Ger/CB/1905a2, Enter country Enter ship type laid down 1905 Displacement: 20,034 t light; 20,665 t standard; 22,799 t normal; 24,507 t full load Dimensions: Length overall / water x beam x draught 700.00 ft / 700.00 ft x 80.00 ft x 24.40 ft (normal load) 213.36 m / 213.36 m x 24.38 m x 7.44 m Armament: 4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, all raised mounts 12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model Quick firing guns in casemate mounts on side, evenly spread, all raised mounts Weight of broadside 3,840 lbs / 1,742 kg Shells per gun, main battery: 80 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 4.00" / 102 mm 375.00 ft / 114.30 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 82 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 1.00" / 25 mm 375.00 ft / 114.30 m 22.00 ft / 6.71 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 9.00" / 229 mm 7.00" / 178 mm 6.00" / 152 mm 2nd: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm - Armour deck: 3.00" / 76 mm, Conning tower: 4.00" / 102 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 93,945 shp / 70,083 Kw = 29.00 kts Range 4,500nm at 15.00 kts Bunker at max displacement = 3,842 tons Complement: 927 - 1,206 Cost: £2.101 million / $8.403 million Distribution of weights at normal displacement: Armament: 480 tons, 2.1 % Armour: 4,459 tons, 19.6 % - Belts: 1,051 tons, 4.6 % - Torpedo bulkhead: 305 tons, 1.3 % - Armament: 794 tons, 3.5 % - Armour Deck: 2,239 tons, 9.8 % - Conning Tower: 69 tons, 0.3 % Machinery: 7,117 tons, 31.2 % Hull, fittings & equipment: 7,978 tons, 35.0 % Fuel, ammunition & stores: 2,765 tons, 12.1 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 18,864 lbs / 8,556 Kg = 21.8 x 12.0 " / 305 mm shells or 2.3 torpedoes Stability (Unstable if below 1.00): 1.30 Metacentric height 5.7 ft / 1.7 m Roll period: 14.0 seconds Steadiness - As gun platform (Average = 50 %): 64 % - Recoil effect (Restricted arc if above 1.00): 0.34 Seaboat quality (Average = 1.00): 1.28 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.584 Length to Beam Ratio: 8.75 : 1 'Natural speed' for length: 26.46 kts Power going to wave formation at top speed: 51 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): -1.00 degrees Stern overhang: -1.00 ft / -0.30 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 32.00 ft / 9.75 m - Forecastle (20 %): 30.00 ft / 9.14 m - Mid (50 %): 30.00 ft / 9.14 m (0.00 ft / 0.00 m aft of break) - Quarterdeck (15 %): 21.00 ft / 6.40 m - Stern: 21.00 ft / 6.40 m - Average freeboard: 21.99 ft / 6.70 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 155.9 % - Above water (accommodation/working, high = better): 161.7 % Waterplane Area: 40,349 Square feet or 3,749 Square metres Displacement factor (Displacement / loading): 101 % Structure weight / hull surface area: 135 lbs/sq ft or 657 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.99 - Longitudinal: 1.04 - Overall: 1.00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent Good seaboat, rides out heavy weather easily
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Thursday, January 13, 2005
I just took another try at my Ger/CB/1905 design
Springsharp says of my Ger/CB/1905 design: "Good seaboat, rides out heavy weather easily". Springsharp also says: "Design well balanced for a battleship or cruiser". The only thing that I didn't care for was having to bloat the displacement to achieve sufficient hull strength: 22,799 tons, normal load. I was able to fill in almost the exact details from a good drawing from 18 July 1973. The only complaint was cramped space below the waterline, and that is not as severe as sometimes.
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