Khitriy (Stealthy) class, Russian Coast Defense Submarine laid down 1925
Displacement: 365
t light; 374 t standard; 444 t normal; 500 t full load
Dimensions: Length overall / water x beam x draught 147.64
ft / 147.64 ft x 17.88 ft x 12.80 ft (normal load) 45.00 m / 45.00 m x 5.45 m x 3.90 m
Armament: 1 - 1.46"
/ 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1925 Model Anti-aircraft gun in deck mount on centreline
forward Weight of broadside 2 lbs / 1 kg Shells per gun, main battery: 500 4 - 20.9" / 530 mm submerged torpedo
tubes
Machinery: Diesel Internal combustion generators plus batteries, Electric motors, 2 shafts, 452 shp
/ 337 Kw = 12.00 kts Range 8,000nm at 10.00 kts (Bunkerage = 125 tons)
Diving characteristics: Operational
depth - 360ft/110m Emergency depth - 576ft/176m Crush depth - 900ft/274m
Complement: 23 - 31
Cost:
£0.049 million / $0.196 million
Distribution of weights at normal displacement: Armament: 0 tons, 0.0 % Machinery:
15 tons, 3.3 % Hull, fittings & equipment: 251 tons, 56.6 % Fuel, ammunition & stores: 79 tons, 17.8 % Miscellaneous
weights: 99 tons, 22.3 %
Overall survivability and seakeeping ability: Survivability (Non-critical penetrating
hits needed to sink ship): 219 lbs / 99 Kg = 141.9 x 1.5 " / 37 mm shells or 0.3 torpedoes Stability (Unstable if
below 1.00): 1.00 Metacentric height 0.4 ft / 0.1 m Roll period: 12.2 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: 0.460 Length to Beam Ratio: 8.26 : 1 'Natural
speed' for length: 12.15 kts Power going to wave formation at top speed: 40 % 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 (40 %): 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): 100.1 % - Above water (accommodation/working, high = better): 0.0
% Waterplane Area: 1,698 Square feet or 158 Square metres Displacement factor (Displacement / loading): 342 % Structure
weight / hull surface area: 92 lbs/sq ft or 449 Kg/sq metre Hull strength (Relative): - Cross-sectional: 3.60 -
Longitudinal: 3.61 - Overall: 3.60 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
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