A radical GB/CB/1915 design

This design for a GB/CB/1915 battlecruiser seems inspired by the Super Lion concept. The ship has 10-15in/45 guns (as originally specified, not the real 15in/42 guns) and 16-5in/50 QF guns in shields, mounted on the deck. The armour is light, the machinery is a light as is possible. The speed is 32 knots. The original specification had a beam of 90ft, but a viable design is not possible in Springsharp with such a narrow beam. This is the Springsharp report:

GB/CB/1915, Great Britain Battlecruiser laid down 1915 (Engine 1950)

Displacement:
 33,175 t light; 34,959 t standard; 36,852 t normal; 38,366 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (807.00 ft / 800.00 ft) x 104.00 ft x (26.50 / 27.38 ft)
 (245.97 m / 243.84 m) x 31.70 m  x (8.08 / 8.35 m)

Armament:
      10 - 15.00" / 381 mm 45.0 cal guns - 1,920.00lbs / 870.90kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts, 1915 Model
   4 x Twin mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
   1 x Twin mount on centreline, aft deck forward
      16 - 5.00" / 127 mm 50.0 cal guns - 65.00lbs / 29.48kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1915 Model
   16 x Single mounts on sides, evenly spread
  4 raised mounts
      Weight of broadside 20,240 lbs / 9,181 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 5.00" / 127 mm 575.00 ft / 175.26 m 17.00 ft / 5.18 m
 Ends: 3.00" / 76 mm 200.00 ft / 60.96 m 12.00 ft / 3.66 m
   25.00 ft / 7.62 m Unarmoured ends
   Main Belt covers 111 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 575.00 ft / 175.26 m 26.50 ft / 8.08 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 7.00" / 178 mm 5.00" / 127 mm  7.00" / 178 mm
 2nd: 4.00" / 102 mm 2.00" / 51 mm  4.00" / 102 mm

   - Armoured deck - multiple decks: 3.00" / 76 mm For and Aft decks
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 7.00" / 178 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 182,116 shp / 135,859 Kw = 32.00 kts
 Range 6,500nm at 16.00 kts
 Bunker at max displacement = 3,407 tons

Complement:
 1,329 - 1,728

Cost:
 £5.047 million / $20.188 million

Distribution of weights at normal displacement:
 Armament: 3,141 tons, 8.5 %
 Armour: 9,321 tons, 25.3 %
    - Belts: 2,304 tons, 6.3 %
    - Torpedo bulkhead: 1,128 tons, 3.1 %
    - Armament: 2,368 tons, 6.4 %
    - Armour Deck: 3,355 tons, 9.1 %
    - Conning Tower: 167 tons, 0.5 %
 Machinery: 4,357 tons, 11.8 %
 Hull, fittings & equipment: 16,355 tons, 44.4 %
 Fuel, ammunition & stores: 3,677 tons, 10.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   54,224 lbs / 24,596 Kg = 32.1 x 15.0 " / 381 mm shells or 7.7 torpedoes
 Stability (Unstable if below 1.00): 1.17
 Metacentric height 7.1 ft / 2.2 m
 Roll period: 16.4 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.87
 Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
 Hull has rise forward of midbreak,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.585 / 0.589
 Length to Beam Ratio: 7.69 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 30.00 %,  32.00 ft / 9.75 m,  29.00 ft / 8.84 m
    - Forward deck: 37.00 %,  29.00 ft / 8.84 m,  28.00 ft / 8.53 m
    - Aft deck: 18.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
    - Quarter deck: 15.00 %,  20.00 ft / 6.10 m,  21.00 ft / 6.40 m
    - Average freeboard:  26.28 ft / 8.01 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 99.3 %
  - Above water (accommodation/working, high = better): 221.2 %
 Waterplane Area: 60,003 Square feet or 5,574 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 210 lbs/sq ft or 1,023 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.32
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent