Download - ISO 12217-1 Calculation Worksheet
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Design:
Summary of design category definitions
Wave height up toTypical Beaufort wind force
Calculation wind speed (m/s)
Design Category Intended: Multihull
Symbo Unit
Length of hull as in ISO 8666 L H m
Beam of hull BH m
Windage area A LV m2
Mass:
Maximum total load:
Desired Crew Limit CL -
Desired Passenger Limit PL -
Total person aboard
Mass of:
desired Crew Limit at 75kg each kg
provisions + personal effects kg
desired Passenger Limit at 75kg each kg
passenger effects kg
fresh water kg
fuel oil kg
other liquid carried aboard kg
stores, spare gear and cargo (if any) kg
optional equipment and fittings kg
not included in basic outfit
inflatable liferaft kg
other small boats carried aboard kg
margin for future additions kg
Maximum total load = sum of above masses mMTL kg
Light craft condition mass mLCC kg
Loaded displacement mass = mLCC+ mMTL mLDC kg
Mass of:
minimum number of crew kg
essential safety equipment [ (L H- 2.5)2
] kg
non-consumable stores and equipment normally aboard kg
water ballast in tanks which are notified in the owner's
manual to be filled whenever the boat is afloat
inflatable liferaft kg
Load to be included in Minimum Operating Condition mL kg
Light craft condition mass mLCC
kg
Mass in the Minimum Operating Condition = mLCC+ mL mMOC kg
mLDC/mMOC 1.72 > 1.15
ISO 12217-1:2002 E) NON-SAILING BOATS OF LENGTH GREATER THAN OR EQUAL TO 6m
CALCULATION WORKSHEET No. 1
Item
The calculation of Heel Due to
Wind Action is not required.
Remarksalue
11.400
2.740
14.895
D
-Ratio A LV/(L HBH)
4
28
100.00
2100.00
280.00
0.00
2390.00
0.477 1.0
779.21
A
approx. 7m significant 4m significant
kg
280.00
3060.00
2390.00
5450.00
79.21
up to 6 up to 4
3169.21
B C
32
300.00
100.00
28 21 17 13
Design category
600
2m significant 0.5m significantup to 10 up to 8
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Design : 39ft. G.R.P. Passenger Boat - TW1
Offset-Load Test:
Calculation of heeling moment for boats with not more than one level:
Symbol Unit
Plan area for movement of crew A C m2
Crew density = CL/ 4A C CD m-2
Maximum breadth of crew area BC m
Crew heeling if CD 0.5 = 314 ACBCmoment if CD < 0.5 = 314 CLBC (1-CD)
Compliance with requirement :
Symbol Unit
Equivalent moment in kg.m for test = MC/9.806 kg.m
Angle of heel with MCapplied 0 degrees Refer Diagram
Max. an le of heel allowed = 10 + 24-L3/600 0 R degrees
PASS / FAIL ?
The least height from the waterline to the downflooding openings during Offset-Load Test
Least height to waterline (m)
Downflooding:
Downflooding Angle:
Symbol Unit
Required value: (where 0= angle from Offset-Load test)
Category A = larger of (0+ 25)or 30 D(R) degrees
Category B = larger of (0+ 15)or 25 D(R) degrees
Category C = larger of (0+ 5)or 20 D(R) degrees
Category D = 0 D(R) degrees
Area of openings permitted to be submerged = 50L H2 m2
Actual downflooding Angle:
at mass = mMOC D degrees
if ratio of mLDC/mMOC> 1.15 then at mass = mLDC D degrees Refer to GZ Curve
PASS / FAIL ?
Downflooding Height:
Category A
Category B
Category C
Category D
Actual Downflooding Height, hD
ISO 12217-1:2002(E) NON-SAILING BOATS OF LENGTH GREATER THAN OR EQUAL TO 6m
CALCULATION WORKSHEET No. 2
Cat. C > 0.11 H
Cat. D > 0.07 H
Value Remarks
957.37
12.83
13.3
PASS
0.371 0.236 0.454 Refer Diagram
Category C
N.m 9387.97
Item Value Remarks
30.00
25.00
20.00
Item Value Remarks
13.59
0.589
2.200
MC
1.080 0.81
41.26
PASS
1.72
6498.00
= basic x 0.75
0.54
Requirement
Design category given :
Item Value Remarks
0.53
0.54
0.30
0.957 t/m
Requirement
Required
Downflood
Height, hD(R)
(m)
Basic requirement
Basic
Reduced value for small
openings
0.725
0.725
0.700
0.400
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