WesWorld

Incheon-Class, Chosen Submarine laid down 1942

Displacement:
922 t light; 942 t standard; 985 t normal; 1.019 t full load

Dimensions: Length overall / water x beam x draught
222,44 ft / 222,44 ft x 24,44 ft x 15,09 ft (normal load)
67,80 m / 67,80 m x 7,45 m x 4,60 m

Armament:
1 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1942 Model
Anti-aircraft gun in deck mount
on centreline forward, 1 raised gun
1 - 0,30" / 7,6 mm guns in single mounts, 0,01lbs / 0,00kg shells, 1942 Model
Machine gun in deck mount
on centreline amidships, 1 raised gun
Weight of broadside 2 lbs / 1 kg
Shells per gun, main battery: 250
6 - 21,0" / 533,4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 1.573 shp / 1.173 Kw = 15,20 kts
Range 5.000nm at 8,40 kts
Bunker at max displacement = 77 tons

Complement:
42 - 55

Cost:
£0,243 million / $0,972 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0,0%
Machinery: 41 tons, 4,2%
Hull, fittings & equipment: 730 tons, 74,2%
Fuel, ammunition & stores: 63 tons, 6,4%
Miscellaneous weights: 150 tons, 15,2%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
937 lbs / 425 Kg = 606,4 x 1,5 " / 37 mm shells or 0,9 torpedoes
Stability (Unstable if below 1.00): 1,27
Metacentric height 0,9 ft / 0,3 m
Roll period: 10,6 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0,00
Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,420
Length to Beam Ratio: 9,10 : 1
'Natural speed' for length: 14,91 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 0,00 ft / 0,00 m
- Forecastle (20%): 0,00 ft / 0,00 m
- Mid (50%): 0,00 ft / 0,00 m
- Quarterdeck (20%): 0,00 ft / 0,00 m
- Stern: 0,00 ft / 0,00 m
- Average freeboard: 0,00 ft / 0,00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 59,3%
- Above water (accommodation/working, high = better): 0,0%
Waterplane Area: 3.390 Square feet or 315 Square metres
Displacement factor (Displacement / loading): 421%
Structure weight / hull surface area: 144 lbs/sq ft or 702 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 4,42
- Longitudinal: 2,90
- Overall: 3,22
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

Only for chinese use; not official
Diving depth: 322 feet
Emergency Depth: 483 feet
Crush Depth: 805 feet


Breakdown of Misc. Weight:
25 tons for torpedos
130 tons for ballast



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