The Ger/BB/1915 design revisited

Besides drawing German destroyers and light cruisers, four years ago, I drew some of the early 1970 battleship designs, as well. The Ger/BB/1915 design has 9-18in and 16-5in QF guns. The latter are in casemates mounted on the upper deck superstructure. The look is rather like the Baden class ships. The hull, however, is flush decked with a straight prow. This is the Springsharp report:

Ger/BB/1915, Germany Battleship laid down 1915

Displacement:
 53,741 t light; 56,161 t standard; 60,000 t normal; 63,071 t full load

Dimensions: Length overall / water x beam x draught
 751.00 ft / 750.00 ft x 130.00 ft x 32.00 ft (normal load)
 228.90 m / 228.60 m x 39.62 m  x 9.75 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1915 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 27,244 lbs / 12,358 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 18.0" / 457 mm 490.00 ft / 149.35 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 18.0" / 457 mm 12.0" / 305 mm  18.0" / 457 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 7.00" / 178 mm, Conning tower: 18.00" / 457 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 138,361 shp / 103,217 Kw = 27.00 kts
 Range 6,200nm at 16.00 kts
 Bunker at max displacement = 6,910 tons

Complement:
 1,916 - 2,491

Cost:
 £7.964 million / $31.856 million

Distribution of weights at normal displacement:
 Armament: 3,406 tons, 5.7 %
 Armour: 22,470 tons, 37.4 %
    - Belts: 6,668 tons, 11.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 5,329 tons, 8.9 %
    - Armour Deck: 9,878 tons, 16.5 %
    - Conning Tower: 594 tons, 1.0 %
 Machinery: 5,241 tons, 8.7 %
 Hull, fittings & equipment: 22,625 tons, 37.7 %
 Fuel, ammunition & stores: 6,259 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   84,755 lbs / 38,444 Kg = 29.1 x 18.0 " / 457 mm shells or 6.1 torpedoes
 Stability (Unstable if below 1.00): 1.20
 Metacentric height 10.4 ft / 3.2 m
 Roll period: 17.0 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.42
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.673
 Length to Beam Ratio: 5.77 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 53 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 1.00 ft / 0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (50 %):  23.00 ft / 7.01 m
    - Quarterdeck (15 %): 23.00 ft / 7.01 m
    - Stern:  23.00 ft / 7.01 m
    - Average freeboard: 23.72 ft / 7.23 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 70.8 %
  - Above water (accommodation/working, high = better): 174.4 %
 Waterplane Area: 76,279 Square feet or 7,087 Square metres
 Displacement factor (Displacement / loading): 100 %
 Structure weight / hull surface area: 232 lbs/sq ft or 1,134 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.43
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent