Super Lion, Great Britain Battlecruiser laid down 1912 (Engine 1916) Displacement: 34,200 t light; 35,780 t standard; 38,300 t normal; 40,316 t full load Dimensions: Length overall / water x beam x draught 800.00 ft / 800.00 ft x 97.00 ft x 27.00 ft (normal load) 243.84 m / 243.84 m x 29.57 m x 8.23 m Armament: 8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, 2 raised mounts - superfiring Main guns limited to end-on fire 2 - 15.00" / 381 mm guns (1x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model Breech loading guns in a turret (on a barbette) on centreline amidships 16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1912 Model Quick firing guns in deck mounts with hoists on side, evenly spread, 8 raised mounts Weight of broadside 17,875 lbs / 8,108 kg Shells per gun, main battery: 80 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 6.00" / 152 mm 500.00 ft / 152.40 m 17.00 ft / 5.18 m Ends: 5.00" / 127 mm 190.00 ft / 57.91 m 17.00 ft / 5.18 m 110.00 ft / 33.53 m Unarmoured ends Main Belt covers 96 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 1.00" / 25 mm 500.00 ft / 152.40 m 26.00 ft / 7.92 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 9.00" / 229 mm 5.00" / 127 mm 7.00" / 178 mm 2nd: 9.00" / 229 mm 5.00" / 127 mm 7.00" / 178 mm 3rd: 2.00" / 51 mm 2.00" / 51 mm 2.00" / 51 mm - Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 145,804 shp / 108,770 Kw = 30.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 4,537 tons Complement: 1,368 - 1,779 Cost: £3.834 million / $15.338 million Distribution of weights at normal displacement: Armament: 2,234 tons, 5.8 % Armour: 9,291 tons, 24.3 % - Belts: 2,789 tons, 7.3 % - Torpedo bulkhead: 481 tons, 1.3 % - Armament: 2,532 tons, 6.6 % - Armour Deck: 3,268 tons, 8.5 % - Conning Tower: 220 tons, 0.6 % Machinery: 5,432 tons, 14.2 % Hull, fittings & equipment: 17,243 tons, 45.0 % Fuel, ammunition & stores: 4,100 tons, 10.7 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 48,957 lbs / 22,206 Kg = 29.0 x 15.0 " / 381 mm shells or 5.5 torpedoes Stability (Unstable if below 1.00): 1.10 Metacentric height 5.8 ft / 1.8 m Roll period: 17.0 seconds Steadiness - As gun platform (Average = 50 %): 58 % - Recoil effect (Restricted arc if above 1.00): 1.06 Seaboat quality (Average = 1.00): 1.17 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.640 Length to Beam Ratio: 8.25 : 1 'Natural speed' for length: 28.28 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: 33.00 ft / 10.06 m - Forecastle (20 %): 29.00 ft / 8.84 m - Mid (67 %): 29.00 ft / 8.84 m (21.00 ft / 6.40 m aft of break) - Quarterdeck (15 %): 21.00 ft / 6.40 m - Stern: 21.00 ft / 6.40 m - Average freeboard: 26.68 ft / 8.13 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 112.6 % - Above water (accommodation/working, high = better): 219.6 % Waterplane Area: 58,891 Square feet or 5,471 Square metres Displacement factor (Displacement / loading): 101 % Structure weight / hull surface area: 206 lbs/sq ft or 1,003 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.98 - Longitudinal: 1.23 - Overall: 1.00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent
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Thursday, April 27, 2006
A Super Lion design from the Red book
The Red book has a Super Lion design with 10-15in BLR and 16-5in QF guns. The paper design was extremely over-optimistic about displacement and speed. By going very large, the design worked out very well. I say "going very large" in the sense of bloating the displacement. I scaled back the speed to 30 knots, which was Admiral Fisher's desired speed, anyway. I find the resulting ship very satisfactory, despite the rather thin side armour:
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