A well-protected battlecruiser: GB/CB/1905

I still do not see any reason why there could not be a well-protected British battlecruiser laid down in 1905. The ship has coal-fired boilers and direct-drive turbines. The belt is 10in and the deck in 3in. The four turrets are distributed on the centerline, with one forward and one aft. The 16-4in QF guns are stacked casemates with 4in protection. The speed is 25 knots. This is the Springsharp report:

GB/CB/1905, Great Britain Battlecruiser laid down 1905 (Engine 1909)

Displacement:
 20,474 t light; 21,583 t standard; 24,985 t normal; 27,707 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (642.00 ft / 634.00 ft) x 82.00 ft x (27.00 / 29.45 ft)
 (195.68 m / 193.24 m) x 24.99 m  x (8.23 / 8.98 m)

Armament:
      8 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts, 1905 Model
   4 x Twin mounts on centreline, evenly spread
      16 - 4.00" / 102 mm 45.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
   Breech loading guns in casemate mounts, 1905 Model
   16 x Single mounts on sides, evenly spread
  8 raised mounts
      Weight of broadside 7,312 lbs / 3,317 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 10.0" / 254 mm 420.00 ft / 128.02 m 9.00 ft / 2.74 m
 Ends: 4.00" / 102 mm 114.00 ft / 34.75 m 12.00 ft / 3.66 m
   100.00 ft / 30.48 m Unarmoured ends
 Upper: 7.00" / 178 mm 420.00 ft / 128.02 m 8.00 ft / 2.44 m
   Main Belt covers 102 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
  2.00" / 51 mm 420.00 ft / 128.02 m 27.00 ft / 8.23 m
 Beam between torpedo bulkheads 62.00 ft / 18.90 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 8.00" / 203 mm  10.0" / 254 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armoured deck - multiple decks:
 For and Aft decks: 3.00" / 76 mm
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 10.00" / 254 mm, Aft 7.00" / 178 mm

Machinery:
 Coal fired boilers, steam turbines, 
 Direct drive, 4 shafts, 58,942 shp / 43,971 Kw = 25.00 kts
 Range 5,400nm at 16.00 kts
 Bunker at max displacement = 6,124 tons (100% coal)

Complement:
 993 - 1,291

Cost:
 £1.805 million / $7.219 million

Distribution of weights at normal displacement:
 Armament: 1,320 tons, 5.3 %
    - Guns: 1,320 tons, 5.3 %
 Armour: 8,087 tons, 32.4 %
    - Belts: 2,801 tons, 11.2 %
    - Torpedo bulkhead: 839 tons, 3.4 %
    - Armament: 1,964 tons, 7.9 %
    - Armour Deck: 2,170 tons, 8.7 %
    - Conning Towers: 313 tons, 1.3 %
 Machinery: 2,947 tons, 11.8 %
 Hull, fittings & equipment: 8,119 tons, 32.5 %
 Fuel, ammunition & stores: 4,511 tons, 18.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   45,024 lbs / 20,422 Kg = 52.1 x 12.0 " / 305 mm shells or 6.8 torpedoes
 Stability (Unstable if below 1.00): 1.16
 Metacentric height 4.9 ft / 1.5 m
 Roll period: 15.5 seconds
 Steadiness - As gun platform (Average = 50 %): 80 %
   - Recoil effect (Restricted arc if above 1.00): 0.77
 Seaboat quality  (Average = 1.00): 1.60

Hull form characteristics:
 Hull has low quarterdeck ,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.623 / 0.633
 Length to Beam Ratio: 7.73 : 1
 'Natural speed' for length: 25.18 kts
 Power going to wave formation at top speed: 49 %
 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: 25.00 %,  27.00 ft / 8.23 m,  26.00 ft / 7.92 m
    - Forward deck: 30.00 %,  26.00 ft / 7.92 m,  26.00 ft / 7.92 m
    - Aft deck: 17.00 %,  26.00 ft / 7.92 m,  26.00 ft / 7.92 m
    - Quarter deck: 28.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
    - Average freeboard:  23.86 ft / 7.27 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 85.0 %
  - Above water (accommodation/working, high = better): 193.7 %
 Waterplane Area: 38,846 Square feet or 3,609 Square metres
 Displacement factor (Displacement / loading): 122 %
 Structure weight / hull surface area: 148 lbs/sq ft or 723 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.57
  - Overall: 1.00
 Adequate machinery, storage, compartmentation space
 Excellent accommodation and workspace room
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather