Ger/BB/1909A, Germany Battleship laid down 1909 Displacement: 29,537 t light; 30,650 t standard; 33,700 t normal; 36,140 t full load Dimensions: Length overall / water x beam x draught 645.00 ft / 645.00 ft x 106.00 ft x 30.00 ft (normal load) 196.60 m / 196.60 m x 32.31 m x 9.14 m Armament: 9 - 12.00" / 305 mm guns (3x3 guns), 864.00lbs / 391.90kg shells, 1909 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring 8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model Quick firing guns in deck mounts with hoists on side, all amidships Weight of broadside 8,640 lbs / 3,919 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 14.0" / 356 mm 375.00 ft / 114.30 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 89 % of normal length - Torpedo Bulkhead: 2.00" / 51 mm 375.00 ft / 114.30 m 30.00 ft / 9.14 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.0" / 356 mm 6.00" / 152 mm 14.0" / 356 mm 2nd: 4.00" / 102 mm 4.00" / 102 mm 4.00" / 102 mm - Armour deck: 5.00" / 127 mm, Conning tower: 14.00" / 356 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 96,837 shp / 72,240 Kw = 27.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 5,490 tons Complement: 1,243 - 1,616 Cost: £2.557 million / $10.229 million Distribution of weights at normal displacement: Armament: 1,080 tons, 3.2 % Armour: 12,054 tons, 35.8 % - Belts: 3,793 tons, 11.3 % - Torpedo bulkhead: 833 tons, 2.5 % - Armament: 2,595 tons, 7.7 % - Armour Deck: 4,519 tons, 13.4 % - Conning Tower: 315 tons, 0.9 % Machinery: 4,402 tons, 13.1 % Hull, fittings & equipment: 12,001 tons, 35.6 % Fuel, ammunition & stores: 4,163 tons, 12.4 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 56,245 lbs / 25,512 Kg = 65.1 x 12.0 " / 305 mm shells or 9.0 torpedoes Stability (Unstable if below 1.00): 1.18 Metacentric height 7.4 ft / 2.3 m Roll period: 16.3 seconds Steadiness - As gun platform (Average = 50 %): 67 % - Recoil effect (Restricted arc if above 1.00): 0.38 Seaboat quality (Average = 1.00): 1.34 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.575 Length to Beam Ratio: 6.08 : 1 'Natural speed' for length: 25.40 kts Power going to wave formation at top speed: 54 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 0.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 32.00 ft / 9.75 m - Forecastle (20 %): 28.00 ft / 8.53 m - Mid (65 %): 28.00 ft / 8.53 m (20.00 ft / 6.10 m aft of break) - Quarterdeck (15 %): 20.00 ft / 6.10 m - Stern: 20.00 ft / 6.10 m - Average freeboard: 25.52 ft / 7.78 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 82.6 % - Above water (accommodation/working, high = better): 191.2 % Waterplane Area: 48,850 Square feet or 4,538 Square metres Displacement factor (Displacement / loading): 114 % Structure weight / hull surface area: 175 lbs/sq ft or 852 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.94 - Longitudinal: 1.85 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent Good seaboat, rides out heavy weather easily
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Sunday, August 13, 2006
The Ger/BB/1909A battleship design
The Ger/BB/1909A design was intended to look more "German", as my friend Cliff had criticized my German designs for looking too "British". With an intended Standard displacement of 32,000 tons, the design was over-designed for the intended characteristics. The Springsharp design came out light, even after increasing the speed, with normal weight machinery, to 27 knots. The armour basis is 14in with a 5in deck. The armament is 9-12in/50 and 8-6in QF guns. For some reason, my secondary armaments at this time were inadequate. The protection came out heavy, even after omitting a second deck (which Springsharp really doesn't accommodate, anyway). The design is really more of a battleship-cruiser than normal battleship, as the speed is high, but with heavy armour. This is the Springsharp report:
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