A new version of the GB/CA/1912 design

I wanted to try my GB/CA/1912 design in Springsharp 3.0b1 Beta. The only odd thing is that Springsharp forced me to use geared turbines to get rid of an error message. This is the original photo:

This is a 29 knot ship with oil-fired boilers and 12-9.2in guns. The armour basis is 6in with a 2in deck. I did not have to do much to make the design "work". I just had to increase the displacement to achieve adequate strength. This is the Springsharp report:

GB/CA/1912, Great Britain Armoured Cruiser laid down 1912

Displacement:
 16,705 t light; 17,586 t standard; 19,221 t normal; 20,530 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (657.00 ft / 650.00 ft) x 75.00 ft x (24.00 / 25.32 ft)
 (200.25 m / 198.12 m) x 22.86 m  x (7.32 / 7.72 m)

Armament:
      12 - 9.20" / 234 mm 50.0 cal guns - 380.00lbs / 172.37kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts , 1912 Model
   4 x Twin mounts on centreline ends, evenly spread
  3 raised mounts - superfiring
   2 x Twin mounts on centreline, aft deck forward
  1 raised mount - superfiring
      14 - 6.00" / 152 mm 50.0 cal guns - 100.00lbs / 45.36kg shells, 150 per gun
   Breech loading guns in casemate mounts , 1912 Model
   10 x Single mounts on sides, forward deck aft
  10 hull mounts in casemates- Limited use in heavy seas
   4 x Single mounts on sides, aft deck forward
  4 hull mounts in casemates- Limited use in heavy seas
 Weight of broadside 5,960 lbs / 5,960 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 360.00 ft / 109.73 m 16.00 ft / 4.88 m
 Ends: 3.00" / 76 mm 190.00 ft / 57.91 m 16.00 ft / 4.88 m
   100.00 ft / 30.48 m Unarmoured ends
   Main Belt covers 85 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 360.00 ft / 109.73 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 5.00" / 127 mm 3.00" / 76 mm  5.00" / 127 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 86,504 shp / 64,532 Kw = 29.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 2,944 tons

Complement:
 816 - 1,061

Cost:
 £1.666 million / $6.664 million

Distribution of weights at normal displacement:
 Armament: 1,490 tons, 7.7 %
 Armour: 5,099 tons, 26.5 %
    - Belts: 1,843 tons, 9.6 %
    - Torpedo bulkhead: 480 tons, 2.5 %
    - Armament: 1,396 tons, 7.3 %
    - Armour Deck: 1,289 tons, 6.7 %
    - Conning Tower: 93 tons, 0.5 %
 Machinery: 3,449 tons, 17.9 %
 Hull, fittings & equipment: 7,444 tons, 38.7 %
 Fuel, ammunition & stores: 2,517 tons, 13.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   24,837 lbs / 11,266 Kg = 63.8 x 9.2 " / 234 mm shells or 3.4 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 3.9 ft / 1.2 m
 Roll period: 16.0 seconds
 Steadiness - As gun platform (Average = 50 %): 58 %
   - Recoil effect (Restricted arc if above 1.00): 0.77
 Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
 Hull has rise forward of midbreak,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.575 / 0.582
 Length to Beam Ratio: 8.67 : 1
 'Natural speed' for length: 25.50 kts
 Power going to wave formation at top speed: 53 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -3.00 degrees
 Stern overhang: -3.00 ft / -0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  27.00 ft / 8.23 m,  26.00 ft / 7.92 m
    - Forward deck: 35.00 %,  26.00 ft / 7.92 m,  26.00 ft / 7.92 m
    - Aft deck: 30.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
    - Quarter deck: 15.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
    - Average freeboard:  22.48 ft / 6.85 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 119.1 %
  - Above water (accommodation/working, high = better): 181.4 %
 Waterplane Area: 34,830 Square feet or 3,236 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 141 lbs/sq ft or 686 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.24
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent