K1 , laid down 1925, rebuild 1942
K2 , laid down 1925, rebuild 1942
K3 , laid down 1926, rebuild 1942
K4 , laid down 1926, rebuild 1942
K5 , laid down 1926, rebuild 1942
K6 , laid down 1926, rebuild 1942
K7 , laid down 1927, rebuild 1942
K8 , laid down 1927, rebuild 1942
K9 , laid down 1927, lost 27-02-36 (unknown)
K10 , laid down 1927, rebuild 1942
K11 , laid down 1928, rebuild 1942
K12 , laid down 1928, sunk 17-11-35 (depth charge)
K13 , laid down 1929, lost 30-03-36 (unknown)
K14 , laid down 1929, rebuild 1942
K15 , laid down 1929, rebuild 1942
K16 , laid down 1929, rebuild 1943
Displacement:
460 t light; 472 t standard (450 t officially); 511 t normal; 542 t full load
Dimensions: Length overall / water x beam x draught
143,86 ft / 143,86 ft x 19,72 ft x 13,12 ft (normal load)
43,85 m / 43,85 m x 6,01 m x 4,00 m
Armament:
1 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1925 Model
Breech loading gun in deck mount
on centreline forward
Weight of broadside 21 lbs / 9 kg
Shells per gun, main battery: 120
5 - 21,0" / 533 mm submerged torpedo tubes
4 bow tubes / 1 aft tube
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1.474 shp / 1.100 Kw = 15,82 kts
Range 4.000nm at 10,00 kts (Bunkerage = 70 tons)
Complement:
53 - 69
Diving Depth:
110m operational
175m emergency
275m crush
Cost:
£0,082 million / $0,327 million
Distribution of weights at normal displacement:
Armament: 3 tons, 0,5%
Machinery: 48 tons, 9,4%
Hull, fittings & equipment: 304 tons, 59,6%
Fuel, ammunition & stores: 51 tons, 9,9%
Miscellaneous weights: 105 tons, 20,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
53 lbs / 24 Kg = 2,6 x 3,5 " / 88 mm shells or 0,1 torpedoes
Stability (Unstable if below 1.00): 1,02
Metacentric height 0,5 ft / 0,1 m
Roll period: 12,3 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- 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: 0,480
Length to Beam Ratio: 7,30 : 1
'Natural speed' for length: 11,99 kts
Power going to wave formation at top speed: 58 %
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: 0,16 ft / 0,05 m
- Forecastle (20%): 0,16 ft / 0,05 m
- Mid (50%): 0,16 ft / 0,05 m
- Quarterdeck (15%): 0,16 ft / 0,05 m
- Stern: 0,16 ft / 0,05 m
- Average freeboard: 0,16 ft / 0,05 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 221,6%
- Above water (accommodation/working, high = better): 1,1%
Waterplane Area: 1.856 Square feet or 172 Square metres
Displacement factor (Displacement / loading): 230%
Structure weight / hull surface area: 105 lbs/sq ft or 514 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3,72
- Longitudinal: 4,32
- Overall: 3,78
Hull space for machinery, storage, compartmentation is extremely poor
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
After Refit
Displacement:
456 t light; 468 t standard; 511 t normal; 545 t full load
Dimensions: Length overall / water x beam x draught
143,86 ft / 143,86 ft x 19,72 ft x 13,12 ft (normal load)
43,85 m / 43,85 m x 6,01 m x 4,00 m
Armament:
1 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1925 Model
Breech loading gun in deck mount
on centreline forward
Weight of broadside 21 lbs / 9 kg
Shells per gun, main battery: 120
5 - 21,0" / 533 mm submerged torpedo tubes
Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 1.650 shp / 1.231 Kw = 16,26 kts
Range 3.200nm at 12,00 kts
Bunker at max displacement = 77 tons
Complement:
53 - 69
Cost:
£0,079 million / $0,317 million
Distribution of weights at normal displacement:
Armament: 3 tons, 0,5%
Machinery: 43 tons, 8,4%
Hull, fittings & equipment: 305 tons, 59,8%
Fuel, ammunition & stores: 54 tons, 10,7%
Miscellaneous weights: 105 tons, 20,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
60 lbs / 27 Kg = 2,9 x 3,5 " / 88 mm shells or 0,1 torpedoes
Stability (Unstable if below 1.00): 1,03
Metacentric height 0,5 ft / 0,1 m
Roll period: 12,2 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- 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: 0,480
Length to Beam Ratio: 7,30 : 1
'Natural speed' for length: 11,99 kts
Power going to wave formation at top speed: 60 %
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: 0,16 ft / 0,05 m
- Forecastle (20%): 0,16 ft / 0,05 m
- Mid (50%): 0,16 ft / 0,05 m
- Quarterdeck (15%): 0,16 ft / 0,05 m
- Stern: 0,16 ft / 0,05 m
- Average freeboard: 0,16 ft / 0,05 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 210,2%
- Above water (accommodation/working, high = better): 1,1%
Waterplane Area: 1.856 Square feet or 172 Square metres
Displacement factor (Displacement / loading): 241%
Structure weight / hull surface area: 106 lbs/sq ft or 516 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3,72
- Longitudinal: 4,34
- Overall: 3,78
Hull space for machinery, storage, compartmentation is extremely poor
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
4 bow tubes
1 aft tube
110m operational diving depth
175m emergency diving depth
275m crush depth