Amazon Ad

Sunday, August 12, 2007

The long version of my Super Lion design from yesterday

In my specification for the Super Lion version that I designed yesterday, there was an alternate set of dimensions for a longer and narrower version: 814ft x 95ft x 28ft. I already knew, last night, that I wanted to try that version today:
GB/CB/1912 Super Lion (long), Great Britain Battlecruiser laid down 1912

Displacement:
 30,659 t light; 33,045 t standard; 36,376 t normal; 39,041 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (821.00 ft / 814.00 ft) x 95.00 ft x (28.00 / 29.67 ft)
 (250.24 m / 248.11 m) x 28.96 m  x (8.53 / 9.04 m)

Armament:
      10 - 15.00" / 381 mm 42.0 cal guns - 1,950.00lbs / 884.51kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts, 1912 Model
   4 x Single mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
   1 x Twin mount on centreline, aft deck forward
      12 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1912 Model
   6 x Twin mounts on sides, forward deck aft
      Weight of broadside 19,907 lbs / 9,029 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 530.00 ft / 161.54 m 9.00 ft / 2.74 m
 Ends: 4.00" / 102 mm 220.00 ft / 67.06 m 9.00 ft / 2.74 m
   64.00 ft / 19.51 m Unarmoured ends
   Main Belt covers 100 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 530.00 ft / 161.54 m 28.00 ft / 8.53 m

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

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

   - Conning towers: Forward 8.00" / 203 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 136,470 shp / 101,807 Kw = 30.00 kts
 Range 6,700nm at 16.00 kts
 Bunker at max displacement = 5,995 tons

Complement:
 1,316 - 1,712

Cost:
 £3.302 million / $13.210 million

Distribution of weights at normal displacement:
 Armament: 3,085 tons, 8.5 %
 Armour: 7,796 tons, 21.4 %
    - Belts: 1,494 tons, 4.1 %
    - Torpedo bulkhead: 824 tons, 2.3 %
    - Armament: 2,164 tons, 5.9 %
    - Armour Deck: 3,125 tons, 8.6 %
    - Conning Tower: 189 tons, 0.5 %
 Machinery: 5,441 tons, 15.0 %
 Hull, fittings & equipment: 14,337 tons, 39.4 %
 Fuel, ammunition & stores: 5,717 tons, 15.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   45,700 lbs / 20,729 Kg = 27.1 x 15.0 " / 381 mm shells or 5.7 torpedoes
 Stability (Unstable if below 1.00): 1.20
 Metacentric height 6.5 ft / 2.0 m
 Roll period: 15.7 seconds
 Steadiness - As gun platform (Average = 50 %): 56 %
   - Recoil effect (Restricted arc if above 1.00): 0.95
 Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
 Hull has rise forward of midbreak,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.588 / 0.596
 Length to Beam Ratio: 8.57 : 1
 'Natural speed' for length: 28.53 kts
 Power going to wave formation at top speed: 49 %
 Trim (Max stability = 0, Max steadiness = 100): 47
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -3.00 ft / -0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 36.00 %,  28.00 ft / 8.53 m,  25.00 ft / 7.62 m
    - Forward deck: 36.00 %,  25.00 ft / 7.62 m,  25.00 ft / 7.62 m
    - Aft deck: 13.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
    - Quarter deck: 15.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
    - Average freeboard:  23.19 ft / 7.07 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 110.7 %
  - Above water (accommodation/working, high = better): 185.2 %
 Waterplane Area: 55,926 Square feet or 5,196 Square metres
 Displacement factor (Displacement / loading): 111 %
 Structure weight / hull surface area: 197 lbs/sq ft or 964 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.99
  - Longitudinal: 1.11
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent

No comments:

Amazon Context Links