Lion, Great Britain Battlecruiser laid down 1912 Displacement: 24,566 t light; 25,668 t standard; 28,900 t normal; 31,485 t full load Dimensions: Length overall / water x beam x draught 700.91 ft / 700.00 ft x 88.00 ft x 27.00 ft (normal load) 213.64 m / 213.36 m x 26.82 m x 8.23 m Armament: 8 - 13.50" / 343 mm guns (3 mounts), 1,230.19lbs / 558.00kg shells, 1912 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring 16 - 4.00" / 102 mm guns (8x2 guns), 32.00lbs / 14.51kg shells, 1912 Model Quick firing guns in deck mounts with hoists on side, evenly spread, all raised mounts Weight of broadside 10,354 lbs / 4,696 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 9.00" / 229 mm 440.00 ft / 134.11 m 16.00 ft / 4.88 m Ends: 5.00" / 127 mm 260.00 ft / 79.25 m 12.00 ft / 3.66 m Main Belt covers 97 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 2.00" / 51 mm 440.00 ft / 134.11 m 27.00 ft / 8.23 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 9.00" / 229 mm 7.00" / 178 mm 9.00" / 229 mm 2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm - Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 96,584 shp / 72,051 Kw = 28.00 kts Range 5,700nm at 18.00 kts Bunker at max displacement = 5,817 tons Complement: 1,107 - 1,440 Cost: £2.486 million / $9.944 million Distribution of weights at normal displacement: Armament: 1,294 tons, 4.5 % Armour: 8,769 tons, 30.3 % - Belts: 3,304 tons, 11.4 % - Torpedo bulkhead: 879 tons, 3.0 % - Armament: 1,885 tons, 6.5 % - Armour Deck: 2,520 tons, 8.7 % - Conning Tower: 183 tons, 0.6 % Machinery: 3,851 tons, 13.3 % Hull, fittings & equipment: 10,651 tons, 36.9 % Fuel, ammunition & stores: 4,334 tons, 15.0 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 37,875 lbs / 17,180 Kg = 30.8 x 13.5 " / 343 mm shells or 5.6 torpedoes Stability (Unstable if below 1.00): 1.19 Metacentric height 5.7 ft / 1.7 m Roll period: 15.5 seconds Steadiness - As gun platform (Average = 50 %): 52 % - Recoil effect (Restricted arc if above 1.00): 0.55 Seaboat quality (Average = 1.00): 1.04 Hull form characteristics: Hull has a flush deck Block coefficient: 0.608 Length to Beam Ratio: 7.95 : 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): 2.00 degrees Stern overhang: -2.00 ft / -0.61 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 26.00 ft / 7.92 m - Forecastle (20 %): 19.00 ft / 5.79 m - Mid (50 %): 19.00 ft / 5.79 m - Quarterdeck (15 %): 19.00 ft / 5.79 m - Stern: 19.00 ft / 5.79 m - Average freeboard: 19.56 ft / 5.96 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 99.7 % - Above water (accommodation/working, high = better): 148.4 % Waterplane Area: 45,398 Square feet or 4,218 Square metres Displacement factor (Displacement / loading): 108 % Structure weight / hull surface area: 168 lbs/sq ft or 818 Kg/sq metre Hull strength (Relative): - Cross-sectional: 1.00 - Longitudinal: 1.05 - Overall: 1.00 Hull space for machinery, storage, compartmentation is adequate Room for accommodation and workspaces is excellent
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Wednesday, January 17, 2007
A version of the anachronistic Lion with oil-fired boilers
As you might expect, the anachronistic version of the Lion, when given oil-fired boilers, is more capable. My choice is to mostly use the added capability to provide an 18 knot cruising speed for 5,700nm. I hesitate to give the ship a higher maximum speed, given the relatively low freeboard. This is the Springsharp report:
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