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Thursday, April 28, 2005

My new "Super Lion" design (1912)

I rethought the Super Lion design, as I have a photo in work that I will eventually post. The basic specs are 30 knots, 10-15in guns and I added 9in side armor. This is the Springsharp report. The displacement is greater than I had hoped.
Super Lion , Great Britain Enter ship type laid down 1912 (Engine 1931)

Displacement:
 36,964 t light; 38,744 t standard; 42,406 t normal; 45,335 t full load

Dimensions: Length overall / water x beam x draught
 812.00 ft / 812.00 ft x 102.00 ft x 32.00 ft (normal load)
 247.50 m / 247.50 m x 31.09 m  x 9.75 m

Armament:
      10 - 15.00" / 381 mm guns (5x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority aft, all raised mounts - superfiring
      14 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
   14 guns in hull casemates - Limited use in heavy seas
 Weight of broadside 18,387 lbs / 8,340 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 9.00" / 229 mm 550.00 ft / 167.64 m 17.00 ft / 5.18 m
 Ends: 5.00" / 127 mm 262.00 ft / 79.86 m 17.00 ft / 5.18 m
   Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 550.00 ft / 167.64 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 7.00" / 178 mm  9.00" / 229 mm
 2nd: 4.00" / 102 mm       -         -

   - Armour deck: 3.00" / 76 mm, Conning tower: 7.00" / 178 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 149,111 shp / 111,237 Kw = 30.00 kts
 Range 12,000nm at 15.00 kts
 Bunker at max displacement = 6,591 tons

Complement:
 1,476 - 1,920

Cost:
 £3.849 million / $15.395 million

Distribution of weights at normal displacement:
 Armament: 2,298 tons, 5.4 %
 Armour: 12,364 tons, 29.2 %
    - Belts: 4,386 tons, 10.3 %
    - Torpedo bulkhead: 1,099 tons, 2.6 %
    - Armament: 3,458 tons, 8.2 %
    - Armour Deck: 3,238 tons, 7.6 %
    - Conning Tower: 183 tons, 0.4 %
 Machinery: 4,459 tons, 10.5 %
 Hull, fittings & equipment: 17,842 tons, 42.1 %
 Fuel, ammunition & stores: 5,442 tons, 12.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   56,854 lbs / 25,788 Kg = 33.7 x 15.0 " / 381 mm shells or 8.1 torpedoes
 Stability (Unstable if below 1.00): 1.04
 Metacentric height 5.5 ft / 1.7 m
 Roll period: 18.2 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.97
 Seaboat quality  (Average = 1.00): 1.14

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.560
 Length to Beam Ratio: 7.96 : 1
 'Natural speed' for length: 28.50 kts
 Power going to wave formation at top speed: 50 %
 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:  30.00 ft / 9.14 m
    - Forecastle (20 %): 27.00 ft / 8.23 m
    - Mid (67 %):  27.00 ft / 8.23 m (19.00 ft / 5.79 m aft of break)
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 24.60 ft / 7.50 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 93.2 %
  - Above water (accommodation/working, high = better): 186.6 %
 Waterplane Area: 58,347 Square feet or 5,421 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 212 lbs/sq ft or 1,033 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.21
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent

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