The GB/CL/1908 design

This is my design that is a larger cruiser for overseas operations. It has a mixed 6in and 4.7 in armament. The speed is the same 27 knots and the protection is a 2in deck with a 0.7in torpedo bulkhead. The layout is the same as my 1905 design. They both depend on lightweight machinery. This is the Springsharp report:

GB/CL/1908, Great Britain Light Cruiser laid down 1908 (Engine 1911)

Displacement:
 4,049 t light; 4,210 t standard; 5,242 t normal; 6,068 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (458.00 ft / 450.00 ft) x 45.00 ft x (17.00 / 19.08 ft)
 (139.60 m / 137.16 m) x 13.72 m  x (5.18 / 5.81 m)

Armament:
      2 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1908 Model
   2 x Single mounts on centreline ends, evenly spread
      8 - 4.70" / 119 mm 45.0 cal guns - 52.35lbs / 23.75kg shells, 150 per gun
   Quick firing guns in casemate mounts, 1908 Model
   8 x Single mounts on sides amidships
      Weight of broadside 637 lbs / 289 kg
      4 - 18.0" / 457 mm, 20.00 ft / 6.10 m torpedoes - 0.941 t each, 3.764 t total
 In 4 sets of deck mounted side rotating tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Ends: Unarmoured

   - Torpedo Bulkhead:
  0.70" / 18 mm 330.00 ft / 100.58 m 17.00 ft / 5.18 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: 3.00" / 76 mm 2.00" / 51 mm  3.00" / 76 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:
 Coal fired boilers, steam turbines, 
 Direct drive, 2 shafts, 32,371 shp / 24,149 Kw = 27.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,858 tons (100% coal)

Complement:
 307 - 400

Cost:
 £0.385 million / $1.538 million

Distribution of weights at normal displacement:
 Armament: 135 tons, 2.6 %
    - Guns: 131 tons, 2.5 %
    - Torpedoes: 4 tons, 0.1 %
 Armour: 808 tons, 15.4 %
    - Torpedo bulkhead: 145 tons, 2.8 %
    - Armament: 118 tons, 2.3 %
    - Armour Deck: 519 tons, 9.9 %
    - Conning Tower: 26 tons, 0.5 %
 Machinery: 1,445 tons, 27.6 %
 Hull, fittings & equipment: 1,660 tons, 31.7 %
 Fuel, ammunition & stores: 1,194 tons, 22.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   6,871 lbs / 3,116 Kg = 63.6 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.33
 Metacentric height 2.5 ft / 0.8 m
 Roll period: 12.0 seconds
 Steadiness - As gun platform (Average = 50 %): 73 %
   - Recoil effect (Restricted arc if above 1.00): 0.26
 Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
 Hull has rise forward of midbreak,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.533 / 0.550
 Length to Beam Ratio: 10.00 : 1
 'Natural speed' for length: 21.21 kts
 Power going to wave formation at top speed: 55 %
 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: 20.00 %,  23.00 ft / 7.01 m,  22.00 ft / 6.71 m
    - Forward deck: 17.00 %,  22.00 ft / 6.71 m,  22.00 ft / 6.71 m
    - Aft deck: 48.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
    - Quarter deck: 15.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
    - Average freeboard:  17.04 ft / 5.19 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 175.4 %
  - Above water (accommodation/working, high = better): 135.6 %
 Waterplane Area: 13,909 Square feet or 1,292 Square metres
 Displacement factor (Displacement / loading): 128 %
 Structure weight / hull surface area: 71 lbs/sq ft or 346 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.76
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily