Ger/BB/1909A, Germany Enter ship type laid down 1909 Displacement: 27,603 t light; 28,674 t standard; 31,587 t normal; 33,917 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, evenly spread, all raised mounts Aft Main mounts separated by engine room 8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model Quick firing guns in deck mounts on side, evenly spread, all raised mounts 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 395.00 ft / 120.40 m 12.00 ft / 3.66 m Ends: Unarmoured Main Belt covers 94 % of normal length - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.0" / 356 mm 6.00" / 152 mm 14.0" / 356 mm 2nd: 2.00" / 51 mm - - - Armour deck: 5.00" / 127 mm, Conning tower: 14.00" / 356 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 67,534 shp / 50,380 Kw = 25.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 5,244 tons Complement: 1,184 - 1,540 Cost: £2.303 million / $9.212 million Distribution of weights at normal displacement: Armament: 1,080 tons, 3.4 % Armour: 10,652 tons, 33.7 % - Belts: 2,949 tons, 9.3 % - Torpedo bulkhead: 0 tons, 0.0 % - Armament: 3,033 tons, 9.6 % - Armour Deck: 4,368 tons, 13.8 % - Conning Tower: 301 tons, 1.0 % Machinery: 3,070 tons, 9.7 % Hull, fittings & equipment: 12,801 tons, 40.5 % Fuel, ammunition & stores: 3,984 tons, 12.6 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 61,039 lbs / 27,687 Kg = 70.6 x 12.0 " / 305 mm shells or 5.7 torpedoes Stability (Unstable if below 1.00): 1.04 Metacentric height 5.9 ft / 1.8 m Roll period: 18.4 seconds Steadiness - As gun platform (Average = 50 %): 86 % - Recoil effect (Restricted arc if above 1.00): 0.66 Seaboat quality (Average = 1.00): 1.73 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.539 Length to Beam Ratio: 6.08 : 1 'Natural speed' for length: 25.40 kts Power going to wave formation at top speed: 49 % 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: 31.00 ft / 9.45 m - Forecastle (20 %): 30.00 ft / 9.14 m - Mid (72 %): 30.00 ft / 9.14 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: 27.28 ft / 8.31 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 57.9 % - Above water (accommodation/working, high = better): 212.7 % Waterplane Area: 47,226 Square feet or 4,387 Square metres Displacement factor (Displacement / loading): 124 % Structure weight / hull surface area: 188 lbs/sq ft or 920 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.91 - Longitudinal: 2.28 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent 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
Amazon Ad
Saturday, January 08, 2005
The Ger/BB/1909A design is another good one
The Ger/BB/1909A design actually outperformed what I had calculated back in the the early 1970's. I was able to have about the same displacement and still have a 14in armor basis, with 25 knot speed. The armament is 9-12in guns in triple turrets: two forward and one aft. The secondary armament is too light, but what I had though adequate at the time: 8-6in QF. Too boot, it is a good seaboat. This is the report:
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment