3150 miles. The speed

of advance is 14 knots. You estimate 24

hours for bunkering at Colon, and 12 hours

for the Panama Canal Transit. If you take

departure at 1836 hours (ZD+6) on 28

January, find your ETA (ZD+8) at Los

angeles?

1336, 08

February

1736, 09

February

1736, 08

February

0536, 08

February

352 You are on a voyage from

Baltimore,Mainland USA, to Seattle,

Washington, USA. The distance from pilot

to pilot is 5960 miles. The speed of advance

is 16 knots. You estimate 16 hours for

bunkering at Colon, and 12 hours for the

Panama Canal Transit. If you take departure

at 0824 hours (ZD+5), 18 November, find

ETA (ZD+8) at Seattle?

2154, 04

December

1654, 05

December

1354, 05

December

1354, 04

December

353 You are on a voyage from Halifax, Nova

Scotia, to Galveston, TX. The distance from

pilot to pilot is 2138 miles. The speed of

advance is 12.5 knots. You estimate 18

hours for bunkering enroute at Port

Everglades, FL. If you sail at 0648 hours

(ZD+4), on, on June 12, what is your ETA

(ZD+5) at Galveston?

0250, 20 June 2109, 20 June 0550, 20 June 1350, 20 June

354 You are on a voyage from Valdez, Alaska, to

the Panama Canal. The distance from pilot


is 15 knots. You estimate a layover at San

Francisco, CA of 36 hours If you take

departure at 0800 hours (ZD+10), on 29

October, what is your ETA (ZD+5) at

Panama Canal?

1900, 13

November

1808, 13

November

0657, 18

November

0900, 13

November

355 You are on a voyage from Belem. Brazil, to

Mobile, Alabama. The distance from pilot


is 14 knots. You estimate a layover at San

Juan, Puerto Rico of 17.5 hours If you take

departure at 2200 hours (ZD+3h 30m), on

26 February 2007, what is your ETA (ZD+6)

at Mobile?

2200, 08

March

1900, 08

March

0500, 08

March

2132, 17

March

356 At 0915 zone time, on 06 March, you

depart Sydney, Australia in LAT. 33˚ 51.5' S;

LONG. 151˚ 13.0' E (ZD-10). You are bound

for Kodiak, LAT. 57˚ 47' N; LONG. 152˚ 25.0'

W. If you estimate your speed of advance

to be 21 knots and the distance is 6,222

miles. What is your ETA at Kodiak?

2132, 17

March

2200, 08

March

0732, 17

March

0728, 18

March

357 You are on a voyage from San Diego, CA, to

New York, USA. The distance from pilot to

pilot is 4860 miles. The speed of advance is

15 knots. You estimate 18 hours for

bunkering at Colon, and 14 hours for the

Panama Canal Transit. If you take departure

at 0836 hours (ZD+7), 4 July, what is your

ETA (ZD+4) at New York?

0736, 19 July 1336, 19 July 0036, 19 July 0336 20 July

358 At 0800 zone time, on 15 April, your vessel

is heading west in position LAT.15˚ 10' N;

LONG. 165˚15' W at a speed of 22 knots.

The distance to your destination at LAT. 15˚

10' N; LONG. 135˚ 15' E is 3600 nautical

miles. What is your ETA ?

2339, 22 April 0814, 25 April 1439, 21 April 0536, 22 April

359 On Novemeber 21 at 2100 zone time,you

depart Pt. A (ZD+5) enroute to Pt. B (ZD+1).

The total distance is 3519 nautical miles.

What will be the speed to use in order to

arrive at Pt. B on December 3 at 1830 zone

time?

12.5 knots 12.0 knots 13.0 knots 13.5 knots

360 On September 13 at 1936 hours, your ship

was in Lat. 21˚32' N; Long. 070˚ 18' W. On

Sept. 14 at 1854 hours, your ship was in

Lat. 018˚ 15' N; Long. 065˚ 24' W. What is

your speed if your total distance run is 341

nautical miles?


361 You are departing San Francisco, California

(ZD+8) on Oct. 10 at 1200 LZT bound for

Yokohama, japan (ZD+9) with a total

distance of 4536 miles. What will be your

approximate speed if you plan to arrive

Yokohama on Oct. 19 at about 1900 LZT?


362 The GMT is 0445 hours and your zone

description is +1, your local zone time is

_____. 0345 hours 0445 hours 0545 hours 1545 hours

363 You are at longitude 124˚00' E and your

local mean time is 0520H on the 5th of the

month. What is the mean time at

Greenwich?

2104H on the

4th

1336H on the

4th

1336H on the

5th

2104H on the

5th

364 The LMT of sunrise as tabulated in the

Nautical Almanac indicates 05h 52 min.

You are at Longitude 099˚ 15'E. What will

be the LZT of sunrise?0615H 2315H 0552H 0152H



You are at Longitude 099˚ 15'W. What will









be the GMT of sunrise?2315H 0552H 0529H 0615H




be the GMT of sunrise?1229H 2315H 0615H 0552H







You are at Longitude 124˚ 00' E. What will





be the LZT of sunrise?0608H 0536H 0148H 0615h








be the LZT of sunrise?0544H 0600H 0616H 0536h

















378 The LMT of sunrise is 04h 30min. At LAT.

48˚55' N. LONG. 078˚ 18' W. Find the GMT

of sunrise. 09h 43m 12s 09h 16m 00s 09h 31m 03s 09h 20m 20s

379 The equation of time is12m 00s and the

mean sun is ahead of the apparent sun. If

you are in the central meridian of your time

zone, at what zone time will the apparent

sun cross the meridian?

1212H 1200H 1148H 1130H


apparent sun is ahead of the mean sun. If




1148H 1212H 1200H 1142H


apparent sun is ahead of the mean sun. If




1144H 1216H 1212H 1200H


mean sun is ahead of the apparent sun. If




1216H 1212H 1144H 1244H

383 The LMT of meridian passage taken from

the nautical almanac indicates 1210H. You

are at longitude 070˚ 30' E. What time

would you use to enter in the nautical

almanac to determine the declination of

the sun at local apparent noon (LAN)?

0728H 1652H 1842H 0652H

384 What is the geographical latitude of a body

whose declination is 23˚27' N? 23˚ 27'N 23˚ 27' S 27˚ 33' N 66˚ 33' S

385 What is the geographical latitude of star

"Deneb" whose declination is 45˚16' N? 45˚ 16' N 45˚ 44' N 44˚44' N 90˚00'

386 What is the geographical latitude of star

"Rigel" whose declination is 08˚ 12' S? 08˚ 12' S 81˚ 48' N 08˚ 12' N 81˚ 12' N

387 What is the geographical latitude of a body

whose declination is 66˚33' S? 66˚ 33'S 23˚ 27' N 66˚ 33' N 23˚ 27' S

388 What is the geographical longitude of a

body whose GHA is 127˚ 33' ? 127˚ 33' W 127˚ 33' E 052˚ 27' E 052˚ 27' W


body whose GHA is 149˚30' ? 149˚ 30' W 149˚ 30' E 127˚ 33' W 59˚ 30' E


body whose GHA is 232˚27' ? 127' 33' E 127˚ 33' W 149˚ 30' W 052˚ 27' W


body whose GHA is 210˚ 30' ? 149˚ 30' E 149˚ 30' W 127' 33' E 127˚ 33' W


body whose GHA is 279˚30' ? 080˚ 30' E 080˚ 30' W 180˚ 127' 33' E

393 The GP of a celestial body is Lat. 20˚ 36' S

and Long. 074˚ 10' E. Find its GHA and

declination on the celestial sphere. GHA = 285˚ 50'

Dec. = 20˚ 36' S

GHA = 295˚

10'

Dec. = 20˚ 36'

N

GHA = 074˚

50'

Dec. = 20˚ 36'

S

GHA = 285˚

50'

Dec. = 20˚ 36'

N

394 The GP of a celestial body is Lat. 15˚ 40' S

and Long. 074˚ 10' W. Find its GHA and


Dec. = 15˚ 40' S

GHA = 285˚

50'

Dec. = 20˚ 36'

S

GHA = 074˚

10'

Dec. = 15˚ 40'

N

GHA = 185˚

10'

Dec. = 15˚ 40'

S

395 The GP of a celestial body is Lat. 45˚ 00' N

and Long. 090˚ 00' E. Find its GHA and


Dec. = 45˚'00' N

GHA = 070˚

00'

Dec. = 45˚ 00'

S

GHA = 270˚

00'

Dec. = 00˚ 45'

N

GHA = 090˚

00'

Dec. = 00˚ 45'

N

396 The GP of a celestial body is Lat. 23˚ 27' N

and Long. 114˚ 20' W. Find its GHA and

declination on the celestial sphere.GHA = 114˚

20'

Dec. = 23˚'27'

N

GHA = 245˚

40'

Dec. = 23˚'27'

S

GHA = 245˚

40'

Dec. = 23˚'20'

N

GHA = 245˚

00'

Dec. = 23˚'27'

N

397 A vessel heading magnetic north and its

magnetic compass indicates a heading of

356 deg. What action should be done to

remove this error during compass

adjustment?

If the red

ends of the

magnets are

to starboard,

and the

athwartship

tray is at the

top, you

should add

some more

magnets

If the red ends

of the

magnets are

to port, you

should raise

the

athwartship

tray

If the red ends

of the

magnets are

to port, and

the

athwartship

tray is at the

top you

should add

some more

magnets

If the red ends

are to

starboard, you

should lower

the

athwartship

tray.

398 A vessel is heading magnetic east and its


076 deg. What action should be taken to


adjustment?

If the blue

ends of the

magnets are

aft, and the

fore-and-aft

tray is at the

top, you

should add

some

magnets

If the blue

ends of the

magnets are

aft, you

should lower

the fore and

aft tray

If the blue

ends of the

magnets are

aft, and the

fore-and-aft

tray is at the

top, reverse

the magnets

If the blue

ends of the

magnets are

forward, and

the fore-and -

aft tray is at

the bottom,

you should

add some

magnets





adjustment?

If the blue

ends of the

magnets are

aft, and the

fore-and-aft

tray is at the

top, you

should add

some

magnets

If the blue

ends of the

magnets are

aft, you

should lower

the fore and

aft tray

If the blue

ends of the

magnets are

aft,and the

fore and aft

tray is at the

top, you

should

reverse the

magnets

If the blue

ends of the

magnets are

forward, and

the fore and

aft tray is at

the bottom,

you should

add some

magnets





adjustment?If the red

ends of the

magnets are

aft, you

should lower

the fore-and-

aft tray

If the red ends

of the

magnets are

to port, you

should lower

the

athwartship

tray

If the blue

ends of the

magnets are

to port, and

the

athwartship

tray is at the

top, you

should

remove some

of the

magnets

If the red ends

of the

magnets are

aft, and the

fore-and-aft

tray is at the

top, you

should add

some more

magnets





adjustment?

If the red

ends of the

magnets are

forward, and

the fore-and-

aft tray is at

the bottom,

you should

remove some

magnets

If the red ends

of the

magnets are

aft you should

lower the fore-

and-aft tray

If the red ends

of the

magnets are

to port, you

should raise

the

athwartship

tray

If the red ends

of the

magnets are

to port,and

the

athwartship

tray is at the

top, you

should

reverse the

magnets


magnetic compass reads a heading of 093

deg. What action should be taken to


adjustment?

If the red

ends of the

magnets are

aft, you

should raise

the fore and

aft tray.

If the red ends

of the

magnets are

aft, and the

fore and aft

tray is at the

top, you

should

remove some

magnets

If the red ends

are aft and

the fore and

aft tray is at

the bottom,

you should

reverse the

magnets

If the blue

ends of the

magnets are

forward you

should

remove some

magnets from

the fore and

aft tray


magnetic compasss indicates a heading of

086 deg. What actio should be taken to


adjustment?

If the blue

ends of the

magnets are

aft, and the

fore and aft

tray is at the

top, you

should add

some

magnets

If the blue

ends of the

magnets are

forward, you

should raise

the fore-and-

aft tray

If the blue

ends of the

magnets are

aft, you

should lower

the fore-and-

aft tray

If the blue

ends of the

magnets are

aft, and the

fore-and-aft

tray is at the

bottom, you

should

reverse the

magnets


magnetic compasss indicates a heading of



adjustment?

If the blue

ends of the

magnets are

forward you

should raise

the fore-andf-

aft tray

If the blue

ends of the

magnets are

to port you

should raise

the

athwartship

tray

If the red ends

of the

magnets are

to port you

should lower

the

athwartship

tray

If the red ends

of the

magnets are

aft you should

lower the fore-

and-aft tray

405 A vessel is heading magnetic north and its




adjustment?

Raise or lower

the

athwartship

magnets

Move the

quadrantal

spheres lower

closer to the

compass

Raise the

heeling

magnet if the

red end is up

Remove some

of the flinders

bar





adjustment?

If the red

ends are to

starboard, the

athwarthship

magnets

should be

lowered

If the blue

ends are

forward, the

fore-and-aft

magnets

should be

raised

If the red ends

are to

starboard and

the tray is at

the top, add

some

athwartship

magnets

If the blue

ends are aft,

the fore-and-

aft magnets

should be

raised





adjustment?

If the red

ends of the

magnets are

to port, you

should lower

the

athwartship

tray tray

If the red ends

of the

magnets are

aft you should

raise the fore

and aft tray

If the blue

ends of the

magnets are

to port, and

the

athwartship

tray is at the

top, you

should

remove some

of the

magnets

If the blue

ends of the

magnets are

aft, you

should raise

the fore-and-

aft tray


magnetic compass is indicating a heading of



adjustment?

If the blue

ends of the

magnets are

to starboard,

and the

athwartship

tray is at the

bottom, you

should

remove some

magnets

If the red ends

of the

magnets are

to starboard,

and the

athwartship

tray is at the

bottom, you

should

reverse the

magnets

If the blue

ends of the

magnets are

to starboard,

you should

raise the

athwartship

tray

If the blue

ends of the

magnets are

to port, and

the

athwartship

tray is at the

top, you

should

remove some

magnets


magnetic compass is indicating is heading

of 003 deg. What action should be taken to


adjustment?

If the red

ends are to

starboard,

and the

athwartship

tray is at the

bottom, you

should

remove some

magnets.

If the red ends

are to

starboard, you

should raise

the

athwartship

tray.

If the red ends

are to port

and the

athwartship

tray is at the

top, you

should

reverse the

magnets

If the red ends

are to port

and the

athwartship

tray is at the

top, you

should lower

the tray.

410 A vessel is heading magnetic northwest and

its magnetic compass indicates a heading of



adjustment?Any of these

If the

quadrantal

spheres are all

the way out,

replace them

with smaller

spheres

If the

quadrantal

spheres are all

the way out,

remove one of

the spheres

Move the

spheres out





adjustment?

If the

quadrantal

spheres are

all the way

out, replace

them with

smaller

spheres

If the

quadrantal

spheres are all

the way in,

replace them

with larger

spheres

Move the

spheres inany of these





adjustment?

If the

quadrantal

spheres are in

as far as

possible,

replace them

with larger

spheres

If the

quadrantal

spheres are in

as possible,

replace them

with smaller

spheres

Move the

quadrantal

spheres out

If the spheres

are in as

possible

remove one of

the spheres


its magnetic compass reads a heading of


remove this error dutring compass

adjustment? Move the

quadrantal

spheres in

If the

quadrantal

spheres are

out as far as

possible

replace them

with smaller

spheres

If the

quadrantal

spheres are in

as far as

possible

remove one of

the spheres

If the

quadrantal

spheres are in

as far as

posssible

replace them

with smaller

spheres

414 You have completed the compass

adjustment on magnetic east and magnetic

south. The vessel is now steady on

magnetic north but the compass reads 004

deg. You should now adjust the compass

until reads ______?

002 deg. 356 deg. 358 deg. 000 deg.


adjustment on magnetic east and magnetic


magnetic west but the compass reads 266

deg. What action should be taken to

remove this error of the compass?

Adjust the

compass with

the fore and

aft magnets

until the

compass

reads 268

deg.

Adjust the

compass with

the

athwartships

magnets until

the magnetic

compass

reads 268 deg.

Adjust the

compass with

the fore and

aft magnets

until the

magnetic

compass

reads 270 deg.

Adjust the

compass with

the

quadrantal

spheres until

the magnetic

compass

reads 274 deg.


adjustments on magnetic east and

magnetic south. The vessel is now steady

on magnetic north but the compass reads



Use the

athwarthship

magnets and

adjust the

compass until

it reads 002

deg.

Use the

flinders bar

and adjust the

magnetic

compass until

it reads 002

deg.

Use the fore

and aft

magnets and

adjust the

magnetic

compass until

it reads 000

deg.

Use the

athwarthship

magnets and

adjust the

magnetic

compass until

it reads 000

deg.




on magnetic west but the compass reads

266 deg. You should adjust the compass

until it reads _____ ?

268 deg. 358 deg. 002 deg. 273 deg.

418 You have completed the magnetic compass



on magnetic north but the compass reads

356 deg. You should now adjust the

compass until it reads ______?

358 deg. 000 deg. 002 deg. 268 deg.




onmagnetic north but the compass reads



Use the

athwarthship

magnets and

adjust the

compass until

it reads 358

deg.

Use the fore

and aft

magnets and

adjust the

magnetic

compass until

it reads 358

deg.

Use the

athwartship

magnets and

adjust the

magnetic

compass until

it reads 000

deg.

Use the

quadrantal

spheres and

adjust the

magnetic

compass until

it reads 000

deg.


asjustments on magnetic east and magentic


magnetic west but the compass read 276

deg. You should now adjust the compass

until it reads ______ ?

273 deg. 270 deg. 268 deg. 358 deg.

421 You have just completed the magnetic

compass adjustment on magnetic east and

magnetic south. Your vessel is now steady

on magnetic north but the compass read


compass until it reads ______ ?

357 deg. 358 deg. 356 deg. 000 deg.


compass adjustments on magnetic east and




compasss until it read ______?

267 deg. 272 deg. 268 deg. 270 deg.






compasss until it read ______?

272 deg. 273 deg. 270 deg. 268 deg.



magnetic south. Your vessel is now steady

on magnetic north but the magnetic

compass reads 006 deg. You should now

adjust the compass until it read _____ ?

003 deg. 002 deg. 000 deg. 358 deg.

425 You started adjustment on the magnetic

compass on magnetic heading east and

magnetic heading south. You now come to

the next Cardinal magnetic heading west

and north removing half of the deviation.

You are now steady on intercardinal

magnetic heading nort

045 deg 047 deg 044 deg 042 deg

426 You started adjustment on the magnetic

compass on magnetic heading east and

magnetic heading south. You now come to

the next Cardinal magnetic heading west

and north removing half of the deviation.

You are now steady on intercardinal

magnetic heading nort

045 deg 043 deg 047 deg 044 deg

427 MiscQs A

chart suitable for inshore navigation, for

entering bays and harbours, would have a

scale of:

1:50,000 to

1:150,000

1:150,000 to

1:600,000

1:600,000 and

smaller

1:100,000 to

1:500,000

428 A composite great cirlce route is not as

short a distance as a great circle route, but

it is sometimes used instead. Why? It avoids high

latitudes

where ice

may be found

it is the "least

time" route

It avoids areas

of heavy

traffic

It minimize

the number of

course

changes

429 A free gyroscope is said to have "three

degrees of freedom". From those listed,

which is NOT one of these? Latitude axis Spin axis Altitude axis Azimuth Axis

430 A gyro compass on a high-speed craft often

takes time to settle correctly when altering

course. What causes this problem? The change in

the (large)

value of the

latitude

course and

speed error

when altering

course

The

acceleratios of

high speed

craft,

producing

additional

errors

The vibrations

caused by

light

displacement

ships at high

speed

The

unsteadiness

of high-speed

craft, due to

heel when

altering

course at high

speed

431 A light giving 4 flashes, which has sectors

showing two different colours, could have

an abbreviated description:Fl(4) WR 15s

15m 12.10M

Fl 15s 15m

12.10MF WR 15s 15m

F(4)WR 15s

15m 12.10M

432 A position line on a chart is defined as a

line: somewhere

on which the

observer is

situated

passing

through some

stated

position

joining any

two positions

drawn from

the ship to a

desired

destination

position

433 After all the adjustments have been made

of the sextant, any remaining error is

called: index error personal errorinstrument

error

summation

error

434 All gyro compasses, when on the eqautor,

should have:no latitude

error

a westerly

error

an easterly

error

an error

depending

upon the

course

435 Apart from ensuring navigational safety at

anchorage, what should the OOW do? Monitor the

VHF for

orders for the

vessel

Check that the

engineer on

wathc is in the

engine room

Have all

bridge

equipment

cleaned

Direct the

lookout to do

maintenance

work

436 At sunrise and sunset, the effect of

atmospheric refraction is to: reduce he

sun's

apparent

vertical

diameter

make the sun

appear to

change

altitude more

slowly

make the sun

appear

smaller

overall

reduce the

sun's

apparent

horizontal

diameter

437 At the summer solstice, the altitude of the

sun at noon to an observer at the pole

would be? 23.5° 0° 66.5° 90°

438 At the winter solstice, the sun will not rise

at all higher latitudes than: 66.5° 23.5° 72.5° 90°

439 Charted depths are always measured

below:chart datum

mean sea

level

mean low

water neaps

mean low

water springs

440 Curves on chart showing values of equal

variation are called: Isogonic Isobaric Isothermal Isopharic

441 Damping in azimuth in a gyro compass

produces: a setting

position

exactly on the

meridian

an error which

varies with

latitude

an error which

is constant

an error which

varies

longtitude

442 Damping in tilt in a gyro compass produces:

an error

which varies

with latitude

a setting

position

exactly on the

meridian

an error which

is constant

an error which

varies with

longtitude

443 Distance on a chart is measured using:

latitude saclelongtitude

scale

any uniform

scale

none of the

given options

444 Fiber-optic compasses have advantages

over conventional gyro compasses. From

those listed, which is NOT one of those

advantages?

They are

more

accurate

They have a

very short

setting time

They have low

maintenance

and high

reliability

They can be

used in high

latitudes an at

high speeds.

445 For a circumpolar star, which from those

listed is NOT true?

The LHA of

the star will

always be less

than 90°

The

declination

and latitude

of the

observer must

be the same

name ( both

north or both

south

The polar

distancce of

the star must

be less than

the observer;s

latitude

The star

above thew

horizon for 24

hours of the

day

446 Free gyroscopes are turned into gyro

compasses by utilizing:gravity

the spin of the

earth

the torque of

the wheel

the rate of

spin of the

wheel

447 From those listed which should be the

preferred method position fixing for

greatest accuracy and certainly of position?taking a radar

and visual

bearing

taking several

radar bearings

taking a radar

range and

radar bearing

taking several

radar ranges

448 From those listed, the best and target to

use for a radar bearing is: an isolated

feature

a large

headland

a sloping

foreshore

a coastal

indentation

449 From those listed, the best and target to

use for radar ranging is a:cliff face small rok

low- lying

point

target such as

a lighthouse

450 From those listed, which are " soft iron"

corrector?The spheres

The fore and

aft correctors

The

athwartship

corrector

the heeling

error

correctors

451 From those listed, which is NOT a reason

for having the standard magnetic compass

high up and on the certerline in the ship? In order to

reduce the

chance of

damage

To enable an

all round view

of the horizon

for takinhg

bearings

to keep it

away from

most other

sources of

magnetism

So that

induced

magnetism is

balanced as

evenly as

possible

452 From those listed, which is NOT a way of

destroying magnetism? Placing

another

magnet next

to it with

unlike poles

together

Heating the

magnet

Subjecting the

magnet to

violent shocks

Applying

alternating

current to the

magnet

453 From those listed , which of the statement

about magnetic variation is TRUE?

The value of

variation at a

place changes

slowly

The value of

variation

varies

accoreding to

the magnetic

influences of

the ships

The value of

variation at a

particular

place is

always the

same

The value of

variation is

due to the

combinfed

influenced of

the ships andn

the earthy

454 From those listed, which of the statement

about the dip of a magnet is TRUE? At the

magnetic

equator, the

dip is zero

and the

directive

force

greatest

At the

magnetic

equator, the

dip is

maximum and

the directive

force the least

At the

magnetic

poles , the dip

is least and

the directive

force is the

greatest

At the

magnetic

poles, the dip

is least and

the directive

force is

reduced

455 From those listed, which of the statement

about the poles of a magnet is TRUE?The red pole

will attract a

blue pole and

is the north

seeking end

The red pole

will attract a

blue pole and

is the south

seeking end.

The red pole

will repel a

blue and is

the north

seeking end

The red pole

will repel a

blue and is

the south

seeking end

456 From those lited, which would be the

preferred method of position fixing for

greatest accuracy and certainty of position?Taking a radar

range and

visual bearing

Taking

several radar

bearings

Taking a radar

range and

radar bearing

taking several

radar rangres

457 Gaussin error of the magnetic compass is

caused by:

the ships

being on the

same heading

for a long

period

the ship

swinging

quickly from

one course to

another

external

magnetic

influences,

such as from

magnetic

mines

internal

magnetic

influences,

such as

electrical

equipment

near the

compass

458 Gaussin or Retentive error:

is uncertain

in size and

may take

several hours

to clear

can only be

approximately

calculated by

undertaking a

swing of the

compass

is uncertain in

size, but only

affects the

compass for a

very short

period

can be

calculated and

allowed for

when

settimng

courses

459 Great circles appear as straight lines on:

gnomonic

charts

orthomorphic

charts

transverse

mercator

charts

marcator

charts

460 Heeling error is at its maximum when the

course are:north or

southeast or west

NE,SE,WE,or

NW

any course -

effects are

independent

of the course

461 How are secondary port chosen to be

linked with a particular standard port?The standard

port is is the

nearest one

with similar

tidal

characteristic

s

The standard

port is the

nearest one to

the secondary

port

The times of

high and low

water are very

close for he

standard and

secondary

ports

The heights of

high and low

water are very

close for the

satndard and

secondary

ports

462 How does a current flowing in the same

direction as the wind affect the sea wave

length and height? It increases

ave length

and decreases

wave height

It decreases

wave length

and wave

height

It increases

wave length

and height

It decreases

wave length

and increases

wave height

463 How is a ship's permanent magnetism

acquired during building?By the

hammering

and heating

processes

while heading

in the same

direction in

the building

the yard

By the

intersection of

permanent

magnets into

the structure,

to offset the

inducing

forces

By the sum of

all the

magnetic

forces of the

individual

components

By the

designers who

ensure that

the magnetic

effects are

within limits

imposed

under the

class of the

ship

464 How is distance measured on a Mercator

chart?

On the

latitude scale

On the scale

of meridional

parts

On the scale

drawing at the

bottom of t he

chart

On the

longtitude

scale

465 How many degrees are there in each point

of the compass? 11.25 15 17.5 12

466 How often are chart correction published?

Weekly Monthly Yearly Annualy

467 How often is a chart catalogue published?

Annualy Monthly Twice a year Weekly

468 How often should a position fix be taken

during a sea voyage if the ship is in open

coastal waters?Atleast every

30 minutesTwice a watch

Just before

the change of

watch

Only when the

visibility drops

469 How often should the auto pilot be tested

in manual mode?At least once

a watch

At least once

a day

At least once

in a passage

Prior to arrival

and departure

only

470 How often should the magnetic compass

error be checked? Once a watch

and after a

major course

alteration

Once a day Twice a day

After each

major

alteration of

course

471 How should tidal predictions be made for

stretches of coastline between Secondary

Ports?

By using a co -

tidal line

chart

By using the

nearest port

prediction

By

interpolating

between the

predictions

for the

nearest ports

on either side

Such

predictions

should not be

made

472 If a ship has a permanent magnetism with

a blue pole forward, the deviation caused

will be;zero on north

and south,

east on

easterly, west

on westerly

courses

zero on north

and south,

west on

easterly, east

on westerl

courses

zero on east

and west,

west on

northerly,east

on southerly

courses

zero on east

and west, east

on northerly,

west on

southerly

courses

473 If a ship has permanent magnetism with a

blue pole to port, the deviation caused will

be:zero on east

and west,

west on

northerly,east

on southerly

courses

zero on north

and south,

east on

easterly,west

on westerly

courses

zero on north

and south,

west on

easterly,east

on westerly

courses

zero on east

and west, east

on

northerly,wes

t on southerly

courses

474 If a ship has permanent magnetism wit a

red pole forward, the deviation caused will

be: zero on north

and

south,west on

easterly,east

on westerly

courses

zero on north

and

south,east on

easterly,west

on westerly

courses

zero on east

and west,

west on

northerly,east

on southerly

courses

zero on east

and west,east

on

northerly,wes

t on southerly

courses

475 If a ship is built a yard while heading

south,the poles of permanent magnetism

will be:

blue to the

bow and red

to the stern

red to the

bow and red

to the stern

if built in the

northen

hemisphere,re

d to the

blow,but built

in the

southern

hemisphere

blue to the

bow

if built in the

northern

hemisphere,

blue to bow,

but built in

the southern

hemisphere

red to the

bow

476 If a ship is built in a yard while heading

east, the poles of permanent magnetism

will be:

red to port

and blue to

starboard

if built in the

northern

hemisphere,re

d to port,if

built in the

southern

hemisphere

blue to port

blue port and

red to

starboard

if built the

northern

hemisphere,bl

ue to port,if

built in the

southern

hemisphere

red to port

477 If a ship is built in a yard while heading

north , the poles of permanent magnetism

will be:

red to the

bow and blue

to the stern

if built the

northern

hemisphere,re

d to the

bow,if built in

southern

hemisphere

blue to the

bow

blue to the

bow and red

to the stern

if built in the

northern

hemisphere,bl

ue to the

bow,if built in

the southern

hemisphere

red to the

bow

478 If a star has a northerly declination and the

observer is in north latitude,which of the

statements listed is TRUE?The star will

be above the

horizon for

more than 12

hours

The star must

be

circumpolar

The star will

be above the

horizon for

less than 12

hours

The bearing of

the star must

be south

when on the

meridian

479 If the axis of a free gyroscope in a north

latitude is horizontal and pointed to the

east of north of the meridian,it will:dry east and

tilt up

drift west and

tilt up

drift east and

tilt down

drift west and

tilt down

480 If the axis of a free gyroscope on the

equator is horizontal,the northerly end of

the spin axis will:

tilt up if to

the east of

the meidian

drift west and

tilt up

tilt up if to the

west of the

meridian

drift east and

tilt up

481 If the OOW is in doubt as to the Pilot's

actions or Intentions,what must he do? Seek

clarification

from the

Pilot, notify

the master

and take

corrective

action

Avoid taking

any action

Ask the pilot

to leave the

bridge

Call the

master and

wait for him

to take action

482 If the trace is not correctly centered,error

may occur when: measuring

bearings

using the gain

control

measuring

ranges

using the

tuning control

483 If the true transit bearing of two leading

lights is red off the chart and the compass

bearing of the two lights, when in transit,is

taken,then the difference between the two

bearings so obtained is the:compas error deviation Variation

magnetic

bearing

484 In an echo sounder, what converts the

electrical signal into sound? The

transducer

The signal

generator

The

modulatorThe amplifier

485 In what direction does the axis of the gyro-

compass wheel point? True NorthMagnetic

NorthNorth relative Compas North

486 In which publication can information on

ship reporting be found? ALRS Ship Routeing IAMSARSOPEP

Manual

487 In which publication can information on

VTS be found?ALRS Tides tables

Routeing

charts

Chart

Catalogues

488 Incoming target echoes are detected by

the:mixer cyrstal

video

amplifierI.F amplifier

Local

oscillator

489 Latitude on the terrestrial sphere is

comparable with what on the celestial

sphere? DeclinationCelestial

meridianAltitude

Celestial hour

circle

490 Latitude,course and speed error of a gyro

compass:applies to all

gyro

compasses

applies only to

gyros which

are damped in

azimuth

does not

occur in a

properly set

up gyro

compass

applies only to

gyros which

are damped in

tilt

491 Magnetic compass deviation changes with:

heading draught speed longtitude

492 Magnetic variation changes its value with:

the vessel's

position on

the earth

the location of

the compass

within the

vessel

the change in

direction of

the vessel's

heading

the vessel's

trim or heel

493 Marine radar wavelenghts are measured in:

centimetersfleet per

secondsmicroseconds megahertz

494 Most commonly,ship's radar operates in

the: X- BAND L - BAND S-BAND Q-BAND

495 On the chart, to find the course to steer to

make a good a course, allowing for current

and leeway , the current and leeway would

be applied:

current first,

at the start of

the run and

then leeway

leeway first,at

the start of

the run, and

thenthe

current

Current and

then leeway ,

at the end of

the run

leeway, and

then current

at the end o f

the run

496 Over what length of time a diesel powered

vessel should be slowed down from full sea -

speed to maneuvering speed? 1 hour 20 minutes 10 minutes 4 hours

497 Precession in relation to a free gycroscope

is:the change of

dirction of the

spin axis

when a force

is applies at

right angles to

the axis

the rate of

change of

direction of

the spin axis

due to the

rotation of the

earth

the rate of

change of

direction and

tilt of the spin

axis due to

the rotation

of the earth

the change of

direction of

the spin axis

when a force

is applied in

the direction

of the axis

498 Radar does not transmit continuously

because it would: prevent

detection of

targets

cause

interference

to other

vessels

reduce the life

of

components

make the

equipment

get very hot

499 Radio signals travel a approximately a

speed of: 300 milion

meters per

second

30 million

meters per

second

3 million

meters per

second

3000 milion

meters per

second

500 Secondary Ports associated with Standard

Ports are classed in that way because: the tidal

curves are

similar

the high and

low water

heights are

similar

they are

secondary in

importance

the high and

low water

times coincide

501 Should the OOW, who is escorting the pilot

to the pilot ladder, be equipped with a

walkie-talkie for communication with the

bridge?Always

Yes, but only

if visibilty is

restricted

Its up to the

pilot to decide

Its not

necessary

502 Sidereal hour angle is defined as the

angular distance of an hour circle: West of the

First Point of

Aries

West of the

observer's

meridian

West of the

prime(Greenw

ich) meridian

East of a

reference

hour circle

503 Sounds waves will travel through:

gases, liquids

and solids

gases and

liquids only

a vacuum,

gases,liquids

and solids

a

vacuum,liquid

s and solids

504 Spring tides normally occur:

about every

two weeks

about every

seven days

about every

three weeks

about every

four weeks

505 Stars tabulated in the nautical almanac

which have a negative magnitude (e.g. -

1.4)? Are very

bright

Are only

visible in the

southern

hemisphere

Should only

be used for

navigation

exceptional

circumtances

Are only

visible with

the aid of the

sextant

telescope

506 The " equation" of time" is

the interval

between

apparent time

and mean

time

the formula

detremining

local time

from

Greenwich

time

the formula

for calculating

the time of

noon

the difference

a lunar day

and a solar

507 The " magnetic variation" is the angle

between:

the

geographic

and magnetic

meridians

the

geographic

meridian and

compass

north

the magnetic

meridian and

compass

north

the vessel's

head by gyro

and the

vessel's head

by standard

compass

508 The angle between the magnetic north and

the true north is :Variation deviation compass error

magnetic

compass error

509 The axis of a free gyroscope is pointed at a

star. From those listed, which is not

correct?The axis

cannot be

distributed

from this

direction

while the rate

of spin is

maintained

The axis will

circle the

celestial poles

once in

23h56m

approximately

The axis will

stay pointing

at the star

The axis will

circle the

north celestial

pole in an anti-

clockwise

direction

510 The chart abbreviation "Al Fl WR 60 secs"

indicates:

a white flash

followed

immediately

by a red flash

every 60

seconds

a white flash

every 60

seconds

followed by a

red flash 60

seconds later

a white flash

every 30

seconds

followed by a

red flash 30

seconds later

a white flash

followed

immediately

by a red flash

every 60

seconds then

a red flash

followed

immediately

by a white

flash every 60

seconds

511 The commonest use of the ABC tables is to

find the azimuth of a celestial body. These

tables can also be used to:

find the initial

course in a

great circle

sailing

calculation

pre-compute

true altitudes

determine

course and

distance run

solve

terrestrial

triangles for

plane sailing

calculations

512 The declination of a celestial body is the:

arc of the

celestial

meridian

between the

equinoctial

and the

parallel of

declination

passing

through the

body

angle,

measured at

the center of

the earth,

between body

and the

ecliptic

angle,

measured at

the center of

the earth,

between the

observer and

the body

arc of the

celestial

meridian

between the

ecliptic and

the parallel of

declination

passing

through the

body

513 The deviation of a compass produced by a

disturbing magnet varies:inversely with

the cube of

the distance

from the

magnet

inversely with

the square of

the distance

from the

magnet

directly with

the distance

from the

magnet

inversely with

the distance

from the

magnet

514 The earth is said to be in "aphelion" on

approximately: 4th July 21st January 21st June 1st January

515 The earth is said to be in "perihelion" on

approximately: 1st January 21st January 21st June 4th July

516 The effect of gravity control makes the axis

of the gyroscope: move anti-

clockwise

around a

central

position in an

ellipse

move

clockwise

around a

central

position in an

ellipse

move anti-

clockwise

around a

central

position in a

circle

move

clockwise

around a

central

position in an

ellipse

517 The first point of Aries is the point on the

celestial sphere where: the ecliptic

cuts the

equinoctial on

the sun's

apparent path

from south to

north

the sun

crosses the

equinoctial

when going

from north to

south

the sun

crosses the

ecliptic when

going from

south to north

the prime

meridian cuts

the

equinoctial

518 The free gyroscope are turned into gyro

compasses by utilizing:gravity

the spin of the

earth

the torque of

the wheel

the rate of

spin of the

wheel

519 The frequency of a radio wave is:

the number if

wavelengths

which pass a

given point in

one second

the speed

which a radio

wave passes a

given point

the distance

from the crest

one wave to

the next crest

the number of

meter of

wavelength

per second

520 The GPS system uses satellites which:

circle on earth

approximatel

y twice each

day in a

precise orbit

are on polar

orbits,

separated by

longitude

are on orbits

parallel to the

equator and

distributed to

near the poles

are

geostationary,

but

distributed

around the

earth

521 The GPS system uses:UHF radio

signals

MF radio

signals

HF radio

signals

LF radio

signals

522 The horizontal distance between the

adjacent crest of a radio wave is called: the

wavelengththe amplitude a cycle the frequency

523 The intensity of the election beam in the

C.R.T. is controlled by:varying the

potential on

the grid

passing a

current

through the

deflection coil

a signal from

the time unit

the action of

the first

anode

524 The intermediate frequency is generated by

the: mixer crystal magnetronselsyn

generatorlocal oscillator

525 The magnetic equator is:

the line

joining places

where the dip

is zero

parallel to the

earth's

equator, but

moves north

and south

with the

seasons

coincident

with the

earth's

equator

the line

joining places

where the

directive force

is least

526 The magnetic force exerted at any point in

the magnetic field varies:inversely with

the square of

the distance

from the

magnet

inversely with

the distance

from the

magnet

directly with

the distance

from the

magnet

inversely with

the cube of

the distance

from the

magnet

527 The magnitude of a star is a measure of its:Relative

brightness

Absolute

brightnessDiameter

Semi-

diameter

528 The magnitude of a star which can only just

be seen with the naked eye on a clear, dark

night is:6th

magnitude

3rd

magnitude

4th

magnitude1st magnitude

529 The main source of error in a GPS position

would be from: Satellite clock

errorReceiver error

Relatively

error

There is no

error with GPS

530 The moon rotates around the earth

approximately: 28 days 7 days 1 day 1 year

531 The moon spins on its axis approximately

every: 28 days 7 days 1 day 1 year

532 The most appropriate chart for navigating

when approaching a harbour is: a large scale

chart

a small scale

chart

a harbour

plan

a gnomonic

chart

533 The path of the moon's rotation around the

earth, relative to the plane of the earth

rotation the sun is:at an angle of

5°at right angles Parallel

at an angle of

23.5°

534 The path of the earth's rotation around the

sun, relative to the plane of the equator is: at an angle of

23.5°at right angles

at an angle of

5°Parallel

535 The period of a semi-diurnal tide is

approximately: half a lunar

day

half a sidereal

daya lunar day

half a solar

day

536 The plane of the index mirror of the sextant

is at an angle of 20° to the plane of the

horizon mirror. What is the reading on the

arc?40° 80° 20° 60°

537 The point at which the helm must be

applies to achieve a required course

alteration is called the:wheel-over

positionway-point abort-point drift-point

538 The principle of a fiber-optic "gyro"

compass relies on: three fiber-

optic rings,

mounted on a

platform,

which sense

the rotations

of the

platform due

to ship and

earth

movement

a fiber-optic

aerial, which

detects signals

from a

satellite and

computes the

direction of

north

two fiber-

optic sensors,

which

measure the

accelerations

of the ships

and compass

these to the

movement of

the earth

a spinning

fiber-optic

wheel, which

operates like a

conventional

gyro, but is

much lighter

539 The process of turning a gravity controlled

gryroscope into a compass is called:damping torque tilting precession

540 The relationship between the distance on

the earth and the length by which that

distance is shown on the navigational chart

is called the:natural scale actual scale

calculated

scalevariable scale

541 The ship's magnetic compass should be

adjusted following certain circumstances.

From those listed, which is NOT one of

those circumstances? When a new

Master joins

the ship

When major

structural

repairs have

been carried

out

When

electrical

equipment is

installed in

the vicinity of

the compass

When it

appears

unreliable

542 The ship's magnetic compass should be

especially checked for error following

certain circumstances. From those listed,

which is not one of those circumstances?

If the ship has

visited an

areas with a

large value of

variation

After using

electromagne

tic lifting

appliances to

load or

discharge

After using

cargoes with

magnetic

properties

If the ship has

been laid up

for a period

543 The shortest distance between two points

on the earth's surface is: An arc of a

great circleA loxodrome

An arc of a

small circle

a para-angular

course

544 The sidereal hour angle of a celestial body

is the:arc of the

equinoctial

(measured

westwards

from the first

point of Aries)

to the

celestial

meridian

through the

body

act of the

equinoctial

(measured

eastwards

from the first

point of Aries)

to the

celestial

meridian

through the

body

angle at the

celestial pole

between the

meridian

through

Greenwich

and the

meridian

through the

body

(measured

westwards)

Angle at the

celestial pole

between the

meridian

through

Greenwhich

and the

meridian

through the

body

(measured

eastwards)

545 The summer solstice in the northern

hemisphere is approximately on: 21st June 1st June 1st July 21st July

546 The summer solstice in the southern

hemisphere is approximately on: 21st

December21st January 1st December 1st January

547 The sun is at the first point of Aries on the

celestial sphere at approximately: 21st March 21st June21st

September

21st

December

548 The times of sunrise and sunset are

tabulated in the Nautical Almanac. These

times are:The LMT

when the

upper limb is

on the visible

horizon for an

observer at

sea level

The LAT when

the upper

limb is on the

visible horizon

for an

observer at

sea level

The LMT

when the

lower limb is

on the visible

horizon for an

observer at

sea level

The LAT when

the lower limb

is on the

visible horizon

for an

observer at

sea level

549 The two unique properties of a free

gyroscope are: precession

and

gyroscopic

inertia

torque and

rigidity in

space

gyroscopic

inertia and

spin

spin and

precession

550 The unit which sends returning target

echoes to the receiver is the: scanner unitpower supply

unit

transmitter

unitdisplay unit

551 The value of the "equation of time" is:

between zero

and about 17

minutes

between zero

and about 30

minutes

dependent

upon the

observer's

longitude

dependent

upon the

observer's

latitude

552 The vertex of a great circle is the point at

which it: comes

nearest to the

pole

passes

through the

Greenwhich

meridian

cuts the

equator

runs

north/south

553 The vertical force of the earth's magnetism:

does not

cause

deviation of

the magnetic

compass

influences the

values of

variation

causes

deviation of

the magnetic

compass

can be used to

calculate the

value of

variation

554 The vessel is on a steady bearing and the

range is reducing. What action would you

take?sound two

short blasts

and alter

course to port

sound one

short blast

and alter

course to

starboard

make a

substantial

reduction of

speed

sound five

short and

rapid blasts

and stand on

with caution

555 To an observer at the south pole, at the

beginning of September:

there will be

twilight

throughout

the day

there will be a

period of

twilight for a

few hours

only around

noon

the sun will be

above the

horizon

throughout

the day

the sun will

rise for a short

period around

noon

556 To convert a compass course to a magnetic

course, it is necessary to apply:deviation variation compass error

none of the

other

557 To convert a magnetic course to a true

course, it is necessary to apply:variation deviation compass error

none of the

other

558 Under soundings marked on the chart, the

nature of the sea bottom is also indicated.

What does SH indicate? Shells Corals Soft mud Shingle

559 Variation values change for a particular

place because:

the magnetic

poles are

moving their

positions in

relation to

the

geographic

poles

the angle

between the

magnetic

meridian and

the meridian

at the place

varies

according to

the heading of

the ship

ionospheric

changes cause

the magnetic

poles to move

in a random

fashion

the magnetic

poles are not

in the same

positions as

the

geographic

poles

560 What are sailing directions also known as?

Pilot booksGuide to port

entry

Routeing

charts

Passage

planning

charts

561 What chart should be used when

navigating? The largest

scale chart

onboard for

the area

which is

properly

corrected

Any chart

which shows

the area

which the

vessel is

passing

through

The largest

scale chart on

board for the

concerned

area

The chart

which covers

the largest

part of the

passage

562 What charts are used for coasting, pilotage

waters and plotting waypoints? Large scale Small scale Routeing Instructional

563 What charts are used for plotting Great

Circle course?Gnomonic Instructional Routeing

Passage

planning

564 What do you call the error in the observed

altitude of the sun, which results from the

observer being on the surface of the earth

not at its center?Parallax

Semi-

diameterDip Refraction

565 What is "side error" on a marine sextant?

When the

horizon

glass/mirror

is not

perpendicular

to the plane

of the sextant

When the

telescope

collar is not

perpendicular

to the plane

of the sextant

When the

index mirror is

not

perpendicular

to the plane

of the sextant

When the

index mirror

and the

horizon

glass/minor

are not

parallel at all

times

566 What is mean by "retentive magnetism"

with regard to a ship's magnetic compass?

The ship

retains

induced

magnetism if

the ship has

been heading

in the same

direction for a

considerable

period

The compass

needle retains

induced

magnetism if

the ship has

been heading

in the same

direction for a

considerable

period

The compass

retains a

"magnetic

memory" of

the previous

course when

the ship

changes to a

new one

The correctors

retain

magnetism

from

magnetic

objects placed

near to the

compass

567 What is the "error or collimation" on a

marine sextant?When the

telescope is

not parallel to

the plane of

the sextant

When the

telescope

and/or

mirrors causes

distortion

When the arc

has been

incorrectly

graduated or

has been

damaged

When the

vernier or

micrometer

scals are

incorrect

568 What is the "error of perpendicularity" on a

marine sextant?When the

index mirror

is not

perpendicular

to the plane

of the sextant

When the

telescope

collars is not

perpendicular

to the plane

of the sextant

When the

index mirror

and the

horizon

glass/minor

are not

parallel at all

times

When the

horizon

glass/mirror is

not

perpendicular

to the plane

of the sextant

569 What is the angle between the ecliptic and

equinoctial? 23.5° 0° 66.5° 90°

570 What is the definition of the "geographic

range" of a light?The maximum

distance at

which a light

may be seen,

limited only

by the

curvature of

the earth, in

perfect

visibility

The maximum

distance at

which a light

may be seen

under existing

visibility

conditions

The maximum

distance at

which an

observer at

sea level can

observe a

light under

standard

meteorologica

l conditions

The maximum

distance at

which a light

may be seen,

limited only

by its

candlepower

571 What is the definition of the "luminous

range" of a light?

The maximum

distance at

which a light

may be seen,

under

prevailing

meteorologic

al conditions

The maximum

distance at

which a light

may be seen

in clear

weather

The maximum

theoretical

range of

visibility of a

light

The maximum

distance at

which an

observer at

sea level can

observe the

light standard

meteorologica

l conditions

572 What is the definition of the "nominal"

range of a light?

the maximum

distance at

which a light

may be seen

in clear

weather

the maximum

theoretical

range of

visibility of a

light

determined

from the

heights of

observer and

the light

the maximum

distance at

which a light

may be seen,

under

prevailing

meteorologica

l conditions

the maximum

distance at

which an

observer at

sea level can

observe the

light under

limited

meteorologica

l conditions

573 What is the east-west distance between

two points called? Departure D'long D'lat DMP

574 What is the line roughly following the

180th meridian called?The date line

The

Greenwich

meridian

The equator A rhumb line

575 What is the main advantage of a liquid

compass over a dry card compass?

it is steadier

than a dry

card compass

it is more

easily

adjusted than

a dry card

compass

it has a slower

period of

oscillation

than a dry

card compass

it is more

accurate than

a dry card

compass

576 What is the main purpose of frequently

recording deviation of the ship's magnetic

compass in a log or compass deviation

book?

To enable

unforeseen

changes to

deviation to

be quickly

detected

To provide

evidence in

the event of a

collision,

grounding or

other such

incident

To provide for

accurate

planning of

courses in

passage plans

To enable the

compass

adjusted to

calculate the

sizes and

locations of

the correctors

577 What is the meaning of the symbol CL on a

navigational chart? Clay Coral Cloud Cill

578 What is the usual datum for a port or area

from which predicted tidal heights are

calculated?The lowest

astronomical

tide level

The mean low

water springs

level

The average

low water

level in that

locality

The lowest

recorded

water level in

that locality

579 What is the vertical distance on a given day

between the water surface at high and low

water called? Range of tides Height of tide

Highest

astronomical

tide

Lowest

astronomical

tide

580 What is true of the tide at an amphidromic

point? The-tidal

range is zero

Only spring

tides occur

Co-range lines

converge

The tidal

range is

maximum

581 What would you adjust in an attempt to

eliminate index error of a sextant? The horizon

glassThe telescope

The tangent

screwcalibration

582 What would you say about a ship which is

course unstable? When you

apply rudder,

she will

continue to

turn long

after the

rudder is

returned to

amidships

She will

receive large

rudder angles

to maintain

course

When you put

rudder

amidships,

she will

quickly return

to straight

course

When you

apply rudder,

she will take

time before

answering

583 When a force is applied at right angles to

the spin axis of free gyroscope, the axis

moves:at 90° to the

torque in the

direction of

the spin

at 180° to the

torque in the

opposite

direction to

the spin

at 90° to the

torque in the

opposite

direction to

the spin

at 90° to the

torque in the

direction of

the spin

584 When soft iron is induced by the earth's

magnetism:there is said

to be a red

pole at the

end directed

towards the

north

There are no

poles to

consider as

the

magnetism

dies when the

induction

ceases

there is said

to be a blue

pole at the

end directed

towards the

north

the poles are

said to be

distributed

throughout

the iron

585 When the index mirror and the horizon

mirror of the sextant are parallel, the

sextant should read: 0° 60° 90° 120°

586 When the moon is in opposition, the tide is:

a spring tide a neap tide a flood tide an ebb tide

587 When the moon is in quadrature, the tide

is: a neap tide a spring tide an ebb tide a flood tide

588 When the sun and moon are in near

conjunction or opposition the tides are

called: spring diurnal neap full

589 When tides are classes as being diurnal,

there will be: one high

water and

one low

water each

tidal day

two high

water and two

low waters

each tiday day

two high

waters and

one low water

each tidal day

one high

water and two

low waters

each tidal day

590 When using a buoy as an aid to navigation,

which of the following should always be

considered?

The buoy may

not be in its

charted

position

If the light is

showing its

correct

characteristic

it is its right

position

If no radio

navigation

warming has

been issued

concerning

the buoy, it

can be

assumed to be

in its correct

position

The buoy is

nearly always

well anchored

and can be

considered to

be in its

charted

position

591 When using great circle sailing the saving in

distance is the most when: the course is E-

W, nearer to

the poles

at the equatorthe course is

N-S

the course is

one of the

inter-cardinal

headings

592 A ship steers the following courses and

distances: 080°T for 42 miles; 201°T for 36

miles 145°T for 27 miles; 045°T for 45

miles Calculate (using plane sailing) the

course and distance made:

099°T 81

miles081°T 81 miles

099°T 150

miles

009°T 150

miles

593 A ship steers the following courses and

distances: 180°T for 22 miles; 290°T

for 73 miles 159°T for

68 miles; 270°T for 16 miles

Calculate (using plane sailing) the course

and distance made:

225°T 85

miles

225°T 179

miles315°T 85 miles

315°T 179

miles

594 A vessel in initial position 60°00; 04°00' E

steam due west for 240 miles. Calculate the

new longtitude to the nearest minute. 4°00'W 8°00'W 2°00'E 12°00'W

595 A vessel in latitudes 54°23'S longtitude

16°18'E steams on a course of 270°T until

in longtitude 8°43'W. How far as she

steamed to ty nearest mile?874 miles 472 miles 435 miles 913 miles

596 Given that the true altitude is 46°20.2'

calculate the True Zenith Distance 43°39.8' 72°16.0' 34°06.4' 46°20.2'

597 Given that true altitude is 57°24.9' calculate

the True Zenith Distance: 32°35.1' 57°24.9' 46°20.2' 55°53.6'

598 Given that true altitude is 61°47.9' calculate

the True Zenith Distance: 28°12.1' 46°20.2' 43°39.8' 32°35.1'

599 Given that the True Zenith Distance is

17°44.0' and the Calculated Zenith Distance

is 17°46.0' find and name the intercept ,

with respect to the direction of the

observed body:

2.8 Towards 4.0' away 2.0' away 4.0' Towards

600 Given the True Zenith Distance is 36°22.0

and that Calculated Zenith Distance is

36°24.8 find and name the intercept,with

respect to the direction of the observed

body.

2.8' Towards 4.0' away 2.8' away 4.0'Towards

601 Given that the True Zenith Distance is 64

°44.0' and that the Calculated Zenith

Distance is 64°53.0', find and name the

intercept, with respect to the direction of

the observed body

9.0' Towards 11.0' away 2.8' Towards 9.0' away

602 If a ship is in 150°E longtitude and the

equation of time is +6 minutes,what is the

GMT of noon at the ship? 0206 0154 2154 2205

603 If a ship is in 30°W longtitude and the

equation of times is -4 minutes,what is the


604 If a ship is in 90°E longtitude at the

equation of time is -4 minutes, what is the


605 If the distance between two consecutive

isobars (drawn at intervals of 4mb) is

found to be in 100 n.miles and the latitude

is 50 deg, what is the geostrophic wind

speed?

30 kts 15 kts 60 kts 120 kts

606 If the GHA of the sun is 173° and LHA IS

358°,what is the longtitude? 175°W 5°W 175°E 5°E

607 If the GHA of the sun is 315° and the LHA

is 36°,what is the longtitude? 81°E 59°W 9°E 121°W

608 Leading lights are in line bearing 126°T. If

the gyro error is 2°low, what would the

gyro bearing of the leading lights be? 124° 126° 128°

It depend

upon the

heading of the

ship

609 Steaming South at 10 knots, you estimate

the wind speed from the surface as 15

knots. Smoke from the funnel is going away

to port directly to abeam. What is the

approximate true direction of the wind?WNW NNW SSW WSW

610 The best position fix is obtained when the

bearings of two objects are: 90 degrees

apart

45 degrees

apart

180 degrees

apart

135 degrees

apart

611 The gyro course is 165° and the gyro error

is 3° low. What is the true course?

168° 165° 162°

It could be

any of the

other options

612 The gyro course is 332° and the gyro error

is 2° high. What is the true course?

330° 332° 334°

It could be

any of the

other options

613 The index error of a marine sextant read as

48° 25'.3 is known to be 5' on the arc. Find

the observed altitude. 48° 20.3' 48° 30.3' 48° 25.3' 48° 35.3'

614 The index error of a marine sextant reads

as 35° 25'.3 is known to be 2' off the arc.

Find the observed altitude. 35° 27.3 35° 25.3 35° 23.3' 35° 29.3'

615 The true altitude of Arcturus is 42° 28'.4.

Find the true zenith distance. 47° 31.6' 57° 31.6' 47° 36.1' 46° 31.6'

616 The true altitude of Canopus is 64° 52'.4.

Find the true zenith distance. 25° 07.6' 15° 07.6' 25° 06.7' 15° 06.7'

617 The true altitude of the suns lower limb is

74° 45'.4. Find the true zenith distance.15° 14.6' 16° 14.6' 25° 14.6' 14° 14.6'

618 The true zenith distance of the sun when

on the observer's meridian bearing North is

46° 23.9' and the declination is 9° 15'.0 S.

Calculate the observer's latitude. 55° 38.9' S 37° 0.80' S 37° 08.9' N 64° 23.2' S



6° 57.4' and the declination is 21° 28'.4 S.

Calculate the observer's latitude. 28° 25.8' S 14° 31.0' N 28° 25.8' N 14° 31.0' S


on the observer's meridian bearing South is

6° 57.4' and the declination is 14° 36.2' S.

Calculate the observer's latitude. 07° 33.8' S 21° 33.6' N 07° 38.8' N 21° 33.6' S

621 The correction of atmospheric refraction as

applied to the observed altitude of a body:

decreases

with altitude

depends only

a atmospheric

conditions

and is

independent

of altitude

increases with

altitude

is negligible

and can be

ignored



15° 23.6' and the declination is 22° 19.5' N.

Calculate the observer's latitude.37° 43.1' N 6° 55.9' S 17° 43.1' N 6° 55.9' N



15° and the declination is 22° N. Calculate

the observer's latitude.37° N 37° S 7° S 7° N



6° and the declination is 16° N. Calculate

the observer's latitude.10° N 10° S 22° N 22° S



39° 14.3' and the declination is 17° 22'.1.

Calculate the observer's latitude.21° 52.2' S 24° 52.2' S 56° 36.4' N 56° 36.4' S



6° 57.4' and the declination is 16° 25.4' N.

Calculate the observer's latitude.09° 28.0' N 09° 28.0' S 23° 22.8' N 23° 22.8' S



31° 30' and the declination is 16° 25.4' N.

Calculate the observer's latitude.47° 55.4' S 16° 25.4' N 15° 04.6' S 15° 04.6' N

628 The true zenith distance of the Sun when


54° 28.6' and the declination is 4° 28.4' S.

Calculate the observer's latitude.50° 00.2' N 58° 57.0' N 50° 00.0' N 58° 28.6' N



6° and the declination is 21° S. Calculate

the observer's latitude.27° S 15° N 27° N 15° S


the observer's meridian bearing South is

54° and the declination is 4° S. Calculate

the observer's latitude.50° N 58° N 50° S 58° S

631 To an observer in longitude 164° E, the LHA

of the sun is 26°. What is the GHA of the

sun? 222° 170° 190° 138°

632 To an observer in longitude 172° E, the LHA

of a star is 315°. If the SHA of the star is

036°, what is the GHA of Aries? 107° 091° 127° 143°

633 To an observer in longitude 65° W, the LHA

of a star is 48°. If the SHA of the star is

217°, what is the GHA of Aries? 256° 160° 104° 304°

634 To an observer in longitude 75° W, the LHA

of the sun is 327°. What is the GHA of the

sun? 042° 108° 252° 318°

635 A vessel is under pilotage approaching a

European port. Who is responsible for the

safe navigation of the vessel?

The master

and duty

officers

The pilotThe traffic

controller

The pilot and

the master

together

636 After a collision on the high seas, the

Master of a ship sailing under its flag has

several legal duties? Which answer does

not belong in the list?

To inform the

other ship of

the name of

the ship's

agents at the

nest port of

call

To inform the

other ship of

the name of

his own ship

To inform the

other ship of

the name port

of registry and

the nearest

port a which

the ship will

call

To render

assistance to

the other

ship, her crew

and her

passengers

637 An OOW, on duty in coastal waters, notices

that he becomes too busy to be able to

take a fix. What should he do? Call the

master to

assist him

Leave the fix

until later

Ask the

lookout to

check for

other vessels

while he takes

a fix

Slow down

the vessel

638 At the commencement of a sea voyage the

master, a pilot, the oow and two ratings are

present on the bridge, who is in charge?the master the pilot

always the

officer with

the longest

sea

experience

depends on

port

authority's

decision

639 At the commencement of sea voyage the

Master , a Pilot, the OOW and 2 ratings are

present on the bridge. Who is in charge?

Always the

Master

The Master

can designate

either the

Pilot or the

OOW to be in

charge

Always the

pilot

whenever he

is on board

Either the

Pilot or the

Master in

acordance

with the

owner's

instruction

640 The captain of a vessel has 2 years of

experience as a captain and the pilot

directing the navigation has 20 years of

experience. Who is in charge? the master The Pilot

always the

officer with

the longest

sea

experience

depends on

port

authority's

decision

641 The correct order to follow when planning

a passage is: appraise,

plan, monitor,

execute

plan,

appraise,

monitor,

execute

plan, monitor,

appraise,

execute

plan, monitor,

execute,

appraise

642 The OOW has, during the pre-departure

check of the bridge equipment, found an

error in the weather facsimile. What

should he do?

Advise the

master as

soon as

possible

before the

vessel's

departure

Advise the

master after

the vessel has

departed

Call the

attention of

the 2nd

Engineer on

the fault

Record the

error in the

log book

643 The OOW on duty in coastal waters, notices

that he becomes too busy to be able to

take a fix, what should he do? call the

master to

assist him

leave the fix

until later

ask the

lookout to

check for

other vessels

while he takes

a fix

slow down

the vessel

644 The pilot gives the helmsman an order

which the OOW believe to be incorrect.

What should he do?

Ask the pilot

to clarify the

reason for the

order. If still

in doubt he

should

consult the

master and

take action if

the master is

not present

The pilot is in

control of the

vessel so he

cannot

question the

action of the

pilot

Record in the

log book

Keep quiet in

order not to

disturb the

pilot

645 What is the duty of a pilot?

To direct the

navigation of

the ship in a

certain area

To assist in

planning the

sea voyage

To be

responsible

for the

vessel's

navigation as

long as he is

on board

To relieve the

OOW on his

duty to

monitor the

navigation of

the ship

646 When at anchor, what should the OOW do

if the vessel appears to be dragging her

anchor? Call the mater

at once

Ask the

bosom to

check the

anchor

Ask the chief

engineer to

start the

engine

Any of the

other options

647 When may positions marked on the

navigation chart be erased?At the end of

the voyage

Once the

vessel is on

the next chart

After the day

has elapsed

Once the

vessel is on

the next

course

648 When may the OOW on the bridge

maneuver the engines?Whenever he

needs to

Only on

orders from

the master

Only after

informing the

master

When

approaching

port

649 When must a passage plan be prepared?

Before the

voyage

commences

Gradually

during a sea

voyage

Whenever

requested by

a pilot

Any of the

other options

650 The times of civil twilight are tabulated in

the Nautical Almanac. These times are: The LMT

when the

sun's center

reaches 6°

below the

visible

horizon

before sunrise

and after

sunset

The LMT

when the

sun's center

reaches 12°

below the

visible horizon

before sunrise

and after

sunset

The LAT when

the sun's

center

reaches 12°

below the

visible horizon

before sunrise

and after

sunset

The LAT when

the sun's

center

reaches 6°

below the

visible horizon

sunrise and

after sunset

f1 - wes (oic) 072310 (area - a)

Documents

great circle track

great circle crosses

time is12m 00s

time is16m 00s

great circle sailing

panama canal transit

depature made good

longest sea experience