An anchronistic Cressy class armoured cruiser

Another of the anachronistic ship designs from my 1988 page is a Cressy class armoured cruiser drawing. I used that drawing to help me specify armoured lengths. The ship has 2-9.2in guns in a twin turret forward, a twin 6in turret in the superfiring position, forward, two triple 6in turrets aft, with one superfiring. There are also two twin 6in turrets, one on each beam. The 3in QF armament is in 6 twin mounts on the first level above the main deck. The hull is flush-decked and there are two funnels, close together. The speed is 21.5 knots. The armour basis is 6in with a 3in deck. This is the Springsharp report:

Defence class (anachronistic), Great Britain Armoured Cruiser laid down 1912 (Engine 1904)

Displacement:
 11,746 t light; 12,187 t standard; 13,700 t normal; 14,910 t full load

Dimensions: Length overall / water x beam x draught
 470.84 ft / 470.00 ft x 70.00 ft x 25.00 ft (normal load)
 143.51 m / 143.26 m x 21.34 m  x 7.62 m

Armament:
      2 - 9.20" / 234 mm guns (1x2 guns), 389.34lbs / 176.60kg shells, 1912 Model
   Breech loading guns in a turret (on a barbette)
   on centreline forward
      2 - 6.00" / 152 mm guns (1x2 guns), 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in a turret (on a barbette)
   on centreline forward, all raised guns - superfiring
      6 - 6.00" / 152 mm guns (2x3 guns), 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in turrets (on barbettes)
   on centreline, all aft, 1 raised mount - superfiring
      4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships
      12 - 3.00" / 76.2 mm guns (6x2 guns), 13.50lbs / 6.12kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread, all raised mounts
 Weight of broadside 2,237 lbs / 1,015 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 305.00 ft / 92.96 m 16.00 ft / 4.88 m
 Ends: 2.00" / 51 mm 165.00 ft / 50.29 m 16.00 ft / 4.88 m
   Main Belt covers 100 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 305.00 ft / 92.96 m 25.00 ft / 7.62 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 3rd: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 4th: 2.00" / 51 mm 1.00" / 25 mm  2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Coal fired boilers, complex reciprocating steam engines, 
 Direct drive, 2 shafts, 24,939 ihp / 18,604 Kw = 21.50 kts
 Range 4,500nm at 14.00 kts
 Bunker at max displacement = 2,723 tons (100% coal)

Complement:
 633 - 823

Cost:
 £1.159 million / $4.638 million

Distribution of weights at normal displacement:
 Armament: 280 tons, 2.0 %
 Armour: 3,640 tons, 26.6 %
    - Belts: 1,469 tons, 10.7 %
    - Torpedo bulkhead: 282 tons, 2.1 %
    - Armament: 501 tons, 3.7 %
    - Armour Deck: 1,314 tons, 9.6 %
    - Conning Tower: 74 tons, 0.5 %
 Machinery: 3,667 tons, 26.8 %
 Hull, fittings & equipment: 4,159 tons, 30.4 %
 Fuel, ammunition & stores: 1,954 tons, 14.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   13,831 lbs / 6,274 Kg = 35.5 x 9.2 " / 234 mm shells or 2.1 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 4.2 ft / 1.3 m
 Roll period: 14.4 seconds
 Steadiness - As gun platform (Average = 50 %): 95 %
   - Recoil effect (Restricted arc if above 1.00): 0.43
 Seaboat quality  (Average = 1.00): 1.64

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.583
 Length to Beam Ratio: 6.71 : 1
 'Natural speed' for length: 21.68 kts
 Power going to wave formation at top speed: 50 %
 Trim (Max stability = 0, Max steadiness = 100): 58
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  24.00 ft / 7.32 m
    - Forecastle (20 %): 19.00 ft / 5.79 m
    - Mid (50 %):  19.00 ft / 5.79 m
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 19.40 ft / 5.91 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 143.9 %
  - Above water (accommodation/working, high = better): 135.4 %
 Waterplane Area: 23,682 Square feet or 2,200 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 115 lbs/sq ft or 561 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.94
  - 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
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather