The GB/CL/1935 light cruiser design

The GB/CL/1935 design is almost a Mogami-type ship, except that this design has a larger displacement and a deeper draft. The draft is abnormal, as this is a convenient way, in Springsharp, to increase strength. I am sorry to say that I will resort to such measures. The main difference with this design is the 36-knot speed and the 8,500nm range at 15 knots. The armour basis is still 4in with a 2in deck. The armament stayed the same with 12-6in QF, 8-4in AA, 28-2pdr AA, and 16-21in TT. This is the Springsharp report:

GB/CL/1935, Great Britain Light Cruiser laid down 1935

Displacement:
 12,475 t light; 12,901 t standard; 14,200 t normal; 15,239 t full load

Dimensions: Length overall / water x beam x draught
 646.42 ft / 645.00 ft x 62.00 ft x 25.00 ft (normal load)
 197.03 m / 196.60 m x 18.90 m  x 7.62 m

Armament:
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1935 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 1 raised mount - superfiring
      8 - 4.00" / 102 mm guns (4x2 guns), 32.00lbs / 14.51kg shells, 1935 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1935 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft, 3 raised mounts - superfiring
 Weight of broadside 1,607 lbs / 729 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 131 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 162,325 shp / 121,094 Kw = 36.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 2,338 tons

Complement:
 649 - 845

Cost:
 £6.368 million / $25.474 million

Distribution of weights at normal displacement:
 Armament: 201 tons, 1.4 %
 Armour: 2,471 tons, 17.4 %
    - Belts: 1,053 tons, 7.4 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 384 tons, 2.7 %
    - Armour Deck: 983 tons, 6.9 %
    - Conning Tower: 51 tons, 0.4 %
 Machinery: 4,612 tons, 32.5 %
 Hull, fittings & equipment: 5,192 tons, 36.6 %
 Fuel, ammunition & stores: 1,725 tons, 12.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   12,772 lbs / 5,793 Kg = 118.3 x 6.0 " / 152 mm shells or 1.4 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 14.0 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.497
 Length to Beam Ratio: 10.40 : 1
 'Natural speed' for length: 25.40 kts
 Power going to wave formation at top speed: 60 %
 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 (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (67 %):  25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
    - Quarterdeck (15 %): 17.00 ft / 5.18 m
    - Stern:  17.00 ft / 5.18 m
    - Average freeboard: 22.52 ft / 6.86 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 116.5 %
  - Above water (accommodation/working, high = better): 128.7 %
 Waterplane Area: 26,575 Square feet or 2,469 Square metres
 Displacement factor (Displacement / loading): 107 %
 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