WesWorld

Submarines up to 450 tons standard

Sa Class, Iberia Submarine (Coastal) laid down 1927

Sa 1 to Sa 24

Displacement:
439 t light; 450 t standard; 488 t normal; 519 t full load

Dimensions: Length overall / water x beam x draught
164.48 ft / 164.04 ft x 15.58 ft (Bulges 18.86 ft) x 12.47 ft (normal load)
50.13 m / 50.00 m x 4.75 m (Bulges 5.75 m) x 3.80 m

Armament:
1 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1927 Model
Breech loading gun in deck mount
on centreline forward
4 - 0.49" / 12.5 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1927 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 100
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 821 shp / 613 Kw = 14.00 kts
Range 7,000nm at 8.00 kts
Bunker at max displacement = 69 tons

Complement:
51 - 67

Cost:
£0.081 million / $0.323 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.8 %
Machinery: 26 tons, 5.3 %
Hull, fittings & equipment: 309 tons, 63.2 %
Fuel, ammunition & stores: 50 tons, 10.2 %
Miscellaneous weights: 100 tons, 20.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
132 lbs / 60 Kg = 4.3 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.3 ft / 0.1 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 15 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 0.09

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.443
Length to Beam Ratio: 8.70 : 1
'Natural speed' for length: 12.81 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 1.64 ft / 0.50 m
- Forecastle (20 %): 1.64 ft / 0.50 m
- Mid (50 %): 1.64 ft / 0.50 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m (1.64 ft / 0.50 m before break)
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 1.39 ft / 0.43 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 145.0 %
- Above water (accommodation/working, high = better): 9.9 %
Waterplane Area: 1,621 Square feet or 151 Square metres
Displacement factor (Displacement / loading): 267 %
Structure weight / hull surface area: 100 lbs/sq ft or 488 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.50
- Longitudinal: 3.84
- Overall: 3.53
Hull space for machinery, storage, compartmentation is cramped
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

Diving depth = 357'
Emergency dive = 571'
Crush depth = 928'

Sc Class, Iberia Submarine (Coastal) laid down 1931

Sc 1 to Sc14

Displacement:
439 t light; 450 t standard; 487 t normal; 517 t full load

Dimensions: Length overall / water x beam x draught
164.48 ft / 164.04 ft x 15.58 ft (Bulges 18.86 ft) x 12.47 ft (normal load)
50.13 m / 50.00 m x 4.75 m (Bulges 5.75 m) x 3.80 m

Armament:
1 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1927 Model
Breech loading gun in deck mount
on centreline forward, 1 raised gun
2 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 100
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 820 shp / 612 Kw = 14.00 kts
Range 7,000nm at 8.00 kts
Bunker at max displacement = 66 tons

Complement:
51 - 67

Cost:
£0.096 million / $0.386 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.8 %
Machinery: 25 tons, 5.0 %
Hull, fittings & equipment: 312 tons, 64.1 %
Fuel, ammunition & stores: 48 tons, 9.9 %
Miscellaneous weights: 98 tons, 20.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
139 lbs / 63 Kg = 4.5 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.3 ft / 0.1 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 15 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 0.09

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.442
Length to Beam Ratio: 8.70 : 1
'Natural speed' for length: 12.81 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 1.64 ft / 0.50 m
- Forecastle (20 %): 1.64 ft / 0.50 m
- Mid (50 %): 1.64 ft / 0.50 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m (1.64 ft / 0.50 m before break)
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 1.39 ft / 0.43 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 141.5 %
- Above water (accommodation/working, high = better): 9.9 %
Waterplane Area: 1,620 Square feet or 151 Square metres
Displacement factor (Displacement / loading): 273 %
Structure weight / hull surface area: 101 lbs/sq ft or 494 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.51
- Longitudinal: 3.87
- Overall: 3.54
Hull space for machinery, storage, compartmentation is cramped
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

Diving depth = 354'
Emergency dive = 566'
Crush depth = 885'

Se Class, Iberia Submarine (Coastal) laid down 1936

Se 1 to Se 6, laid down 1936
Se 7 to Se 18, laid down 1937
Se 19 to Se 30, laid down 1938
Se 31 to Se 42, laid down 1939
Se 43 to Se 60, laid down 1940


Displacement:
376 t light; 386 t standard; 402 t normal; 415 t full load

Dimensions: Length overall / water x beam x draught
132.18 ft / 131.23 ft x 13.12 ft (Bulges 19.69 ft) x 13.12 ft (normal load)
40.29 m / 40.00 m x 4.00 m (Bulges 6.00 m) x 4.00 m

Armament:
1 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1936 Model
Breech loading gun in deck mount
on centreline amidships, 1 raised gun
2 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on centreline, all amidships, all raised mounts - superfiring
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 100
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 1,053 shp / 786 Kw = 15.00 kts
Range 2,000nm at 10.00 kts
Bunker at max displacement = 30 tons

Complement:
44 - 58

Cost:
£0.109 million / $0.434 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1.0 %
Machinery: 30 tons, 7.3 %
Hull, fittings & equipment: 267 tons, 66.5 %
Fuel, ammunition & stores: 26 tons, 6.5 %
Miscellaneous weights: 75 tons, 18.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27 lbs / 12 Kg = 0.9 x 3.9 " / 100 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 0.3 ft / 0.1 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 7 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 0.02

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.415
Length to Beam Ratio: 6.67 : 1
'Natural speed' for length: 11.46 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 1.64 ft / 0.50 m
- Forecastle (20 %): 1.64 ft / 0.50 m
- Mid (50 %): 1.64 ft / 0.50 m (0.00 ft / 0.00 m aft of break)
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.82 ft / 0.25 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 281.0 %
- Above water (accommodation/working, high = better): 3.5 %
Waterplane Area: 1,070 Square feet or 99 Square metres
Displacement factor (Displacement / loading): 243 %
Structure weight / hull surface area: 113 lbs/sq ft or 553 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.81
- Longitudinal: 6.20
- Overall: 4.00
Hull space for machinery, storage, compartmentation is extremely poor
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

Dive depth - 400'
Emergency depth - 640'
Crush depth - 1000'

SG-1 Class

The SG-1 class submarine is envisioned as a coastal-ish boat for use in the Caribbean and South China Sea. As a trade warfare role is possible - with all the rules associated with such - a main gun and a twin 25mm AA mount are carried for shooting up civilian ships and aircraft respectively. Two aft tubes are retained so the boat can turn away from threats and still be threatening if necessary.

Speed and range are not spectacular, but considered adequate (range in particular, given the close proximity of likely hunting grounds).

A run of twelve or more is envisioned.

SG-1, laid down 1946
SG-2, laid down 1946
SG-3, laid down 1946
SG-4, laid down 1946
SG-5, laid down 1946
SG-6, laid down 1946

Model: SG-1 class submarine
Date: 1945
Oceanic
Armament:
- Guns: 1x100mm, 2x25mm (latter as 5 t misc. weight)
- Torpedoes: 6x533mm (4F/2A) + 12 reloads (simmed as 24 mines)
- Mines: Up to 36 in place of torpedoes
Electric HP: 2,500 hp
Diesel HP: 3,000 hp
Crew: 45
wt fuel&batts: 156
Light Displacement: 952 t
Loaded Displacement/Kerb Weight: 1,082 t
Full Displacement: 1,277 t
Reserve buoyancy: 15%
Max Surf Speed: 15.80 knots
Max Sub Speed: 14.4 knots

Length: 69.0 m
Beam: 7.4 m
Draft: 5.0 m
Crush depth: 317.5 m and not a centimetre more
Tons Oil: 106 t
Tons Battery: 50 t
Cruise speed: 10 knots
Submerged speed: 5 knots
Surface Range: 7,019 nm @ 10 knots
Submerged Range: 65 @ 5 knots

Other Features:
-Snort Mast (10 t miscellaneous weight)
-Sonar (10 t miscellaneous weight)
-Basic surface-search radar (5 t miscellaneous weight)
-Weight reserve (10 t miscellaneous weight)