au type 4c, Australia short rang submarine laid down 1929
Displacement:
388 t light; 400 t standard; 444 t normal; 477 t full load
Loading submergence 56 tons/feet
Dimensions:
122.99 ft x 25.00 ft x 10.00 ft (normal load)
37.49 m x 7.62 m x 3.05 m
Armament:
1 - 4.00" / 102 mm guns
1 - 0.80" / 20 mm guns
Weight of broadside 32 lbs / 15 kg
3 - 21.0" / 533.4 mm submerged torpedo tubes
Machinery:
Diesel Internal combustion motors, plus batteries
Electric cruising motors plus geared drives, 2 shafts, 1,047 shp / 781 Kw = 14.41 kts
Range 3,000nm at 12.00 kts
Complement:
48 - 62
Cost:
£0.086 million / $0.344 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.9 %
Machinery: 32 tons, 7.2 %
Hull, fittings & equipment: 227 tons, 51.2 %
Fuel, ammunition & stores: 55 tons, 12.5 %
Miscellaneous weights: 125 tons, 28.2 %
Metacentric height 0.8
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is extremely poor
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.14
Shellfire needed to sink: 215 lbs / 97 Kg = 6.7 x 4.0 " / 102 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 0 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.00
Relative quality as seaboat: 0.00
Hull form characteristics:
Block coefficient: 0.505
Sharpness coefficient: 0.42
Hull speed coefficient 'M': 4.93
'Natural speed' for length: 11.09 kts
Power going to wave formation at top speed: 64 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 105.2 %
Relative accommodation and working space: 0.0 %
(Average = 100%)
Displacement factor: 200 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 3.15
(Structure weight / hull surface area: 91 lbs / square foot or 444 Kg / square metre)
Relative longitudinal hull strength: 2.82
(for 0.00 ft / 0.00 m average freeboard, freeboard adjustment -8.12 ft)
Relative composite hull strength: 2.90
Operationl diving depth 290 feet
Emergency diving depth 340 feet
Cursh depth 500 feet
AU2 , Australia Long Rang submarine laid down 1931
Displacement:
1,397 t light; 1,436 t standard; 1,819 t normal; 2,117 t full load
Loading submergence 214 tons/feet
Dimensions:
230.00 ft x 45.00 ft x 10.00 ft (normal load)
70.10 m x 13.72 m x 3.05 m
Armament:
1 - 4.00" / 102 mm guns
1 - 0.80" / 20 mm guns
Weight of broadside 32 lbs / 15 kg
7 - 21.0" / 533.4 mm submerged torpedo tubes
Machinery:
Diesel Internal combustion motors, plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 5,040 shp / 3,760 Kw = 18.00 kts
Range 12,600nm at 12.00 kts
Complement:
130 - 169
Cost:
£0.320 million / $1.281 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.2 %
Machinery: 151 tons, 8.3 %
Hull, fittings & equipment: 892 tons, 49.1 %
Fuel, ammunition & stores: 422 tons, 23.2 %
Miscellaneous weights: 350 tons, 19.2 %
Metacentric height 4.0
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is extremely poor
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.83
Shellfire needed to sink: 1,738 lbs / 788 Kg = 54.3 x 4.0 " / 102 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.8
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 0 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.00
Relative quality as seaboat: 0.00
Hull form characteristics:
Block coefficient: 0.615
Sharpness coefficient: 0.46
Hull speed coefficient 'M': 5.76
'Natural speed' for length: 15.17 kts
Power going to wave formation at top speed: 61 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 70.8 %
Relative accommodation and working space: 0.0 %
(Average = 100%)
Displacement factor: 266 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 3.05
(Structure weight / hull surface area: 113 lbs / square foot or 550 Kg / square metre)
Relative longitudinal hull strength: 0.79
(for 0.00 ft / 0.00 m average freeboard, freeboard adjustment -10.77 ft)
Relative composite hull strength: 1.10
Operational diving depth 110 feet
Emergency diving depth 240 feet
Crush depth 300