(Historical data)
A class of coastal submarine chasers.
S-9, laid down 1942
S-10, laid down 1942
S-11, laid down 1942
S-12, laid down 1942
S-13, laid down 1942
S-14, laid down 1942
S-15, laid down 1942
S-16, laid down 1942
S-17, laid down 1943
S-18, laid down 1943
S-19, laid down 1943
S-20, laid down 1943
S-21, laid down 1943
Enter ship name, Enter country Enter ship type laid down 1942
Displacement:
100 t light; 105 t standard; 111 t normal; 116 t full load
Dimensions: Length overall / water x beam x draught
100.51 ft / 98.43 ft x 16.08 ft x 4.92 ft (normal load)
30.63 m / 30.00 m x 4.90 m x 1.50 m
Armament:
1 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1942 Model
Breech loading gun in deck mount
on centreline forward
1 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1942 Model
Breech loading gun in deck mount
on centreline aft
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 22 lbs / 10 kg
Shells per gun, main battery: 200
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 988 shp / 737 Kw = 17.06 kts
Range 1,700nm at 10.00 kts (Bunkerage = 11 tons)
Complement:
16 - 22
Cost:
£0.060 million / $0.239 million
Distribution of weights at normal displacement:
Armament: 3 tons, 2.4 %
Armour: 2 tons, 1.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 1.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 26 tons, 23.2 %
Hull, fittings & equipment: 50 tons, 44.9 %
Fuel, ammunition & stores: 11 tons, 9.8 %
Miscellaneous weights: 20 tons, 18.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
135 lbs / 61 Kg = 6.5 x 3.5 " / 88 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.02
Metacentric height 0.3 ft / 0.1 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.12
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 6.12 : 1
'Natural speed' for length: 9.92 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 11.81 ft / 3.60 m
- Forecastle (20 %): 7.87 ft / 2.40 m
- Mid (50 %): 7.87 ft / 2.40 m
- Quarterdeck (15 %): 7.87 ft / 2.40 m
- Stern: 7.87 ft / 2.40 m
- Average freeboard: 8.19 ft / 2.50 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 114.2 %
- Above water (accommodation/working, high = better): 98.8 %
Waterplane Area: 1,054 Square feet or 98 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 22 lbs/sq ft or 107 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.76
- Longitudinal: 11.99
- Overall: 1.01
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate