British battleship design study

I have a pencil drawing, dimensions, standard displacement, and armor weights. I believe that it was for a British battleship design study for my friend Cliff. By the gun barrel lengths, I have estimated that the guns were to be 15in/42. The secondary armament is not show, but Cliff usually opted for 6in guns. The dimensions were 570 x 105ft x 25.7ft. The standard displacement was specified as 26,000 tons. The actual normal displacement for Springsharp needed to be much greater. This is the Springsharp report:

GB/BB/1912, Great Britain Battleship laid down 1912 (Engine 1921)

Displacement:
 25,955 t light; 27,186 t standard; 28,750 t normal; 30,001 t full load

Dimensions: Length overall / water x beam x draught
 570.00 ft / 570.00 ft x 105.00 ft x 25.70 ft (normal load)
 173.74 m / 173.74 m x 32.00 m  x 7.83 m

Armament:
      8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      10 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
 Weight of broadside 14,580 lbs / 6,613 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 340.00 ft / 103.63 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 340.00 ft / 103.63 m 8.00 ft / 2.44 m
   Main Belt covers 92 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 340.00 ft / 103.63 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 7.00" / 178 mm  13.0" / 330 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 43,271 shp / 32,280 Kw = 22.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 2,816 tons

Complement:
 1,103 - 1,435

Cost:
 £2.648 million / $10.592 million

Distribution of weights at normal displacement:
 Armament: 1,823 tons, 6.3 %
 Armour: 10,713 tons, 37.3 %
    - Belts: 2,618 tons, 9.1 %
    - Torpedo bulkhead: 604 tons, 2.1 %
    - Armament: 3,052 tons, 10.6 %
    - Armour Deck: 4,257 tons, 14.8 %
    - Conning Tower: 182 tons, 0.6 %
 Machinery: 1,490 tons, 5.2 %
 Hull, fittings & equipment: 11,929 tons, 41.5 %
 Fuel, ammunition & stores: 2,795 tons, 9.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   47,313 lbs / 21,461 Kg = 28.0 x 15.0 " / 381 mm shells or 8.3 torpedoes
 Stability (Unstable if below 1.00): 1.09
 Metacentric height 6.4 ft / 1.9 m
 Roll period: 17.5 seconds
 Steadiness - As gun platform (Average = 50 %): 68 %
   - Recoil effect (Restricted arc if above 1.00): 0.69
 Seaboat quality  (Average = 1.00): 1.37

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.654
 Length to Beam Ratio: 5.43 : 1
 'Natural speed' for length: 23.87 kts
 Power going to wave formation at top speed: 49 %
 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:  28.00 ft / 8.53 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (64 %):  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: 22.36 ft / 6.82 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 79.4 %
  - Above water (accommodation/working, high = better): 178.2 %
 Waterplane Area: 46,025 Square feet or 4,276 Square metres
 Displacement factor (Displacement / loading): 102 %
 Structure weight / hull surface area: 197 lbs/sq ft or 962 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.86
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily