WesWorld

Another ship for 1934.

She is based on the USS Cachalot


K Class, Australia Submarine laid down 1934

Displacement:
1,074 t light; 1,102 t standard; 1,244 t normal; 1,358 t full load

Dimensions: Length overall / water x beam x draught
270.00 ft / 270.00 ft x 25.00 ft x 12.90 ft (normal load)
82.30 m / 82.30 m x 7.62 m x 3.93 m

Armament:
1 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1934 Model
Breech loading gun in deck mount
on centreline forward
1 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1934 Model
Anti-aircraft gun in deck mount
on centreline aft
2 - 0.79" / 20.0 mm guns (1x2 guns), 0.24lbs / 0.11kg shells, 1934 Model
Machine guns in deck mount
on centreline amidships, all raised guns - superfiring
Weight of broadside 34 lbs / 16 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 2,597 shp / 1,937 Kw = 17.00 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 256 tons

Complement:
104 - 136

Cost:
£0.254 million / $1.014 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.3 %
Machinery: 75 tons, 6.0 %
Hull, fittings & equipment: 745 tons, 59.9 %
Fuel, ammunition & stores: 170 tons, 13.7 %
Miscellaneous weights: 250 tons, 20.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
946 lbs / 429 Kg = 29.6 x 4.0 " / 102 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.2 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: 0.500
Length to Beam Ratio: 10.80 : 1
'Natural speed' for length: 16.43 kts
Power going to wave formation at top speed: 41 %
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 (15 %): 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): 72.3 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 4,497 Square feet or 418 Square metres
Displacement factor (Displacement / loading): 287 %
Structure weight / hull surface area: 121 lbs/sq ft or 590 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.90
- Longitudinal: 1.16
- Overall: 1.57
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