Ger/CS/1905, Germany CL laid down 1905 (Engine 1908) Displacement: 2,150 t light; 2,213 t standard; 2,475 t normal; 2,685 t full load Dimensions: Length overall / water x beam x draught 372.76 ft / 370.00 ft x 38.00 ft x 13.00 ft (normal load) 113.62 m / 112.78 m x 11.58 m x 3.96 m Armament: 5 - 4.00" / 102 mm guns (3 mounts), 32.00lbs / 14.51kg shells, 1905 Model Quick firing guns in deck mounts on centreline ends, majority forward, all raised mounts - superfiring Weight of broadside 160 lbs / 73 kg Shells per gun, main battery: 150 2 - 21.0" / 533.4 mm above water torpedoes Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 2.00" / 51 mm 165.00 ft / 50.29 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 69 % of normal length Main belt does not fully cover magazines and engineering spaces - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 1.00" / 25 mm - - Machinery: Oil fired boilers, steam turbines, Direct drive, 2 shafts, 33,411 shp / 24,925 Kw = 30.00 kts Range 2,500nm at 15.00 kts Bunker at max displacement = 472 tons Complement: 175 - 228 Cost: £0.283 million / $1.131 million Distribution of weights at normal displacement: Armament: 20 tons, 0.8 % Armour: 246 tons, 9.9 % - Belts: 235 tons, 9.5 % - Torpedo bulkhead: 0 tons, 0.0 % - Armament: 11 tons, 0.4 % - Armour Deck: 0 tons, 0.0 % - Conning Tower: 0 tons, 0.0 % Machinery: 1,363 tons, 55.0 % Hull, fittings & equipment: 522 tons, 21.1 % Fuel, ammunition & stores: 325 tons, 13.1 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 614 lbs / 279 Kg = 19.2 x 4.0 " / 102 mm shells or 0.3 torpedoes Stability (Unstable if below 1.00): 1.58 Metacentric height 2.5 ft / 0.8 m Roll period: 10.0 seconds Steadiness - As gun platform (Average = 50 %): 88 % - Recoil effect (Restricted arc if above 1.00): 0.12 Seaboat quality (Average = 1.00): 1.52 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.474 Length to Beam Ratio: 9.74 : 1 'Natural speed' for length: 19.24 kts Power going to wave formation at top speed: 63 % Trim (Max stability = 0, Max steadiness = 100): 58 Bow angle (Positive = bow angles forward): 3.00 degrees Stern overhang: 1.50 ft / 0.46 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 24.00 ft / 7.32 m - Forecastle (20 %): 23.00 ft / 7.01 m - Mid (33 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break) - Quarterdeck (15 %): 14.00 ft / 4.27 m - Stern: 15.00 ft / 4.57 m - Average freeboard: 17.06 ft / 5.20 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 183.9 % - Above water (accommodation/working, high = better): 141.1 % Waterplane Area: 9,153 Square feet or 850 Square metres Displacement factor (Displacement / loading): 65 % Structure weight / hull surface area: 29 lbs/sq ft or 139 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.44 - Longitudinal: 1.67 - Overall: 0.50 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent Ship has slow, easy roll, a good, steady gun platform Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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Wednesday, January 05, 2005
I redid my Ger/CS/1905 design
Given what I learned about Springsharp, I redid my design for the Ger/CS/1905 scout cruiser. By reducing the speed way down to 30 knots, I was able to use my original dimensions and give them the 2in Belt over the machinery spaces. I had thought that I would have to accept 29 knots, but 30 knots is not so bad, given the date of the design. Admittedly, I wanted to have too light a machinery for 1905, although I don't think that what I want is out of line. This is the Springsharp report:
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