1. The description "Racon" beside an illustration on a 1. The description "Racon" beside an illustration on a chart would mean a _____.chart would mean a _____.

A. radar conspicuous beaconA. radar conspicuous beacon B. circular radiobeacon B. circular radiobeacon C. radar transponder beaconC. radar transponder beacon D. radar calibration beaconD. radar calibration beacon 2. When navigating using DGPS (Differential Global 2. When navigating using DGPS (Differential Global

Positioning System) you may expect your position to Positioning System) you may expect your position to be accurate to within a radius of _________.be accurate to within a radius of _________.

A. 10 meters A. 10 meters B. 20 metersB. 20 meters C. 50 metersC. 50 meters D. 100 metersD. 100 meters

3. When using GPS, how many position lines are 3. When using GPS, how many position lines are required for a 3D (dimensional) fix that takes into required for a 3D (dimensional) fix that takes into account altitude?account altitude?

A. 1 A. 1 B. 2B. 2 C. 3C. 3 D. 4D. 4 4. As a vessel changes course to starboard, the 4. As a vessel changes course to starboard, the

compass card in a magnetic compass remains compass card in a magnetic compass remains A. aligned with compass northA. aligned with compass north B. also turns to starboardB. also turns to starboard C. first turns to starboard then counterclockwise to C. first turns to starboard then counterclockwise to

portport D. turns counterclockwise to portD. turns counterclockwise to port

5. Which of the following is the approximate 5. Which of the following is the approximate time a radar pulse travel out to and the echo time a radar pulse travel out to and the echo return from a target at 24 miles?return from a target at 24 miles?

A. 400 microsec.A. 400 microsec.B. 200 microsec.B. 200 microsec.C. 300 microsec.C. 300 microsec.D. 100 microsec.D. 100 microsec.6. When facing into the wind in the Northern 6. When facing into the wind in the Northern

Hemisphere the center of low pressure lies:Hemisphere the center of low pressure lies:A. directly in front of you A. directly in front of you B. directly behind you B. directly behind you C. to your left and behind youC. to your left and behind youD. to your right and behind youD. to your right and behind you

1mile = 1852 mtrs.VEL.OF RADAR WAVE = 300 MTRS. PER MILLION OF SEC.(MICROSEC.)48 X 1852 MTRS 300 MTRS./MICROSEC. = 296.3 MICROSEC

7. You are enroute to assist vessel A. Vessel A is 7. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233° T, and bears underway at 4.5 knots on course 233° T, and bears 264° T, 68 miles from you. What is the time to 264° T, 68 miles from you. What is the time to intercept if you make 13 Knots?intercept if you make 13 Knots?

A. 6h 31m A. 6h 31m B. 6h 47mB. 6h 47m C. 7h 03mC. 7h 03m D. 7h 34mD. 7h 34m +

+Ø= 264˚

D= 68M

T/C

= 23

3˚

SPD

.=4.

5 KT

S

O.S.SPD.=13 KTS.

O.S. CO. =

?

ANGLE A = BRG.OF O.S. FR.TGT. – TGT.CO. = 84 – 233 = 149˚

O.S.

TGT. AA

B

C

SIN ANGLE C = TGT.SPD X SIN ANGLE A O.S.SPD. = 4.5 X SIN 149 13 = 10.27˚

TRUE CO. TO STEER = TGT.BRG. +/- ANGLE C = 264 – 10.27 = 253.73˚

ANGLE B = 180 – (ANGLE A + ANGLE C) = 180 – (149 + 10.27) = 20.73

RUNNING TIME TO INTERCEPT = TGT.RANGE X SIN ANGLE A SIN ANGLE B X O.S. SPD. = 68 X SIN 149 SIN 20.73 X 13 = 7.61 HRS. = 7 HRS. 37 MINS.

8. As your vessel is heading southward along 8. As your vessel is heading southward along the east coast of the United States, you the east coast of the United States, you encounter a buoy showing a red flashing light. encounter a buoy showing a red flashing light. How should you pass this buoy?How should you pass this buoy?

A. Pass it about 50 yards off on either side.A. Pass it about 50 yards off on either side.B. Leave it to your starboard.B. Leave it to your starboard.C. Leave it to your port.C. Leave it to your port.D. Pass it well clear on either side.D. Pass it well clear on either side.

9. Which statement about a simple conic chart 9. Which statement about a simple conic chart projection is TRUE?projection is TRUE?

A. It is an equal-area projection.A. It is an equal-area projection.B. It is a conformal projection.B. It is a conformal projection.C. Meridians appear as curved lines.C. Meridians appear as curved lines.D. The scale is correct along any meridian.D. The scale is correct along any meridian.10. Your dead reckoning position should be 10. Your dead reckoning position should be

plotted _______________.plotted _______________.A. whenever an estimated position is plottedA. whenever an estimated position is plottedB. when it agrees with your loran positionB. when it agrees with your loran positionC. when coming on or going off soundingsC. when coming on or going off soundingsD. at least every hour on the hour in the open D. at least every hour on the hour in the open

waters of the seawaters of the sea

11. What causes the error of collimation with regards 11. What causes the error of collimation with regards to the four adjustments to a sextant?to the four adjustments to a sextant?

A. Telescope not parallel to the frameA. Telescope not parallel to the frame B. Personal error B. Personal error C. The frame and index mirror not perpendicularC. The frame and index mirror not perpendicular D. The frame and horizon glass not perpendicularD. The frame and horizon glass not perpendicular 12. The Sun at a maximum declination north would be 12. The Sun at a maximum declination north would be

approximately at ______________.approximately at ______________. A. aphelion A. aphelion B. perihelionB. perihelion C. autumnal equinoxC. autumnal equinox D. first point of AriesD. first point of Aries

13. If an observer in the Northern Hemisphere faces 13. If an observer in the Northern Hemisphere faces the surface wind, the center of low pressure is to his:the surface wind, the center of low pressure is to his:

A. left, slightly behind him A. left, slightly behind him B. right, slightly behind himB. right, slightly behind him C. left, slightly in front of himC. left, slightly in front of him D. right, slightly in front of himD. right, slightly in front of him 14. What will be the time after 0800 EST (ZD +5) that 14. What will be the time after 0800 EST (ZD +5) that

the height of the tide at South Freeport, ME, will be 6.0 the height of the tide at South Freeport, ME, will be 6.0 feet (1.8 meters) on 7 November 1983?feet (1.8 meters) on 7 November 1983?

A. 0936 A. 0936 B. 0942B. 0942 C. 0951C. 0951 D. 1001D. 1001

Inc.question

15. A great circle crosses the equator at 134° E. It will 15. A great circle crosses the equator at 134° E. It will also cross the equator at what other longitude?also cross the equator at what other longitude?

A. 46° WA. 46° W B. 124° W B. 124° W C. 134° W C. 134° W D. 34° ED. 34° E 16. You are underway on course 050‚ T and your 16. You are underway on course 050‚ T and your

maximum speed is 11 knots. The eye of a hurricane maximum speed is 11 knots. The eye of a hurricane bears 070‚ T, 80 miles from your position. The bears 070‚ T, 80 miles from your position. The hurricane is moving towards 270‚ T at 19 knots. What hurricane is moving towards 270‚ T at 19 knots. What course should you steer at 11 knots to have the course should you steer at 11 knots to have the maximum CPA?maximum CPA?

A. 250A. 250 B. 234B. 234 C. 227C. 227 D. 215D. 215

(O.S.SPD.) 11 = .0578 INV.SIN = 35.376(HUR.SPD) 19 90 – 35.376 = 54.623(HUR.CO.) 270 – 54.376 = 215˚

17. Prevailing winds between 30° N and 60° N 17. Prevailing winds between 30° N and 60° N latitude are from the __________________.latitude are from the __________________.

A. north A. north B. southB. southC. eastC. eastD. westD. west18. Which buoy may be odd numbered? 18. Which buoy may be odd numbered? A. Mid-channel buoy A. Mid-channel buoy B. Unlighted nun buoy B. Unlighted nun buoy C. Lighted green buoy C. Lighted green buoy D. All of the above D. All of the above

19. You would find the variation on a polyconic 19. You would find the variation on a polyconic projection chart __________.projection chart __________.

A. on the compass rose A. on the compass rose B. on the mileage scale B. on the mileage scale C. written on the chart titleC. written on the chart titleD. at each line of longitudeD. at each line of longitude20. There are seven sources of error in the 20. There are seven sources of error in the

marine sextant. Of the four errors listed, which marine sextant. Of the four errors listed, which one is adjustable?one is adjustable?

A. Error of collimation A. Error of collimation B. Prismatic error B. Prismatic error C. Graduation errorC. Graduation errorD. Centering errorD. Centering error

21. If the Sun's observed altitude is 47°50', the zenith 21. If the Sun's observed altitude is 47°50', the zenith distance is _____.distance is _____.

A. 42°10' A. 42°10' B. 42°50'B. 42°50' C. 47°50'C. 47°50' D. 132°10'D. 132°10' 22. According to Buys Ballot's law, when an observer 22. According to Buys Ballot's law, when an observer

in the Northern Hemisphere experiences a northeast in the Northern Hemisphere experiences a northeast wind the center of low pressure is located to the wind the center of low pressure is located to the __________.__________.

A. northeast A. northeast B. west-southwestB. west-southwest C. northwest C. northwest D. south-southeastD. south-southeast

90Ho = 47˚ 50’ZX = 42˚ 10’

23. A navigator fixing a vessel's position by radar 23. A navigator fixing a vessel's position by radar _________._________.

A. should never use radar bearingsA. should never use radar bearings B. can use radar information from one object to fix the B. can use radar information from one object to fix the

positionposition C. should only use radar bearings when the range C. should only use radar bearings when the range

exceeds the distance to the horizonexceeds the distance to the horizon D. must use information from targets forward of the D. must use information from targets forward of the

beambeam 24. The steady current circling the globe at about 60° 24. The steady current circling the globe at about 60°

S is the __________.S is the __________. A. Prevailing Westerly A. Prevailing Westerly B. Sub-Polar Flow B. Sub-Polar Flow C. West Wind Drift C. West Wind Drift D. Humboldt CurrentD. Humboldt Current

25. Prevailing winds between 30° N and 60° N 25. Prevailing winds between 30° N and 60° N latitude are from the ______.latitude are from the ______.

A. east A. east B. west B. west C. northC. northD. southD. south26. A nun buoy will ________. 26. A nun buoy will ________. A. be green in color A. be green in color B. have an even number B. have an even number C. be left to port when entering from seawardC. be left to port when entering from seawardD. be cylindrical in shapeD. be cylindrical in shape

27. Which would you consult for information 27. Which would you consult for information about the general current circulation in the about the general current circulation in the North Atlantic Ocean?North Atlantic Ocean?

A. Pilot chart A. Pilot chart B. Coast PilotB. Coast PilotC. Current TableC. Current TableD. Climatological AtlasD. Climatological Atlas28. Which is a nonadjustable error of the 28. Which is a nonadjustable error of the

sextant? sextant? A. Error of perpendicularityA. Error of perpendicularityB. Side error B. Side error C. Error of collimationC. Error of collimationD. Centering errorD. Centering error

29. The difference of latitude (l) between the 29. The difference of latitude (l) between the geographic position (GP) of a celestial body and your geographic position (GP) of a celestial body and your position, at the time of upper transit, is represented by position, at the time of upper transit, is represented by _____._____.

A. colatitude A. colatitude B. codistanceB. codistance C. zenith distance C. zenith distance D. altitudeD. altitude 30. The edge of a hurricane has overtaken your vessel 30. The edge of a hurricane has overtaken your vessel

in the Gulf of Mexico, and the northwest wind of a few in the Gulf of Mexico, and the northwest wind of a few hours ago has shifted to the west. This is an indication hours ago has shifted to the west. This is an indication that you are located in the __________.that you are located in the __________.

A. navigable semicircle A. navigable semicircle B. dangerous semicircle B. dangerous semicircle C. low pressure areaC. low pressure area D. eye of the stormD. eye of the storm

31. During the winter months, the southeast trade 31. During the winter months, the southeast trade winds are ________.winds are ________.

A. stronger than during the summer monthsA. stronger than during the summer months B. weaker than during the summer monthsB. weaker than during the summer months C. drier than during the summer monthsC. drier than during the summer months D. wetter than during the summer monthsD. wetter than during the summer months 32. When outbound from a U.S. port, a buoy 32. When outbound from a U.S. port, a buoy

displaying a flashing red light indicates:displaying a flashing red light indicates: A. a junction with the preferred channel to the leftA. a junction with the preferred channel to the left B. a sharp turn in the channel to the rightB. a sharp turn in the channel to the right C. the port side of the channelC. the port side of the channel D. a wreck to be left on the vessel's starboard sideD. a wreck to be left on the vessel's starboard side

33. A pilot chart does NOT contain information 33. A pilot chart does NOT contain information about ________.about ________.

A. average wind conditionsA. average wind conditionsB. tidal currents B. tidal currents C. magnetic variationC. magnetic variationD. average limits of field iceD. average limits of field ice34. An instrument designed to maintain a 34. An instrument designed to maintain a

continuous record of atmospheric pressure is continuous record of atmospheric pressure is a(n):a(n):

A. mercurial barometer A. mercurial barometer B. aneroid barometer B. aneroid barometer C. barograph C. barograph D. thermographD. thermograph

35. If the Sun's observed altitude is 27°12', 35. If the Sun's observed altitude is 27°12', the zenith distance is _____.the zenith distance is _____.

A. 62°48' A. 62°48' B. 27°12'B. 27°12'C. 152°48'C. 152°48'D. 43°12'D. 43°12'

90Ho = 27˚ 12’ZX = 62˚ 48’

36. Your vessel is on course 150° T, speed 17 knots. 36. Your vessel is on course 150° T, speed 17 knots. The apparent wind is from 40° off the starboard bow, The apparent wind is from 40° off the starboard bow, speed 15 knots. What is the speed of the true wind?speed 15 knots. What is the speed of the true wind?

A. 9.0 knots A. 9.0 knots B. 10.2 knotsB. 10.2 knots C. 11.0 knots C. 11.0 knots D. 12.0 knotsD. 12.0 knots

er = VSL.CO. / SPDew = TRUE WIND / SPDrw = APP.WIND / SPD

+

17

e

r

w

1540

A

B

C

a

b

cb2 = a2 + c2 – 2ac COS.Ab = √(15)2 + (17)2 – 2(15)(17)COS.40 = 11.02

37. The velocity of the apparent wind can be less 37. The velocity of the apparent wind can be less than the true wind and from the same direction, if than the true wind and from the same direction, if certain conditions are present. One condition is that certain conditions are present. One condition is that the ___________.the ___________.

A. ship's speed is more than the true wind velocityA. ship's speed is more than the true wind velocity B. true wind is from dead asternB. true wind is from dead astern C. true wind is on the beamC. true wind is on the beam D. true wind is from dead aheadD. true wind is from dead ahead 38. Where will you find information about the 38. Where will you find information about the

duration of slack water?duration of slack water? A. American Practical NavigatorA. American Practical Navigator B. Sailing Directions B. Sailing Directions C. Tide TablesC. Tide Tables D. Tidal Current TablesD. Tidal Current Tables

39. Information about the currents for the Pacific 39. Information about the currents for the Pacific Coast of the U. S. are found in the _____.Coast of the U. S. are found in the _____.

A. Ocean Current Tables A. Ocean Current Tables B. Nautical Almanac B. Nautical Almanac C. Tide TablesC. Tide Tables D. Tidal Current TablesD. Tidal Current Tables 40. You are steaming in a westerly direction along the 40. You are steaming in a westerly direction along the

Gulf Coast. You see ahead of you a lighted buoy Gulf Coast. You see ahead of you a lighted buoy showing a red isophase light. Which action should you showing a red isophase light. Which action should you take?take?

A. Alter course to port and leave the buoy to starboard.A. Alter course to port and leave the buoy to starboard. B. Alter course to starboard and leave the buoy to port.B. Alter course to starboard and leave the buoy to port. C. Alter course and leave the buoy near by on either C. Alter course and leave the buoy near by on either

side.side. D. Alter course and pass the buoy well-off on either D. Alter course and pass the buoy well-off on either

side. side.

41. All of the following can be found on a Pilot 41. All of the following can be found on a Pilot Chart EXCEPT information concerning the:Chart EXCEPT information concerning the:

A. percentage of frequency of wave heightsA. percentage of frequency of wave heightsB. percentage of poor visibility conditionsB. percentage of poor visibility conditionsC. sea surface temperaturesC. sea surface temperaturesD. amounts of precipitationD. amounts of precipitation

42. Your position is LAT 20°00' N, LONG 45°00' W 42. Your position is LAT 20°00' N, LONG 45°00' W when you take a radio bearing on a ship in distress in when you take a radio bearing on a ship in distress in LAT 15°00' N, LONG40°00' W. Your RDF bearing LAT 15°00' N, LONG40°00' W. Your RDF bearing corrected for calibration error is 135.6° T. What is the corrected for calibration error is 135.6° T. What is the rhumb line course to rendezvous with the vessel in rhumb line course to rendezvous with the vessel in distress.distress.

A. 134.9° T A. 134.9° T B. 135.6° TB. 135.6° T C. 136.2° T C. 136.2° T D. 136.9° TD. 136.9° T

LAT1 = 20˚00 NLAT2 = 15˚00 NDLAT = 5˚00 S

-1217.25- 904.50 312.75

LONG.1 = 45˚ 00 WLONG.2 = 40˚ 00 WDLO = 5˚ 00 E 300

Tan Co. = DLO / DMP = 300 / 312.75 = S 43.8 E = 136.2

43. An aneroid barometer is an instrument ________.43. An aneroid barometer is an instrument ________. A. used to measure the speed of wind A. used to measure the speed of wind B. in which the pressure of the air is measuredB. in which the pressure of the air is measured C. that tells which direction a storm is coming fromC. that tells which direction a storm is coming from D. used to measure the height of wavesD. used to measure the height of waves 44. At upper transit, if the zenith distance is 34°, the 44. At upper transit, if the zenith distance is 34°, the

geographical distance from the observer to a body's geographical distance from the observer to a body's GP is _____.GP is _____.

A. 510 miles A. 510 miles B. 1220 milesB. 1220 miles C. 2040 miles C. 2040 miles D. 2260 milesD. 2260 miles

34˚ X 60 =2040

45. Your vessel is on course 135° T, speed 18 knots. 45. Your vessel is on course 135° T, speed 18 knots. From the appearance of the sea you estimate the From the appearance of the sea you estimate the speed of the true wind as 24.5 knots. The apparent speed of the true wind as 24.5 knots. The apparent wind is 40° on the starboard bow. Determine the wind is 40° on the starboard bow. Determine the speed of the apparent wind.speed of the apparent wind.

A. 24.2 knots A. 24.2 knots B. 28.4 knotsB. 28.4 knots C. 32.2 knotsC. 32.2 knots D. 36.0 knotsD. 36.0 knots

+e

r

w

24.5

18

A

B

C

a

b

c 40

er = VSL.CO. / SPDew = TRUE WIND / SPDrw = APP.WIND / SPD

b = cSin B Sin CSin C = 18 Sin 40 24.5 = 28.2

a = bSin A Sin Ba = 24.5 Sin 111.8 Sin 40a = 35.4

46. On November 1st the zone time is 1700 EST (ZD 46. On November 1st the zone time is 1700 EST (ZD +5) in LONG 75° W. What is the corresponding zone +5) in LONG 75° W. What is the corresponding zone time and date in LONG 135° E?time and date in LONG 135° E?

A. 0700, November 2nd A. 0700, November 2nd B. 2200, November 1st B. 2200, November 1st C. 0700, November 1st C. 0700, November 1st D. 2200, October 31D. 2200, October 31stst

47. The red sector of a lighthouse that has a 47. The red sector of a lighthouse that has a characteristic of white and red sectors indicates:characteristic of white and red sectors indicates:

A. identity characteristic of the lighthouseA. identity characteristic of the lighthouse B. danger areaB. danger area C. safe areaC. safe area D. limits of navigational channelD. limits of navigational channel

48. The direction of the meridian through the 48. The direction of the meridian through the observer towards the North geographic pole is:observer towards the North geographic pole is:

A. compass northA. compass northB. geographic northB. geographic northC. true northC. true northD. magnetic northD. magnetic north49. Which of the following publications is a 49. Which of the following publications is a

listing of Radio Weather services?listing of Radio Weather services?A. Worldwide marine weather broadcastA. Worldwide marine weather broadcastB. ALRS Vol 3B. ALRS Vol 3C. WMO publication no. 9C. WMO publication no. 9D. All of the aboveD. All of the above

50. What is the position of arrival of a vessel 50. What is the position of arrival of a vessel that steams 4,505 miles on course 135 T from that steams 4,505 miles on course 135 T from Lat 22 deg 35.0N Lon 157 deg 30.0W?Lat 22 deg 35.0N Lon 157 deg 30.0W?

A. Lat 30 deg 30.5’S, Long 162 deg 35.3WA. Lat 30 deg 30.5’S, Long 162 deg 35.3WB. Lat 32 deg 20.5S, Long 104 deg 30.0WB. Lat 32 deg 20.5S, Long 104 deg 30.0WC. Lat 32 deg 20.0S, Long 102 deg 35.3WC. Lat 32 deg 20.0S, Long 102 deg 35.3WD. Lat 30 deg 30.5S, Long 104 deg 30.0WD. Lat 30 deg 30.5S, Long 104 deg 30.0W

Sin 45 = OPP 4505DLO = 53˚05.5

COS 45 = ADJ. 4505 DLAT = 53˚05.5

51. What is the corresponding zone of sunset 51. What is the corresponding zone of sunset on 18 June in Lat 58 deg 10N, Long 172 deg on 18 June in Lat 58 deg 10N, Long 172 deg 50E, the LMT of sunset is 2107H50E, the LMT of sunset is 2107H

A. 20h 38m 20sA. 20h 38m 20sB. 21h 38m 20sB. 21h 38m 20sC. 21h 35m 40sC. 21h 35m 40sD. 20h 40m 10sD. 20h 40m 10s52. The gnomonic projection is based:52. The gnomonic projection is based:A. cone tangent at one parallelA. cone tangent at one parallelB. cylinder target at the equatorB. cylinder target at the equatorC. plane tangent at one pointC. plane tangent at one pointD. infinite series of cones tangent at selected D. infinite series of cones tangent at selected

parallelparallel

LMT = 21 – 07 - 00Λ IN TIME = 11 – 31 – 20 (-) GMT = 09 - 35 - 40 ZD = 12 (+) LZT = 21 – 35 - 40

53. The sextant error of a marine sextant when the 53. The sextant error of a marine sextant when the index arm set to zero and the reflected image in the index arm set to zero and the reflected image in the actual horizon is not in continuous line is:actual horizon is not in continuous line is:

A. prismatic errorA. prismatic error B. graduation errorB. graduation error C. side errorC. side error D. no errorD. no error 54. Where is the diagram viewed by the observer as a 54. Where is the diagram viewed by the observer as a

diagram on the plane of the celestial equator?diagram on the plane of the celestial equator? A. South poleA. South pole B. North poleB. North pole C. EquatorC. Equator D. The zenithD. The zenith

55. The compass that depend upon the earth’s 55. The compass that depend upon the earth’s magnetic for its directive force is:magnetic for its directive force is:

A. duvA. duvB. gyroB. gyroC. pelorusC. pelorusD. magneticD. magnetic56. Which of the following is commonly 56. Which of the following is commonly

associated with fog?associated with fog?A. warm front at nightA. warm front at nightB. cold frontB. cold frontC. low pressure areaC. low pressure areaD. depressionD. depression

57. Determine whether the following statements are 57. Determine whether the following statements are correct.correct.

I. The correction for leeway is always plus when the I. The correction for leeway is always plus when the wind is on the port side of the ship.wind is on the port side of the ship.

II. The estimated leeway angle is always allowed away II. The estimated leeway angle is always allowed away from the wind direction.from the wind direction.

A. I and II are not correct.A. I and II are not correct. B. I and II are correct.B. I and II are correct. C. Only I is correct.C. Only I is correct. D. Only II is not correct.D. Only II is not correct. 58. Each navigation satellite orbits the earth in:58. Each navigation satellite orbits the earth in: A. 24 hoursA. 24 hours B. 16 hoursB. 16 hours C. 6 hoursC. 6 hours D. 106 minsD. 106 mins

59. To get the true course from the magnetic 59. To get the true course from the magnetic course, one of the following should be applied:course, one of the following should be applied:

A. magnetic adjustmentA. magnetic adjustmentB. magnetic dipB. magnetic dipC. deviationC. deviationD. variationD. variation60. Who performs the shifting of the steering 60. Who performs the shifting of the steering

from auto to manual and vice-versa?from auto to manual and vice-versa?A. the bridge watch officerA. the bridge watch officerB. the ABB. the ABC. the second officerC. the second officerD. the masterD. the master

61. The low pressure enclosed by one or more 61. The low pressure enclosed by one or more isobars is called:isobars is called:

A. frontal depressionA. frontal depressionB. frontB. frontC. occlusionC. occlusionD. troughD. trough62. By means of which device is the hunt 62. By means of which device is the hunt

prevented from being transmitted to the prevented from being transmitted to the repeater?repeater?

A. magneticA. magneticB. electricalB. electricalC. lost motionC. lost motionD. speed correctorD. speed corrector

63. What is the weekly publication advising the 63. What is the weekly publication advising the mariners of important matters affecting mariners of important matters affecting navigation safety?navigation safety?

A. weather bulletinA. weather bulletinB. Notice to MarinersB. Notice to MarinersC. Sailing directionsC. Sailing directionsD. Coast PilotD. Coast Pilot64. What is the altitude after applying the dip 64. What is the altitude after applying the dip

and index error of the sextant?and index error of the sextant?A. Observed AltitudeA. Observed AltitudeB. Computed altitudeB. Computed altitudeC. Apparent altitudeC. Apparent altitudeD. Sextant altitudeD. Sextant altitude

65. What is the angle between the true meridian 65. What is the angle between the true meridian and the compass needle?and the compass needle?

A. variationA. variationB. magnetic dipB. magnetic dipC. deviationC. deviationD. compass errorD. compass error66. The navigation system used in Loran C is:66. The navigation system used in Loran C is:A. short range electronicA. short range electronicB. long range high frequencyB. long range high frequencyC. long range at 1950 khzC. long range at 1950 khzD. hyperbolic long rangeD. hyperbolic long range

67. Port facility information in European ports 67. Port facility information in European ports can be obtained from:can be obtained from:

A. Nautical indexA. Nautical indexB. Sailing DirectionB. Sailing DirectionC. Chart CatalogC. Chart CatalogD. World port indexD. World port index68. What is the great circle of the celestial 68. What is the great circle of the celestial

sphere that passes through the Zenith, the sphere that passes through the Zenith, the Nadir and the eastern point.Nadir and the eastern point.

A. hour circleA. hour circleB. principal verticalB. principal verticalC. celestial meridianC. celestial meridianD. prime verticalD. prime vertical

69. What is the circular path in the celestial where the 69. What is the circular path in the celestial where the celestial appears to follow around the with the celestial celestial appears to follow around the with the celestial pole as the circle?pole as the circle?

A. diurnal circleA. diurnal circle B. hour circleB. hour circle C. vertical circleC. vertical circle D. circle of equal altitudeD. circle of equal altitude 70. What is the area where no signal is received, as 70. What is the area where no signal is received, as

the radio wave signals extend out for less distance the radio wave signals extend out for less distance than minimum sky wave distance?than minimum sky wave distance?

A. blackout zoneA. blackout zone B. shadow zoneB. shadow zone C. skip zoneC. skip zone D. diffraction zoneD. diffraction zone

71. Where you write the note that the chart has 71. Where you write the note that the chart has been corrected?been corrected?

A. at the lower center marginA. at the lower center marginB. at the left lower cornerB. at the left lower cornerC. at the right lower cornerC. at the right lower cornerD. at the vicinity of the chart titleD. at the vicinity of the chart title72. Where is the gyro compass at its maximum 72. Where is the gyro compass at its maximum

directive forcedirective forceA. the magnetic polesA. the magnetic polesB. the equatorB. the equatorC. geographic polesC. geographic polesD. 45 deg north latitudeD. 45 deg north latitude

73. Find the true track of the ship when steering on 73. Find the true track of the ship when steering on gyro course 010 deg., variation 2 deg. E, gyro error 2 gyro course 010 deg., variation 2 deg. E, gyro error 2 deg. E, wind leeway angle is 15 deg?deg. E, wind leeway angle is 15 deg?

A. 357 deg TA. 357 deg T B. 023 deg TB. 023 deg T C. 027 deg TC. 027 deg T D .008 deg TD .008 deg T 74. The difference between mean time and apparent 74. The difference between mean time and apparent

time is:time is: A. equation of timeA. equation of time B. civil timeB. civil time C. local timeC. local time D. zone timeD. zone time

75. The bulletin issued by NMC for the period 75. The bulletin issued by NMC for the period stated the includes the anticipated wind, stated the includes the anticipated wind, visibility, weather and wave condition.visibility, weather and wave condition.

A. forecastA. forecastB. prognosisB. prognosisC. synopticC. synopticD. analysisD. analysis76. The difference between compass course 76. The difference between compass course

and true course is:and true course is:A. compass errorA. compass errorB. variationB. variationC. deviationC. deviationD. magnetic clip D. magnetic clip

77. Which buoyage system have shape, color and 77. Which buoyage system have shape, color and number distinction indicating navigable waters?number distinction indicating navigable waters?

A. lateral systemA. lateral system B. special bouysB. special bouys C. danger bouysC. danger bouys D. cardinal systemD. cardinal system 78. What is indicated by a bouy with alternating red 78. What is indicated by a bouy with alternating red

and green horizontal bands in the IALA Buoyage and green horizontal bands in the IALA Buoyage system?system?

A. Preferred channelA. Preferred channel B. Fishing groundB. Fishing ground C. Isolated dangerC. Isolated danger D. Spoil groundD. Spoil ground

79. What is the step to do when shifting from 79. What is the step to do when shifting from telemotor steering to gyro steering?telemotor steering to gyro steering?

A. put on automatic and open bypass valve.A. put on automatic and open bypass valve.B. Open the bypass valve and change to B. Open the bypass valve and change to

automaticautomaticC. Turn rudder left or rightC. Turn rudder left or rightD. Put on hand and open bypass valveD. Put on hand and open bypass valve80. What is the meaning of EC in ECDIS 80. What is the meaning of EC in ECDIS

system?system?A. equidistant calculatorA. equidistant calculatorB. electronic chartB. electronic chartC. electronic computerC. electronic computerD. equatoril chartD. equatoril chart

81. Where is the sun at aphelion?81. Where is the sun at aphelion?A. farthest from the earthA. farthest from the earthB. moon and earth are in lineB. moon and earth are in lineC. farthest from the moonC. farthest from the moonD. crosses the celestial equatorD. crosses the celestial equator82. Where is the compass card attached in the 82. Where is the compass card attached in the

master gyro compass?master gyro compass?A. link armA. link armB. sensitive elementB. sensitive elementC. spider elementC. spider elementD. pick up transformerD. pick up transformer

83. Which of the following is not seen on the left 83. Which of the following is not seen on the left hand page of the Nautical Almanac?hand page of the Nautical Almanac?

A. GHA of MarsA. GHA of MarsB. GHA of VenusB. GHA of VenusC. GHA of AriesC. GHA of AriesD. GHA of the SunD. GHA of the Sun84. With the use of INMARSAT and digital 84. With the use of INMARSAT and digital

selective calling, distress alerts can also be selective calling, distress alerts can also be receive with:receive with:

A. NAVTEXA. NAVTEXB. AmbiguityB. AmbiguityC. ReliabilityC. ReliabilityD. ManuallyD. Manually

85. An electronic aid to navigation which can 85. An electronic aid to navigation which can detect coasts to indicate bearing and range.detect coasts to indicate bearing and range.

A. LORANA. LORANB. Echo sounderB. Echo sounderC. GPSC. GPSD. RadarD. Radar86. What will be used to plot great circle tracks 86. What will be used to plot great circle tracks

and way points if your navigation computer is and way points if your navigation computer is not working?not working?

A. gnomonic chartA. gnomonic chartB. way pointsB. way pointsC. rhumb lineC. rhumb lineD. mercatorD. mercator

87. What is the equipment used to receive 87. What is the equipment used to receive DSC?DSC?

A. INMARSAT receiverA. INMARSAT receiverB. Telex/FaxB. Telex/FaxC. OSCC. OSCD. NavtexD. Navtex88. It is a term in ship’s routeing used to 88. It is a term in ship’s routeing used to

indicate hazardous areas to be avoided by all indicate hazardous areas to be avoided by all vessels:vessels:

A. precautionary areaA. precautionary areaB. traffic separation zone B. traffic separation zone C. danger areaC. danger areaD. area to be avoidedD. area to be avoided

89. On a voyage from New York to Durba, 89. On a voyage from New York to Durba, South Africa you should expect the Agulhas South Africa you should expect the Agulhas current to present a strong ____.current to present a strong ____.

A. offshore setA. offshore setB. head currentB. head currentC. onshore setC. onshore setD. fair or flowing currentD. fair or flowing current90. A resultant force of high and low pressures 90. A resultant force of high and low pressures

is:is:A. pressure gradient forceA. pressure gradient forceB. coriolis pointB. coriolis pointC. cyclostropicC. cyclostropicD. all of the aboveD. all of the above

91. It is an apparent force that causes a deflection of 91. It is an apparent force that causes a deflection of ocean current to the right of N. hemisphere and left of ocean current to the right of N. hemisphere and left of S. hemisphere.S. hemisphere.

A. convergence forceA. convergence force B. divergence forceB. divergence force C. gravitational forceC. gravitational force D. coriolis forceD. coriolis force 92. What is the term used to identify the angular 92. What is the term used to identify the angular

distance between the prime vertical and the sun distance between the prime vertical and the sun during rising and setting?during rising and setting?

A. azimuth angleA. azimuth angle B. amplitudeB. amplitude C. altitudeC. altitude D. zenith distanceD. zenith distance

93. Ships equipped with GMDSS are required to 93. Ships equipped with GMDSS are required to have a communication capable of performing:have a communication capable of performing:

A. 12 GMDSS communication functionsA. 12 GMDSS communication functionsB. 10 GDDSS communication functionsB. 10 GDDSS communication functionsC. 9 GMDSS communication functionsC. 9 GMDSS communication functionsD. 15 GMDSS communication functionsD. 15 GMDSS communication functions94. What is the latitude between 30 deg – 35 deg94. What is the latitude between 30 deg – 35 degA. horse latitudeA. horse latitudeB. polar windB. polar windC. trade windsC. trade windsD. doldrumsD. doldrums

95. What is the position obtained by using two or more 95. What is the position obtained by using two or more lines of position?lines of position?

A. running fixA. running fix B. fixB. fix C. DR positionC. DR position D. Estimated positionD. Estimated position 96. It is a term used to identify the gyro error that 96. It is a term used to identify the gyro error that

occurs during the changes of course and speed as a occurs during the changes of course and speed as a result used to damp the oscillation of the gyro axis.result used to damp the oscillation of the gyro axis.

A. Damping errorA. Damping error B. Apparent driftB. Apparent drift C. Gyroscopic errorC. Gyroscopic error D. Gyroscopic drift D. Gyroscopic drift

97. There are two codes used in GPS, one is :97. There are two codes used in GPS, one is :A. AircraftA. AircraftB. MilitaryB. MilitaryC. Merchant marine vesselC. Merchant marine vesselD. PublicD. Public98. GPS code which is decoded by all receiver 98. GPS code which is decoded by all receiver

is;is;A. Civilian CodeA. Civilian CodeB. Public codeB. Public codeC. Merchant marine codeC. Merchant marine codeD. Military codeD. Military code

99. It is a very low frequency, hyperbolic navigation 99. It is a very low frequency, hyperbolic navigation system, employs lane identification and can be system, employs lane identification and can be provided by the use of a second frequency:provided by the use of a second frequency:

A. DECCAA. DECCA B. OMEGAB. OMEGA C. LORAN CC. LORAN C D. GPSD. GPS 100. Its symbol is described as Dashed Line and 100. Its symbol is described as Dashed Line and

dashed outlined arrows is used fordashed outlined arrows is used for A. Separation zoneA. Separation zone B. Recommended zoneB. Recommended zone C. Recommended trackC. Recommended track D. Limits of restricted areaD. Limits of restricted area