The very small Super Lion

I redid the Springsharp calculations and got within the displacement that I had originally wanted, as well as close to the protection weight. The ship is very lightly protected. Here is the Springsharp report:

Super Lion, Great Britain Battlecruiser laid down 1912

Displacement:
 29,593 t light; 31,049 t standard; 33,710 t normal; 35,839 t full load

Dimensions: Length overall / water x beam x draught
 752.00 ft / 750.00 ft x 100.00 ft x 28.90 ft (normal load)
 229.21 m / 228.60 m x 30.48 m  x 8.81 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
      2 - 15.00" / 381 mm guns (1x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
   Breech loading guns in a turret (on a barbette)
   on centreline amidships
      12 - 4.00" / 102 mm guns (6x2 guns), 32.00lbs / 14.51kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on side, all forward, 2 raised mounts - superfiring
 Weight of broadside 17,259 lbs / 7,829 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 5.00" / 127 mm 450.00 ft / 137.16 m 8.00 ft / 2.44 m
 Ends: 4.00" / 102 mm 200.00 ft / 60.96 m 8.00 ft / 2.44 m
   100.00 ft / 30.48 m Unarmoured ends
 Upper: 4.00" / 102 mm 550.00 ft / 167.64 m 8.00 ft / 2.44 m
   Main Belt covers 92 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.40" / 36 mm 550.00 ft / 167.64 m 26.00 ft / 7.92 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: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 133,620 shp / 99,680 Kw = 30.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 4,790 tons

Complement:
 1,243 - 1,617

Cost:
 £3.594 million / $14.375 million

Distribution of weights at normal displacement:
 Armament: 2,157 tons, 6.4 %
 Armour: 6,237 tons, 18.5 %
    - Belts: 1,760 tons, 5.2 %
    - Torpedo bulkhead: 741 tons, 2.2 %
    - Armament: 1,675 tons, 5.0 %
    - Armour Deck: 1,926 tons, 5.7 %
    - Conning Tower: 135 tons, 0.4 %
 Machinery: 5,328 tons, 15.8 %
 Hull, fittings & equipment: 15,871 tons, 47.1 %
 Fuel, ammunition & stores: 4,117 tons, 12.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   38,782 lbs / 17,591 Kg = 23.0 x 15.0 " / 381 mm shells or 4.8 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 6.3 ft / 1.9 m
 Roll period: 16.7 seconds
 Steadiness - As gun platform (Average = 50 %): 60 %
   - Recoil effect (Restricted arc if above 1.00): 0.92
 Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.544
 Length to Beam Ratio: 7.50 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 52 %
 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:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (67 %):  28.00 ft / 8.53 m (20.00 ft / 6.10 m aft of break)
    - Quarterdeck (15 %): 20.00 ft / 6.10 m
    - Stern:  20.00 ft / 6.10 m
    - Average freeboard: 25.60 ft / 7.80 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 123.3 %
  - Above water (accommodation/working, high = better): 205.7 %
 Waterplane Area: 52,065 Square feet or 4,837 Square metres
 Displacement factor (Displacement / loading): 99 %
 Structure weight / hull surface area: 211 lbs/sq ft or 1,032 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.54
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent