Ger/CS/1909, Germany Scout Cruiser laid down 1909 (Engine 1941) Displacement: 1,574 t light; 1,631 t standard; 1,800 t normal; 1,935 t full load Dimensions: Length overall / water x beam x draught 350.45 ft / 350.00 ft x 37.00 ft x 12.00 ft (normal load) 106.82 m / 106.68 m x 11.28 m x 3.66 m Armament: 4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1909 Model Quick firing guns in deck mounts with hoists on centreline, evenly spread Aft Main mounts separated by engine room Weight of broadside 250 lbs / 113 kg Shells per gun, main battery: 150 2 - 21.0" / 533.4 mm above water torpedoes Machinery: Oil fired boilers, steam turbines, Direct drive, 2 shafts, 52,349 shp / 39,052 Kw = 35.00 kts Range 4,000nm at 15.00 kts Bunker at max displacement = 305 tons Complement: 137 - 179 Cost: £0.221 million / $0.882 million Distribution of weights at normal displacement: Armament: 31 tons, 1.7 % Machinery: 994 tons, 55.2 % Hull, fittings & equipment: 549 tons, 30.5 % Fuel, ammunition & stores: 226 tons, 12.6 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 459 lbs / 208 Kg = 7.3 x 5.0 " / 127 mm shells or 0.3 torpedoes Stability (Unstable if below 1.00): 1.47 Metacentric height 2.2 ft / 0.7 m Roll period: 10.5 seconds Steadiness - As gun platform (Average = 50 %): 51 % - Recoil effect (Restricted arc if above 1.00): 0.27 Seaboat quality (Average = 1.00): 1.02 Hull form characteristics: Hull has raised forecastle, rise forward of midbreak Block coefficient: 0.405 Length to Beam Ratio: 9.46 : 1 'Natural speed' for length: 18.71 kts Power going to wave formation at top speed: 70 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 1.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 26.00 ft / 7.92 m - Forecastle (20 %): 22.00 ft / 6.71 m (21.00 ft / 6.40 m aft of break) - Mid (32 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break) - Quarterdeck (15 %): 14.00 ft / 4.27 m - Stern: 14.00 ft / 4.27 m - Average freeboard: 16.82 ft / 5.13 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 191.4 % - Above water (accommodation/working, high = better): 152.8 % Waterplane Area: 7,997 Square feet or 743 Square metres Displacement factor (Displacement / loading): 60 % Structure weight / hull surface area: 34 lbs/sq ft or 165 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.44 - Longitudinal: 2.42 - Overall: 0.52 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent
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Tuesday, August 30, 2005
I have a very German-looking drawing of the Ger/CS/1909
In the Fall of 2001, I did a series of German-looking drawings for ship designs from the 1971 building program game. I just did a Springsharp design for the Ger/CS/1909 design that works out pretty well. Springsharp is challenged by destroyer-type ships, and I needed to do two things to make the design work. The main issue was seakeeping ability. To achieve adequate performance, I needed to lighten the machinery by advancing the date and I needed to increase the freeboard by several feet. That was sufficient. I had originally struggled with this ship and had lowered speed and increased the draft abnormally. An odd feature of Springsharp is that it looks at the armament settings for guns in the list that are set to zero and gives warning messages. Here is the Springsharp report:
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