Eagle class, French Fleet Submarine laid down 1920
Displacement:
1,009 t light; 1,036 t standard; 1,200 t normal; 1,327 t full load
Loading submergence 89 tons/feet
Dimensions:
196.85 ft x 26.25 ft x 17.22 ft (normal load)
60.00 m x 8.00 m x 5.25 m
Armament:
1 - 3.94" / 100 mm guns
1 - 1.57" / 40 mm guns
Weight of broadside 32 lbs / 15 kg
6 - 21.0" / 533 mm submerged torpedo tubes (4 tubes fwd, 2 tubes aft)
Operational depth - 121m/398 ft
Emergency depth - 194m/637 ft
Crush depth - 303m/995 ft
Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 1 shaft, 1,786 shp / 1,333 Kw = 15.00 kts
Range 10,000nm at 10.00 kts
Complement:
50 - 66
Cost:
£0.112 million / $0.449 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.3 %
Machinery: 62 tons, 5.2 %
Hull, fittings & equipment: 742 tons, 61.9 %
Fuel, ammunition & stores: 191 tons, 15.9 %
Miscellaneous weights: 200 tons, 16.7 %
Metacentric height 0.9
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.16
Shellfire needed to sink: 850 lbs / 385 Kg = 27.8 x 3.9 " / 100 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.3
(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: 0.472
Sharpness coefficient: 0.35
Hull speed coefficient 'M': 5.66
'Natural speed' for length: 14.03 kts
Power going to wave formation at top speed: 47 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 76.1 %
Relative accommodation and working space: 0.0 %
(Average = 100%)
Displacement factor: 336 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 3.98
(Structure weight / hull surface area: 147 lbs / square foot or 717 Kg / square metre)
Relative longitudinal hull strength: 4.01
(for 0.00 ft / 0.00 m average freeboard, freeboard adjustment -9.91 ft)
Relative composite hull strength: 3.98