The very fast version of the GB/CB/1905 design

In 1973, I had redesigned the GB/CB/1905 and others into much faster ships. My system was faulty, in the sense that I had hoped that 218,000 SHP would produce 43.4 knots. With Springsharp, I was able to reach 35.5 knots with about that much power. The basic design was for a ship with 4-12in/45 and 9-6in QF guns. The armor belt was only 4in, although turrets and barbettes could be thicker. I did increase the deck armor to 3in. The displacement was 26,500 tons, instead of the original 25,000 tons. I also opted for lighter weight machinery. The dimensions are 770ft x 85ft x 26ft. This is the new Springsharp report:

GB/CB/1905 Very Fast, Great Britain Battlecruiser laid down 1905 (Engine 1923)

Displacement:
 23,849 t light; 24,583 t standard; 26,500 t normal; 28,034 t full load

Dimensions: Length overall / water x beam x draught
 770.00 ft / 770.00 ft x 85.00 ft x 26.00 ft (normal load)
 234.70 m / 234.70 m x 25.91 m  x 7.92 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      9 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing guns in deck mounts with hoists
   on side ends, majority aft
 Weight of broadside 4,428 lbs / 2,009 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 600.00 ft / 182.88 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 120 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 600.00 ft / 182.88 m 25.00 ft / 7.62 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 5.00" / 127 mm  8.00" / 203 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 218,457 shp / 162,969 Kw = 35.50 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 3,451 tons

Complement:
 1,038 - 1,350

Cost:
 £2.322 million / $9.287 million

Distribution of weights at normal displacement:
 Armament: 554 tons, 2.1 %
 Armour: 5,960 tons, 22.5 %
    - Belts: 1,667 tons, 6.3 %
    - Torpedo bulkhead: 833 tons, 3.1 %
    - Armament: 822 tons, 3.1 %
    - Armour Deck: 2,523 tons, 9.5 %
    - Conning Tower: 115 tons, 0.4 %
 Machinery: 7,301 tons, 27.6 %
 Hull, fittings & equipment: 10,034 tons, 37.9 %
 Fuel, ammunition & stores: 2,651 tons, 10.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   31,613 lbs / 14,339 Kg = 36.6 x 12.0 " / 305 mm shells or 3.6 torpedoes
 Stability (Unstable if below 1.00): 1.30
 Metacentric height 6.3 ft / 1.9 m
 Roll period: 14.3 seconds
 Steadiness - As gun platform (Average = 50 %): 56 %
   - Recoil effect (Restricted arc if above 1.00): 0.33
 Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.545
 Length to Beam Ratio: 9.06 : 1
 'Natural speed' for length: 27.75 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 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: 26.60 ft / 8.11 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 137.4 %
  - Above water (accommodation/working, high = better): 223.5 %
 Waterplane Area: 45,465 Square feet or 4,224 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 144 lbs/sq ft or 703 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.31
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent