Amazon Ad

Saturday, July 12, 2008

Another try at a Super Lion (GB/CB/1912)

This version of the Super Lion design is so good, there must be something wrong with the specification. This is a 30-knot battlecruiser with 10-15in/42 and 14-6in/50 QF guns, a 12in belt, 3in deck, and 7,500nm range:
GB/CB/1912 Super Lion, Great Britain Battlecruiser laid down 1912 (Engine 1918)

Displacement:
 41,153 t light; 43,216 t standard; 47,751 t normal; 51,378 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (823.00 ft / 815.00 ft) x 105.00 ft x (31.00 / 32.97 ft)
 (250.85 m / 248.41 m) x 32.00 m  x (9.45 / 10.05 m)

Armament:
      10 - 15.00" / 381 mm 42.0 cal guns - 1,950.00lbs / 884.51kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts, 1912 Model
   4 x Twin mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
   1 x Twin mount on centreline, aft deck forward
      14 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Quick firing guns in casemate mounts, 1912 Model
   14 x Single mounts on sides, evenly spread
  14 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 21,101 lbs / 9,571 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 525.00 ft / 160.02 m 9.00 ft / 2.74 m
 Ends: 5.00" / 127 mm 290.00 ft / 88.39 m 16.00 ft / 4.88 m
 Upper: 8.00" / 203 mm 525.00 ft / 160.02 m 8.00 ft / 2.44 m
   Main Belt covers 99 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead - Additional damage containing bulkheads:
  1.50" / 38 mm 525.00 ft / 160.02 m 31.00 ft / 9.45 m
 Beam between torpedo bulkheads 72.00 ft / 21.95 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 12.0" / 305 mm 8.00" / 203 mm  12.0" / 305 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armoured deck - multiple decks:
 For and Aft decks: 3.00" / 76 mm
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 12.00" / 305 mm, Aft 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 165,755 shp / 123,653 Kw = 30.00 kts
 Range 7,500nm at 18.00 kts
 Bunker at max displacement = 8,162 tons

Complement:
 1,614 - 2,099

Cost:
 £3.785 million / $15.142 million

Distribution of weights at normal displacement:
 Armament: 2,838 tons, 5.9 %
    - Guns: 2,838 tons, 5.9 %
 Armour: 14,193 tons, 29.7 %
    - Belts: 4,720 tons, 9.9 %
    - Torpedo bulkhead: 903 tons, 1.9 %
    - Armament: 4,407 tons, 9.2 %
    - Armour Deck: 3,596 tons, 7.5 %
    - Conning Towers: 567 tons, 1.2 %
 Machinery: 5,980 tons, 12.5 %
 Hull, fittings & equipment: 18,143 tons, 38.0 %
 Fuel, ammunition & stores: 6,598 tons, 13.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   77,044 lbs / 34,946 Kg = 45.7 x 15.0 " / 381 mm shells or 10.3 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 6.8 ft / 2.1 m
 Roll period: 16.9 seconds
 Steadiness - As gun platform (Average = 50 %): 61 %
   - Recoil effect (Restricted arc if above 1.00): 0.94
 Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
 Hull has low quarterdeck ,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.630 / 0.637
 Length to Beam Ratio: 7.76 : 1
 'Natural speed' for length: 28.55 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  31.00 ft / 9.45 m,  30.00 ft / 9.14 m
    - Forward deck: 30.00 %,  30.00 ft / 9.14 m,  29.00 ft / 8.84 m
    - Aft deck: 18.00 %,  29.00 ft / 8.84 m,  29.00 ft / 8.84 m
    - Quarter deck: 27.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
    - Average freeboard:  27.34 ft / 8.33 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 102.3 %
  - Above water (accommodation/working, high = better): 222.6 %
 Waterplane Area: 64,359 Square feet or 5,979 Square metres
 Displacement factor (Displacement / loading): 118 %
 Structure weight / hull surface area: 209 lbs/sq ft or 1,020 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.29
  - Overall: 1.00
 Adequate machinery, storage, compartmentation space
 Excellent accommodation and workspace room
 Good seaboat, rides out heavy weather easily

No comments:

Amazon Context Links