Numeral(Cms 01-Cms99), Bcs Coastal-patrol and mine boat laid down 1913
Displacement:
369 t light; 388 t standard; 447 t normal; 495 t full load
Dimensions: Length overall / water x beam x draught
182,76 ft / 180,45 ft x 29,53 ft x 5,41 ft (normal load)
55,71 m / 55,00 m x 9,00 m x 1,65 m
Armament:
2 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1913 Model
Quick firing guns in deck mounts
on centreline, all forward, 1 raised mount
2 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1913 Model
Quick firing guns in deck mounts
on side, all amidships
Weight of broadside 65 lbs / 29 kg
Shells per gun, main battery: 250
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 1 shaft, 2.234 shp / 1.666 Kw = 18,00 kts
Range 3.500nm at 10,00 kts
Bunker at max displacement = 108 tons (100% coal)
Complement:
48 - 63
Cost:
£0,036 million / $0,145 million
Distribution of weights at normal displacement:
Armament: 8 tons, 1,8 %
Machinery: 96 tons, 21,5 %
Hull, fittings & equipment: 195 tons, 43,6 %
Fuel, ammunition & stores: 78 tons, 17,5 %
Miscellaneous weights: 70 tons, 15,6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
804 lbs / 365 Kg = 26,3 x 3,9 " / 100 mm shells or 0,5 torpedoes
Stability (Unstable if below 1.00): 1,25
Metacentric height 1,2 ft / 0,4 m
Roll period: 11,3 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0,10
Seaboat quality (Average = 1.00): 1,12
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,543
Length to Beam Ratio: 6,11 : 1
'Natural speed' for length: 13,43 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 13,12 ft / 4,00 m
- Forecastle (20 %): 10,30 ft / 3,14 m
- Mid (50 %): 10,30 ft / 3,14 m
- Quarterdeck (15 %): 10,30 ft / 3,14 m
- Stern: 10,30 ft / 3,14 m
- Average freeboard: 10,53 ft / 3,21 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 102,0 %
- Above water (accommodation/working, high = better): 146,3 %
Waterplane Area: 3.578 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 137 %
Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,88
- Longitudinal: 3,11
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
W/L 10t
Mines 50 t
Sweeping Gear 10t