I found that I had a detailed armour specification for the GB/BB/1901, so I did a revision

I just did a revised Springsharp report for the GB/BB/1901 design study. I found that I had a detailed specification for the armour that would be carried, so I did a new design. This is the revised report. In some ways, I not sure why it turned out so well. Partly, my original design was well-researched, based on real designs:

GB/BB/1901 revised, Great Britain Battleship laid down 1901

Displacement:
 12,130 t light; 12,679 t standard; 15,000 t normal; 16,857 t full load

Dimensions: Length overall / water x beam x draught
 435.00 ft / 435.00 ft x 75.00 ft x 29.90 ft (normal load)
 132.59 m / 132.59 m x 22.86 m  x 9.11 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1901 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1901 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
   4 guns in hull casemates - Limited use in heavy seas
 Weight of broadside 4,752 lbs / 2,155 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 250.00 ft / 76.20 m 9.00 ft / 2.74 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 250.00 ft / 76.20 m 8.00 ft / 2.44 m
   Main Belt covers 88 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 250.00 ft / 76.20 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 12.0" / 305 mm 7.00" / 178 mm  9.00" / 229 mm
 2nd: 7.00" / 178 mm 7.00" / 178 mm  7.00" / 178 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Coal fired boilers, complex reciprocating steam engines, 
 Direct drive, 2 shafts, 13,590 ihp / 10,138 Kw = 18.00 kts
 Range 9,200nm at 12.00 kts
 Bunker at max displacement = 4,178 tons (100% coal)

Complement:
 677 - 881

Cost:
 £1.216 million / $4.865 million

Distribution of weights at normal displacement:
 Armament: 594 tons, 4.0 %
 Armour: 4,710 tons, 31.4 %
    - Belts: 1,954 tons, 13.0 %
    - Torpedo bulkhead: 250 tons, 1.7 %
    - Armament: 1,139 tons, 7.6 %
    - Armour Deck: 1,250 tons, 8.3 %
    - Conning Tower: 118 tons, 0.8 %
 Machinery: 2,091 tons, 13.9 %
 Hull, fittings & equipment: 4,735 tons, 31.6 %
 Fuel, ammunition & stores: 2,870 tons, 19.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   20,611 lbs / 9,349 Kg = 23.9 x 12.0 " / 305 mm shells or 3.3 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 4.1 ft / 1.3 m
 Roll period: 15.5 seconds
 Steadiness - As gun platform (Average = 50 %): 100 %
   - Recoil effect (Restricted arc if above 1.00): 0.71
 Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.538
 Length to Beam Ratio: 5.80 : 1
 'Natural speed' for length: 20.86 kts
 Power going to wave formation at top speed: 43 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  24.00 ft / 7.32 m
    - Forecastle (20 %): 22.00 ft / 6.71 m
    - Mid (50 %):  22.00 ft / 6.71 m
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 22.16 ft / 6.75 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 102.7 %
  - Above water (accommodation/working, high = better): 139.4 %
 Waterplane Area: 22,518 Square feet or 2,092 Square metres
 Displacement factor (Displacement / loading): 110 %
 Structure weight / hull surface area: 130 lbs/sq ft or 636 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.88
  - Longitudinal: 3.30
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 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