GB/CL/1927, Great Britain Scout Cruiser laid down 1927 (Engine 1950) Displacement: 3,093 t light; 3,204 t standard; 3,450 t normal; 3,647 t full load Dimensions: Length overall / water x beam x draught 440.36 ft / 435.00 ft x 41.00 ft x 16.00 ft (normal load) 134.22 m / 132.59 m x 12.50 m x 4.88 m Armament: 6 - 5.10" / 130 mm guns (3x2 guns), 66.33lbs / 30.08kg shells, 1927 Model Dual purpose guns in deck mounts with hoists on centreline ends, majority forward, 1 raised mount - superfiring 8 - 2.24" / 57.0 mm guns (4x2 guns), 5.65lbs / 2.56kg shells, 1927 Model Anti-aircraft guns in deck mounts with hoists on side, all amidships, all raised mounts - superfiring 12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.89kg shells, 1927 Model Anti-aircraft guns in deck mounts on side, evenly spread, 4 raised mounts Weight of broadside 467 lbs / 212 kg Shells per gun, main battery: 150 8 - 21.0" / 533.4 mm above water torpedoes Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 98,493 shp / 73,476 Kw = 38.00 kts Range 4,200nm at 15.00 kts Bunker at max displacement = 443 tons Complement: 224 - 292 Cost: £1.629 million / $6.518 million Distribution of weights at normal displacement: Armament: 58 tons, 1.7 % Machinery: 2,077 tons, 60.2 % Hull, fittings & equipment: 957 tons, 27.7 % Fuel, ammunition & stores: 357 tons, 10.4 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 676 lbs / 307 Kg = 10.2 x 5.1 " / 130 mm shells or 0.3 torpedoes Stability (Unstable if below 1.00): 1.50 Metacentric height 2.6 ft / 0.8 m Roll period: 10.6 seconds Steadiness - As gun platform (Average = 50 %): 52 % - Recoil effect (Restricted arc if above 1.00): 0.37 Seaboat quality (Average = 1.00): 1.04 Hull form characteristics: Hull has raised forecastle, rise forward of midbreak Block coefficient: 0.423 Length to Beam Ratio: 10.61 : 1 'Natural speed' for length: 20.86 kts Power going to wave formation at top speed: 68 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 5.00 degrees Stern overhang: 3.00 ft / 0.91 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 27.00 ft / 8.23 m - Forecastle (20 %): 23.00 ft / 7.01 m (21.00 ft / 6.40 m aft of break) - Mid (50 %): 19.00 ft / 5.79 m (17.00 ft / 5.18 m aft of break) - Quarterdeck (15 %): 15.00 ft / 4.57 m - Stern: 15.00 ft / 4.57 m - Average freeboard: 18.77 ft / 5.72 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 207.1 % - Above water (accommodation/working, high = better): 116.8 % Waterplane Area: 11,144 Square feet or 1,035 Square metres Displacement factor (Displacement / loading): 67 % Structure weight / hull surface area: 40 lbs/sq ft or 198 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.45 - Longitudinal: 2.01 - Overall: 0.52 Hull space for machinery, storage, compartmentation is extremely poor Room for accommodation and workspaces is adequate
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Thursday, November 17, 2005
A more satisfactory high-speed scout
Springsharp let me achieve a better high-speed scout by going to a smaller displacement. That way, I was able to get a 38 knot maximum speed with a 15 knot cruising speed. The armament is 6-13cm DP guns, 8-57mm AA, and 12-40mm AA guns with 8-21in TT. There is no protection. This allows a better ship to be designed on a normal displacement of 3,450 tons. This is more of a super destroyer, which was what was intended, anyway. This is the Springsharp report:
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