S-30 Delphinos
S-31 Aphrodite
S-32 Astra
S-33 Boreas
S-34 Diktynna
S-35 Hephaistos
S-36 Nike
S-37 Persephone
S-38 Phobos
S-39 Porphyrion
S-40 Phorcys
S-41 Oreithyia
S-42 Morpheus
S-43 Melinoe
S-44 Lampetia
S-45 Kratos
S-46 Kalligeneia
Delphinos, Greece Submarine laid down 1932
Displacement:
808 t light; 825 t standard; 869 t normal; 904 t full load
Dimensions: Length overall / water x beam x draught
190.00 ft / 190.00 ft x 22.00 ft x 13.50 ft (normal load)
57.91 m / 57.91 m x 6.71 m x 4.11 m
6 - 21.0" / 533.4 mm submerged torpedo tubes
Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 1,902 shp / 1,419 Kw = 16.00 kts
Range 4,000nm at 9.50 kts
Bunker at max displacement = 79 tons
Complement:
79 - 104
Cost:
£0.164 million / $0.657 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 56 tons, 6.5 %
Hull, fittings & equipment: 551 tons, 63.5 %
Fuel, ammunition & stores: 61 tons, 7.1 %
Miscellaneous weights: 200 tons, 23.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
313 lbs / 142 Kg = 2.9 x 6 " / 152 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.4 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: 0.539
Length to Beam Ratio: 8.64 : 1
'Natural speed' for length: 13.78 kts
Power going to wave formation at top speed: 52 %
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): 118.9 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 2,887 Square feet or 268 Square metres
Displacement factor (Displacement / loading): 278 %
Structure weight / hull surface area: 130 lbs/sq ft or 635 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 4.43
- Longitudinal: 2.72
- Overall: 3.08
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