SC.1, Italian Submarine laid down 1927
Displacement:
1,000 t light; 1,029 t standard; 1,310 t normal; 1,535 t full load
Dimensions: Length overall / water x beam x draught
229.66 ft / 229.66 ft x 22.97 ft x 16.40 ft (normal load)
70.00 m / 70.00 m x 7.00 m x 5.00 m
Armament:
1 - 3.94" / 100 mm guns in single mounts, 30.42lbs / 13.80kg shells, 1927 Model
Quick firing gun in deck mount
on centreline amidships, 1 raised gun
2 - 0.54" / 13.7 mm guns (1x2 guns), 0.08lbs / 0.04kg shells, 1927 Model
Machine guns in deck mount
on side
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 150
8 - 21.0" / 533 mm submerged torpedo tubes
Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 1,800 shp / 1,343 Kw = 15.01 kts
Range 18,050nm at 10.00 kts
Bunker at max displacement = 506 tons
Complement:
108 - 141
Cost:
£0.168 million / $0.672 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.3 %
Machinery: 57 tons, 4.3 %
Hull, fittings & equipment: 659 tons, 50.3 %
Fuel, ammunition & stores: 310 tons, 23.7 %
Miscellaneous weights: 280 tons, 21.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
519 lbs / 236 Kg = 17.0 x 3.9 " / 100 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.9 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: 0.530
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 15.15 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): 112.5 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 3,613 Square feet or 336 Square metres
Displacement factor (Displacement / loading): 309 %
Structure weight / hull surface area: 115 lbs/sq ft or 563 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.46
- Longitudinal: 2.18
- Overall: 2.44
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
Operational Diving Depth=73m
Emergency Diving Depth=117m
Crush Depth=183m