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21

Saturday, March 6th 2010, 8:30pm

Don't worry about it. The last version was fine....

22

Saturday, March 6th 2010, 8:55pm

Something like this perhaps? Note that the miscellaneous weight distribution was determined by draught and freeboard with more space being available below the waterline than above the waterline.


Abancay Pr.001, Peru Cargo Ship laid down 1936

Displacement:
15,541 t light; 15,879 t standard; 16,859 t normal; 17,644 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(464.59 ft / 459.32 ft) x 72.18 ft x (25.43 / 26.46 ft)
(141.61 m / 140.00 m) x 22.00 m x (7.75 / 8.06 m)

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,528 shp / 2,632 Kw = 12.00 kts
Range 9,500nm at 12.00 kts
Bunker at max displacement = 1,765 tons

Complement:
739 - 961

Cost:
£2.941 million / $11.765 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0%
Machinery: 99 tons, 0.6%
Hull, fittings & equipment: 3,192 tons, 18.9%
Fuel, ammunition & stores: 1,318 tons, 7.8%
Miscellaneous weights: 12,250 tons, 72.7%
- Hull below water: 7,500 tons
- Hull above water: 4,750 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
19,706 lbs / 8,938 Kg = 182.5 x 6 " / 152 mm shells or 2.3 torpedoes
Stability (Unstable if below 1.00): 1.44
Metacentric height 5.8 ft / 1.8 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.85

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.704
Length to Beam Ratio: 6.36 : 1
'Natural speed' for length: 21.43 kts
Power going to wave formation at top speed: 25 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00%, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Forward deck: 30.00%, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- Aft deck: 35.00%, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- Quarter deck: 15.00%, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Average freeboard: 15.42 ft / 4.70 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.3%
- Above water (accommodation/working, high = better): 89.9%
Waterplane Area: 26,573 Square feet or 2,469 Square metres
Displacement factor (Displacement / loading): 135%
Structure weight / hull surface area: 85 lbs/sq ft or 417 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.27
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily