Quoted
[SIZE=3]S-class Destroyer, British Destroyer laid down 1917[/SIZE]
Displacement:
964 t light; 993 t standard; 1,075 t normal; 1,141 t full load
Dimensions: Length overall / water x beam x draught
280.06 ft / 276.00 ft x 26.75 ft x 10.80 ft (normal load)
85.36 m / 84.12 m x 8.15 m x 3.29 m
Armament:
3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1917 Model
Breech loading guns in deck mounts
on centreline, evenly spread
Aft Main mounts separated by engine room
1 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1917 Model
Quick firing gun in deck mount
on side amidships
4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1917 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 98 lbs / 44 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 32,896 shp / 24,540 Kw = 34.00 kts
Range 5,000nm at 10.00 kts
Bunker at max displacement = 147 tons
Complement:
93 - 122
Cost:
£0.238 million / $0.951 million
Distribution of weights at normal displacement:
Armament: 12 tons, 1.1 %
Machinery: 620 tons, 57.7 %
Hull, fittings & equipment: 331 tons, 30.8 %
Fuel, ammunition & stores: 112 tons, 10.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
243 lbs / 110 Kg = 7.6 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 0.9 ft / 0.3 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 0.92
Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.472
Length to Beam Ratio: 10.32 : 1
'Natural speed' for length: 18.98 kts
Power going to wave formation at top speed: 75 %
Trim (Max stability = 0, Max steadiness = 100): 76
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: 23.00 ft / 7.01 m
- Forecastle (25 %): 20.00 ft / 6.10 m (13.00 ft / 3.96 m aft of break)
- Mid (50 %): 13.00 ft / 3.96 m
- Quarterdeck (15 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 15.05 ft / 4.59 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 194.7 %
- Above water (accommodation/working, high = better): 83.2 %
Waterplane Area: 4,986 Square feet or 463 Square metres
Displacement factor (Displacement / loading): 43 %
Structure weight / hull surface area: 27 lbs/sq ft or 132 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.47
- Longitudinal: 4.41
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Quoted
[SIZE=3]Contae-class Conversion, Irish Destroyer Escort laid down 1917 (Engine 1937)[/SIZE]
Displacement:
879 t light; 925 t standard; 1,075 t normal; 1,196 t full load
Dimensions: Length overall / water x beam x draught
280.06 ft / 276.00 ft x 26.75 ft x 10.80 ft (normal load)
85.36 m / 84.12 m x 8.15 m x 3.29 m
Armament:
6 - 3.70" / 94.0 mm guns (3x2 guns), 25.33lbs / 11.49kg shells, 1937 Model
Dual purpose guns in deck mounts
on centreline, evenly spread
Aft Main mounts separated by engine room
2 - 1.57" / 40.0 mm guns (1x2 guns), 1.95lbs / 0.88kg shells, 1937 Model
Anti-aircraft guns in deck mount
on centreline forward, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
4 - 0.30" / 7.7 mm guns (2x2 guns), 0.01lbs / 0.01kg shells, 1937 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 164 lbs / 74 kg
Shells per gun, main battery: 250
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.59" -
- Conning tower: 0.79" / 20 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 19,266 shp / 14,372 Kw = 30.00 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 271 tons
Complement:
93 - 122
Cost:
£0.206 million / $0.823 million
Distribution of weights at normal displacement:
Armament: 20 tons, 1.9 %
Armour: 18 tons, 1.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 16 tons, 1.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 466 tons, 43.3 %
Hull, fittings & equipment: 345 tons, 32.1 %
Fuel, ammunition & stores: 196 tons, 18.2 %
Miscellaneous weights: 30 tons, 2.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
422 lbs / 191 Kg = 16.7 x 3.7 " / 94 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.32
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.472
Length to Beam Ratio: 10.32 : 1
'Natural speed' for length: 18.98 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 53
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: 23.00 ft / 7.01 m
- Forecastle (25 %): 20.00 ft / 6.10 m (13.00 ft / 3.96 m aft of break)
- Mid (50 %): 13.00 ft / 3.96 m
- Quarterdeck (15 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 15.05 ft / 4.59 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 158.6 %
- Above water (accommodation/working, high = better): 83.2 %
Waterplane Area: 4,986 Square feet or 463 Square metres
Displacement factor (Displacement / loading): 84 %
Structure weight / hull surface area: 28 lbs/sq ft or 137 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.53
- Longitudinal: 4.45
- Overall: 0.65
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
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