The Nelson and Northampton

Continuing my series of anachronisms, I have the Nelson and Northampton, redesigned for 1910, but with a tower foremast, single funnel, flush deck and raked bow. The ships are now heavily armoured convoy cruisers with a long range. This is the Springsharp report:

Nelson class, Great Britain Belted cruiser laid down 1910

Displacement:
 5,740 t light; 5,970 t standard; 7,473 t normal; 8,675 t full load

Dimensions: Length overall / water x beam x draught
 298.00 ft / 295.00 ft x 60.00 ft x 24.80 ft (normal load)
 90.83 m / 89.92 m x 18.29 m  x 7.56 m

Armament:
      4 - 8.00" / 203 mm guns (2x2 guns), 256.00lbs / 116.12kg shells, 1910 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      10 - 5.00" / 127 mm guns (5x2 guns), 62.50lbs / 28.35kg shells, 1910 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships, 1 raised mount - superfiring
      12 - 1.57" / 40.0 mm guns (3x4 guns), 1.95lbs / 0.89kg shells, 1910 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 1 raised mount
 Weight of broadside 1,672 lbs / 759 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 10.0" / 254 mm 225.00 ft / 68.58 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 117 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 225.00 ft / 68.58 m 23.00 ft / 7.01 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 5.00" / 127 mm  10.0" / 254 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 3.00" / 76 mm, Conning tower: 10.00" / 254 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 13,160 shp / 9,817 Kw = 19.00 kts
 Range 7,600nm at 15.00 kts
 Bunker at max displacement = 2,705 tons

Complement:
 401 - 522

Cost:
 £0.453 million / $1.811 million

Distribution of weights at normal displacement:
 Armament: 209 tons, 2.8 %
 Armour: 2,978 tons, 39.9 %
    - Belts: 1,162 tons, 15.5 %
    - Torpedo bulkhead: 287 tons, 3.8 %
    - Armament: 731 tons, 9.8 %
    - Armour Deck: 716 tons, 9.6 %
    - Conning Tower: 82 tons, 1.1 %
 Machinery: 544 tons, 7.3 %
 Hull, fittings & equipment: 2,009 tons, 26.9 %
 Fuel, ammunition & stores: 1,733 tons, 23.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   14,627 lbs / 6,635 Kg = 57.1 x 8.0 " / 203 mm shells or 4.1 torpedoes
 Stability (Unstable if below 1.00): 1.06
 Metacentric height 2.6 ft / 0.8 m
 Roll period: 15.7 seconds
 Steadiness - As gun platform (Average = 50 %): 56 %
   - Recoil effect (Restricted arc if above 1.00): 0.38
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.596
 Length to Beam Ratio: 4.92 : 1
 'Natural speed' for length: 17.18 kts
 Power going to wave formation at top speed: 61 %
 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:  19.00 ft / 5.79 m
    - Forecastle (20 %): 15.00 ft / 4.57 m
    - Mid (50 %):  15.00 ft / 4.57 m
    - Quarterdeck (15 %): 15.00 ft / 4.57 m
    - Stern:  15.00 ft / 4.57 m
    - Average freeboard: 15.32 ft / 4.67 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 68.3 %
  - Above water (accommodation/working, high = better): 91.9 %
 Waterplane Area: 12,895 Square feet or 1,198 Square metres
 Displacement factor (Displacement / loading): 130 %
 Structure weight / hull surface area: 100 lbs/sq ft or 489 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.87
  - Longitudinal: 3.58
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is adequate