Antonio Sciesca Class Submarine
7 Units laid down 1930
Antonio Sciesa
Balilla
Domenico Millelire
Enrico Toti
Giovanni da Procida
Goffredo Mameli
Pier Capponi
Italian Ocean Going Submarine laid down 1930
Displacement:
1,500 t light; 1,548 t standard (sub); 2,203 t normal; 2,727 t full load
Dimensions: Length overall / water x beam x draught
259.19 ft / 259.19 ft x 25.92 ft x 21.65 ft (normal load)
79.00 m / 79.00 m x 7.90 m x 6.60 m
Armament:
2 - 3.94" / 100 mm guns in single mounts, 30.42lbs / 13.80kg shells, 1930 Model
Breech loading guns in deck mounts
on centreline, all amidships
1 - 1.00" / 25.4 mm guns in single mounts, 0.52lbs / 0.24kg shells, 1930 Model
Anti-aircraft gun in deck mount
on side, 1 raised gun
Weight of broadside 61 lbs / 28 kg
Shells per gun, main battery: 120
10 - 17.7" / 450 mm submerged torpedo tubes ( 6 fore, 4 aft )
Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 4,000 shp / 2,984 Kw = 17.14 kts
Range 20,530nm at 12.00 kts
Bunker at max displacement = 1,179 tons
Complement:
159 - 208
Cost:
£0.317 million / $1.270 million
Distribution of weights at normal displacement:
Armament: 8 tons, 0.3 %
Machinery: 121 tons, 5.5 %
Hull, fittings & equipment: 971 tons, 44.1 %
Fuel, ammunition & stores: 703 tons, 31.9 %
Miscellaneous weights: 400 tons, 18.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,246 lbs / 565 Kg = 40.8 x 3.9 " / 100 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.7 ft / 0.2 m
Roll period: 13.4 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: 16.10 kts
Power going to wave formation at top speed: 45 %
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): 88.0 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 4,601 Square feet or 427 Square metres
Displacement factor (Displacement / loading): 313 %
Structure weight / hull surface area: 123 lbs/sq ft or 600 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.01
- Longitudinal: 2.61
- Overall: 2.70
Hull space for machinery, storage, compartmentation is adequate
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=80m
Emergency Diving Depth=130m
Crush Depth=200m
400t misc. weight = 300tons ballast tanks + 20x450mm torpedoes(20t) + 80tons extra stores for extended patrols
Date 1930
Ocean=1 Coast=0 1
misc wt 50
Gun cal cm 10
ElecHP 1500 Max Sub Spd 7.8
DieselHP 8000 Max Surf Spd 19.6
L 79.0
Beam 7.9
D 6.6
Crush depth 225
sigma 480
#TT 10
mines 0
Tons Oil 500.0
Tons Battery 150.0
Cruise speed 10
Submerged speed 4
Cruise Power 1064 Range 23494
CREW 65
D_body 4.6
SpaceK 26.0
T_sheet 2.2
Structure mass 704.2
wt gun 7.5
misc wt 50
wt TT 150
wt mines 0
wt motors 58
wt diesel 119
wt H2O2 0
wt fuel&batts 650
kerb wt 1739
disp 2060
res buoyancy 16%
Submgd power 199 Range 89