Amazon Ad

Monday, October 29, 2007

An "expanded" version of a "Super Lion" fast battleship

I have a photograph of my "Super Lion" design hanging on the wall, and I was thinking that a version with 10-16in guns would be interesting. A length of 855ft is sort of a classic dimension, so I decided that would work for this ship. This is very much a early WWI-style ship, with the older look, rather than the 1921 look. The displacement is quite large, but the power needed is not excessive. I much prefer the William Hovgaard style "battleship-cruiser" over the lightly protected Fisher battlecruiser. This is the Springsharp report:
Expanded "Super Lion", Great Britain Battleship laid down 1916 (Engine 1937)

Displacement:
 48,833 t light; 51,083 t standard; 55,033 t normal; 58,192 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (863.00 ft / 855.00 ft) x 110.00 ft x (32.00 / 33.55 ft)
 (263.04 m / 260.60 m) x 33.53 m  x (9.75 / 10.23 m)

Armament:
      10 - 16.00" / 406 mm 45.0 cal guns - 2,065.00lbs / 936.67kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts, 1916 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 45.0 cal guns - 100.00lbs / 45.36kg shells, 150 per gun
   Quick firing guns in casemate mounts, 1916 Model
   8 x Single mounts on sides, forward deck aft
  8 hull mounts in casemates- Limited use in heavy seas
   6 x Single mounts on sides, aft deck forward
  6 hull mounts in lower casemates- Limited use in heavy seas
      Weight of broadside 22,050 lbs / 10,002 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 540.00 ft / 164.59 m 9.00 ft / 2.74 m
 Ends: 6.00" / 152 mm 300.00 ft / 91.44 m 12.00 ft / 3.66 m
   15.00 ft / 4.57 m Unarmoured ends
 Upper: 11.0" / 279 mm 540.00 ft / 164.59 m 8.00 ft / 2.44 m
   Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 540.00 ft / 164.59 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 15.0" / 381 mm 10.0" / 254 mm  15.0" / 381 mm
 2nd: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm

   - Armoured deck - multiple decks: 4.00" / 102 mm For and Aft decks
 Forecastle: 4.00" / 102 mm  Quarter deck: 4.00" / 102 mm

   - Conning towers: Forward 14.00" / 356 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 178,635 shp / 133,262 Kw = 30.00 kts
 Range 7,500nm at 18.00 kts
 Bunker at max displacement = 7,109 tons

Complement:
 1,796 - 2,335

Cost:
 £7.199 million / $28.797 million

Distribution of weights at normal displacement:
 Armament: 3,609 tons, 6.6 %
 Armour: 19,959 tons, 36.3 %
    - Belts: 5,759 tons, 10.5 %
    - Torpedo bulkhead: 2,557 tons, 4.6 %
    - Armament: 5,889 tons, 10.7 %
    - Armour Deck: 5,317 tons, 9.7 %
    - Conning Tower: 436 tons, 0.8 %
 Machinery: 4,951 tons, 9.0 %
 Hull, fittings & equipment: 20,315 tons, 36.9 %
 Fuel, ammunition & stores: 6,199 tons, 11.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   95,929 lbs / 43,513 Kg = 46.8 x 16.0 " / 406 mm shells or 16.7 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 6.9 ft / 2.1 m
 Roll period: 17.5 seconds
 Steadiness - As gun platform (Average = 50 %): 60 %
   - Recoil effect (Restricted arc if above 1.00): 0.84
 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): 0.640 / 0.645
 Length to Beam Ratio: 7.77 : 1
 'Natural speed' for length: 29.24 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 (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  32.00 ft / 9.75 m,  29.00 ft / 8.84 m
    - Forward deck: 25.00 %,  29.00 ft / 8.84 m,  29.00 ft / 8.84 m
    - Aft deck: 20.00 %,  29.00 ft / 8.84 m,  29.00 ft / 8.84 m
    - Quarter deck: 30.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
    - Average freeboard:  26.90 ft / 8.20 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 76.4 %
  - Above water (accommodation/working, high = better): 219.6 %
 Waterplane Area: 71,389 Square feet or 6,632 Square metres
 Displacement factor (Displacement / loading): 113 %
 Structure weight / hull surface area: 215 lbs/sq ft or 1,052 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.20
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily

No comments:

Amazon Context Links