GB/DL/1908, Great Britain Destroyer Leader laid down 1908 (Engine 1943)
Displacement:
1,859 t light; 1,922 t standard; 2,149 t normal; 2,330 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(374.63 ft / 372.00 ft) x 36.00 ft x (12.00 / 12.73 ft)
(114.19 m / 113.39 m) x 10.97 m x (3.66 / 3.88 m)
Armament:
6 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
Quick firing guns in deck and hoist mounts, 1908 Model
2 x Single mounts on centreline ends, evenly spread
4 x Single mounts on sides, evenly spread
Weight of broadside 194 lbs / 88 kg
4 - 18.0" / 457 mm, 21.00 ft / 6.40 m torpedoes - 0.985 t each, 3.938 t total
In 4 sets of deck mounted side rotating tubes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 58,041 shp / 43,298 Kw = 35.00 kts
Range 4,200nm at 16.00 kts
Bunker at max displacement = 408 tons
Complement:
157 - 205
Cost:
£0.251 million / $1.003 million
Distribution of weights at normal displacement:
Armament: 57 tons, 2.7 %
- Guns: 53 tons, 2.5 %
- Torpedoes: 4 tons, 0.2 %
Armour: 37 tons, 1.7 %
- Armament: 37 tons, 1.7 %
Machinery: 1,192 tons, 55.5 %
Hull, fittings & equipment: 573 tons, 26.7 %
Fuel, ammunition & stores: 290 tons, 13.5 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
537 lbs / 244 Kg = 16.8 x 4.0 " / 102 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 1.8 ft / 0.6 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.07
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.468 / 0.478
Length to Beam Ratio: 10.33 : 1
'Natural speed' for length: 19.29 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 6.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 18.00 %, 25.00 ft / 7.62 m, 23.00 ft / 7.01 m
- Forward deck: 14.00 %, 23.00 ft / 7.01 m, 23.00 ft / 7.01 m
- Aft deck: 53.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Quarter deck: 15.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Average freeboard: 17.70 ft / 5.40 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 187.0 %
- Above water (accommodation/working, high = better): 168.1 %
Waterplane Area: 8,673 Square feet or 806 Square metres
Displacement factor (Displacement / loading): 67 %
Structure weight / hull surface area: 32 lbs/sq ft or 157 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.44
- Longitudinal: 2.27
- Overall: 0.52
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Thursday, February 07, 2008
A British super destroyer for 1908
One of my ongoing interest, since the late 1960's has been super destroyers from the period starting in 1905 and beyond. I think that I had been inspired by what I had found out about the big German destroyers from late in the Great War. My 1908 design is for a British ship with 6-4in QF guns and 4-18in TT. The designed speed is 35 knots. This is the Springsharp report:
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