WesWorld

H class Submarines



Laid down: 1915-16
Dimensions: 171 x 15.5 x 14 feet
Displacment: 440 surfaced, 500 submerged
Armament: 1 x 3" deck gun, 4 x 21" tt
Speed: 13 knots on the surface, 11 submerged.
Range: 1600 nm @ 10 knots
Complement: 21 Officers and Ratings

A-1 class Submarines

A-1, Australia Light Submarine laid down 1928

Displacement:
441 t light; 452 t standard; 516 t normal; 567 t full load

Dimensions: Length overall / water x beam x draught
190.00 ft / 190.00 ft x 19.00 ft x 12.50 ft (normal load)
57.91 m / 57.91 m x 5.79 m x 3.81 m

Armament:
1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1929 Model
Anti-aircraft gun in deck mount
on centreline forward
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1929 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 50
4 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 1,047 shp / 781 Kw = 15.00 kts
Range 7,000nm at 10.00 kts
Bunker at max displacement = 115 tons

Complement:
53 - 70

Cost:
£0.085 million / $0.342 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.3 %
Machinery: 32 tons, 6.2 %
Hull, fittings & equipment: 307 tons, 59.5 %
Fuel, ammunition & stores: 75 tons, 14.5 %
Miscellaneous weights: 100 tons, 19.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
319 lbs / 145 Kg = 23.7 x 3.0 " / 76 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 0.5 ft / 0.1 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.400
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 13.78 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness =

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.1 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 2,222 Square feet or 206 Square metres
Displacement factor (Displacement / loading): 290 %
Structure weight / hull surface area: 89 lbs/sq ft or 436 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.36
- Longitudinal: 2.19
- Overall: 2.43
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is extremely poor

Operational Diving Depth: 243ft
Emergency Diving Depth: 389ft
Crush Depth: 607ft

"B" class, Australia Submarine laid down 1933

Displacement:
467 t light; 479 t standard; 571 t normal; 645 t full load

Dimensions: Length overall / water x beam x draught
200.00 ft / 200.00 ft x 20.00 ft x 12.50 ft (normal load)
60.96 m / 60.96 m x 6.10 m x 3.81 m

Armament:
1 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1933 Model
Dual purpose gun in deck mount
on centreline forward
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1933 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 32 lbs / 15 kg
Shells per gun, main battery: 50
4 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 1,097 shp / 818 Kw = 15.00 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 166 tons

Complement:
57 - 75

Cost:
£0.115 million / $0.458 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.7 %
Machinery: 32 tons, 5.6 %
Hull, fittings & equipment: 331 tons, 57.9 %
Fuel, ammunition & stores: 104 tons, 18.3 %
Miscellaneous weights: 100 tons, 17.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
412 lbs / 187 Kg = 12.9 x 4.0 " / 102 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 0.6 ft / 0.2 m
Roll period: 10.8 seconds


Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.400
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 14.14 kts
Power going to wave formation at top speed: 38 %
Trim (Max stability = 0, Max steadiness = 100): 50

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 75.2 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 2,462 Square feet or 229 Square metres
Displacement factor (Displacement / loading): 291 %
Structure weight / hull surface area: 89 lbs/sq ft or 436 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.23
- Longitudinal: 1.92
- Overall: 2.18
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor

Operational Diving Depth: 220ft
Emergency Diving Depth: 370ft
Crush Depth: 590ft

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