The GB/CL/1918 design

My GB/CL/1918 design has 12-6in guns in twin mounts. Four mounts are on the centerline, with two superfiring twin mounts. The other two mounts are on the side, so that there is a ten gun broadside. There is now an 8-4in QF gun secondary battery that could be converted to AA guns. The torpedo armament is 12-21in TT in four triple mounts. The speed is 32 knots, which requires fairly lightweight machinery. This is the Springsharp report:

GB/CL/1918, Great Britain Light Cruiser laid down 1918 (Engine 1927)

Displacement:
 9,280 t light; 9,624 t standard; 10,678 t normal; 11,522 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (598.32 ft / 595.00 ft) x 58.00 ft x (19.00 / 20.20 ft)
 (182.37 m / 181.36 m) x 17.68 m  x (5.79 / 6.16 m)

Armament:
      12 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1918 Model
   4 x Twin mounts on centreline ends, evenly spread
  4 raised mounts - superfiring
   2 x Twin mounts on sides, forward deck aft
      8 - 4.00" / 102 mm 45.0 cal guns - 32.00lbs / 14.51kg shells, 0 per gun
   Quick firing guns in deck and hoist mounts, 1918 Model
   8 x Single mounts on sides, aft deck forward
  8 raised mounts
      Weight of broadside 1,628 lbs / 738 kg
      12 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.413 t each, 16.958 t total
 In 4 sets of deck mounted side rotating tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 3.00" / 76 mm 390.00 ft / 118.87 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 2.00" / 51 mm 340.00 ft / 103.63 m 8.00 ft / 2.44 m
   Main Belt covers 101 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  0.70" / 18 mm 390.00 ft / 118.87 m 19.00 ft / 5.79 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 1.00" / 25 mm  2.00" / 51 mm

   - Protected deck - single deck: 2.00" / 51 mm For and Aft decks
 Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 4.00" / 102 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 90,392 shp / 67,433 Kw = 32.00 kts
 Range 6,500nm at 16.00 kts
 Bunker at max displacement = 1,897 tons

Complement:
 524 - 682

Cost:
 £1.787 million / $7.146 million

Distribution of weights at normal displacement:
 Armament: 413 tons, 3.9 %
    - Guns: 396 tons, 3.7 %
    - Torpedoes: 17 tons, 0.2 %
 Armour: 1,980 tons, 18.5 %
    - Belts: 612 tons, 5.7 %
    - Torpedo bulkhead: 192 tons, 1.8 %
    - Armament: 220 tons, 2.1 %
    - Armour Deck: 914 tons, 8.6 %
    - Conning Tower: 42 tons, 0.4 %
 Machinery: 2,853 tons, 26.7 %
 Hull, fittings & equipment: 4,033 tons, 37.8 %
 Fuel, ammunition & stores: 1,399 tons, 13.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   13,915 lbs / 6,312 Kg = 128.8 x 6.0 " / 152 mm shells or 1.8 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 2.7 ft / 0.8 m
 Roll period: 14.7 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.65
 Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
 Hull has low quarterdeck ,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.570 / 0.578
 Length to Beam Ratio: 10.26 : 1
 'Natural speed' for length: 24.39 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 7.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  27.00 ft / 8.23 m,  24.00 ft / 7.32 m
    - Forward deck: 25.00 %,  24.00 ft / 7.32 m,  23.00 ft / 7.01 m
    - Aft deck: 21.00 %,  23.00 ft / 7.01 m,  23.00 ft / 7.01 m
    - Quarter deck: 29.00 %,  15.00 ft / 4.57 m,  16.00 ft / 4.88 m
    - Average freeboard:  21.50 ft / 6.55 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 154.7 %
  - Above water (accommodation/working, high = better): 203.5 %
 Waterplane Area: 24,540 Square feet or 2,280 Square metres
 Displacement factor (Displacement / loading): 115 %
 Structure weight / hull surface area: 103 lbs/sq ft or 503 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.48
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent