A 1912 British Battleship-Cruiser

I thought that I might try a 1912 British Battleship-Cruiser next. In many ways, it is not very capable, considering the displacement. I suspect that the reasons are:

• 17ft high 13in belt
• Direct-drive turbines

I wanted a 4in deck, and perhaps that is more than is historically accurate, but I thought that deck armour of that thickness would make for a better-protected ship (obviously). I also mounted the 6in guns high on the ship. The greater portion are at the level above the forecastle, with 4 in the superstructure. These are somewhat like large, fast, Queen Elizabeths with the secondary armament mounted higher. They really are different, due to my insistence on a greater 13in armoured height. This is the Springsharp report:

GB/BB/1912 Battleship-cruiser, Great Britain Battleship-Cruiser laid down 1912

Displacement:
 36,468 t light; 38,142 t standard; 41,200 t normal; 43,647 t full load

Dimensions: Length overall / water x beam x draught
 745.00 ft / 745.00 ft x 102.00 ft x 29.00 ft (normal load)
 227.08 m / 227.08 m x 31.09 m  x 8.84 m

Armament:
     8 - 15.00" / 381 mm guns (4x2 guns), 1,920.00lbs / 870.90kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on side ends, evenly spread, 2 raised mounts - superfiring
     14 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1912 Model
   Quick firing guns in casemate mounts
   on side, all amidships, 4 raised mounts - superfiring
 Weight of broadside 16,760 lbs / 7,602 kg
 Shells per gun, main battery: 90

Armour:
  - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 490.00 ft / 149.35 m 17.00 ft / 5.18 m
 Ends: 5.00" / 127 mm 255.00 ft / 77.72 m 17.00 ft / 5.18 m
   Main Belt covers 101 % of normal length

  - Torpedo Bulkhead:
  2.00" / 51 mm 490.00 ft / 149.35 m 27.00 ft / 8.23 m

  - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 9.00" / 229 mm  13.0" / 330 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

  - Armour deck: 4.00" / 102 mm, Conning tower: 13.00" / 330 mm

Machinery:
 Oil fired boilers, steam turbines,
 Direct drive, 4 shafts, 105,189 shp / 78,471 Kw = 27.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 5,505 tons

Complement:
 1,445 - 1,879

Cost:
 £3.440 million / $13.759 million

Distribution of weights at normal displacement:
 Armament: 1,877 tons, 4.6 %
 Armour: 14,655 tons, 35.6 %
    - Belts: 5,475 tons, 13.3 %
    - Torpedo bulkhead: 979 tons, 2.4 %
    - Armament: 3,542 tons, 8.6 %
    - Armour Deck: 4,325 tons, 10.5 %
    - Conning Tower: 334 tons, 0.8 %
 Machinery: 4,194 tons, 10.2 %
 Hull, fittings & equipment: 15,742 tons, 38.2 %
 Fuel, ammunition & stores: 4,732 tons, 11.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   64,290 lbs / 29,162 Kg = 38.1 x 15.0 " / 381 mm shells or 9.6 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 6.5 ft / 2.0 m
 Roll period: 16.8 seconds
 Steadiness - As gun platform (Average = 50 %): 63 %
   - Recoil effect (Restricted arc if above 1.00): 0.75
 Seaboat quality  (Average = 1.00): 1.26

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.654
 Length to Beam Ratio: 7.30 : 1
 'Natural speed' for length: 27.29 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:  31.00 ft / 9.45 m
    - Forecastle (20 %): 27.00 ft / 8.23 m
    - Mid (67 %):  27.00 ft / 8.23 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 24.35 ft / 7.42 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 84.4 %
  - Above water (accommodation/working, high = better): 188.8 %
 Waterplane Area: 58,445 Square feet or 5,430 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 195 lbs/sq ft or 950 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.26
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily