A 37 knot British light cruiser

I thought that the next step would be to create a British light cruiser that was like the Japanese Mogami class ships. Obviously, such a ship must be larger than 10,000 tons standard. The amazing thing is the displacement is not that extreme, due to the use of very lightweight machinery. This is the Springsharp report for the GB/CL/1932:

GB/CL/1932, Great Britain Light Cruiser laid down 1932 (Engine 1950)

Displacement:
 12,524 t light; 12,989 t standard; 14,045 t normal; 14,889 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (669.64 ft / 665.00 ft) x 64.00 ft x (21.00 / 21.96 ft)
 (204.11 m / 202.69 m) x 19.51 m  x (6.40 / 6.69 m)

Armament:
      15 - 6.00" / 152 mm 50.0 cal guns - 100.00lbs / 45.36kg shells, 150 per gun
   Quick firing guns in turret on barbette mounts, 1932 Model
   5 x Triple mounts on centreline forward
  2 raised mounts - superfiring
      12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
   Anti-air guns in deck and hoist mounts, 1932 Model
   6 x Twin mounts on sides, forward deck aft
      24 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 150 per gun
   Anti-air guns in deck mounts, 1932 Model
   4 x 2 row sextuple mounts on sides, aft deck forward
  4 raised mounts
      Weight of broadside 1,935 lbs / 877 kg
      16 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.469 t each, 23.507 t total
 In 4 sets of deck mounted side rotating tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 3.00" / 76 mm 460.00 ft / 140.21 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 106 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  0.80" / 20 mm 460.00 ft / 140.21 m 21.00 ft / 6.40 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 3.00" / 76 mm 3.00" / 76 mm  3.00" / 76 mm

   - Armoured deck - multiple decks: 2.00" / 51 mm For and Aft decks
 Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 158,334 shp / 118,117 Kw = 37.00 kts
 Range 5,600nm at 17.00 kts
 Bunker at max displacement = 1,900 tons

Complement:
 644 - 838

Cost:
 £5.405 million / $21.620 million

Distribution of weights at normal displacement:
 Armament: 556 tons, 4.0 %
    - Guns: 532 tons, 3.8 %
    - Torpedoes: 24 tons, 0.2 %
 Armour: 2,731 tons, 19.4 %
    - Belts: 898 tons, 6.4 %
    - Torpedo bulkhead: 286 tons, 2.0 %
    - Armament: 394 tons, 2.8 %
    - Armour Deck: 1,152 tons, 8.2 %
 Machinery: 3,788 tons, 27.0 %
 Hull, fittings & equipment: 5,449 tons, 38.8 %
 Fuel, ammunition & stores: 1,521 tons, 10.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,609 lbs / 7,987 Kg = 163.0 x 6.0 " / 152 mm shells or 2.2 torpedoes
 Stability (Unstable if below 1.00): 1.11
 Metacentric height 3.1 ft / 1.0 m
 Roll period: 15.2 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.46
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak,
   a normal bow and large transom stern
 Block coefficient (normal/deep): 0.550 / 0.558
 Length to Beam Ratio: 10.39 : 1
 'Natural speed' for length: 29.19 kts
 Power going to wave formation at top speed: 62 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 8.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 32.00 %,  33.00 ft / 10.06 m,  27.00 ft / 8.23 m
    - Forward deck: 30.00 %,  27.00 ft / 8.23 m,  27.00 ft / 8.23 m
    - Aft deck: 23.00 %,  19.00 ft / 5.79 m,  19.00 ft / 5.79 m
    - Quarter deck: 15.00 %,  19.00 ft / 5.79 m,  19.00 ft / 5.79 m
    - Average freeboard:  24.73 ft / 7.54 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 148.6 %
  - Above water (accommodation/working, high = better): 211.5 %
 Waterplane Area: 30,923 Square feet or 2,873 Square metres
 Displacement factor (Displacement / loading): 113 %
 Structure weight / hull surface area: 110 lbs/sq ft or 538 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.65
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent