My quick and dirty GB/CA/1916 design

The main problem with my GB/CA/1916 design has to do with the armament layout. Can 9-8in guns fit on the centerline, even with superfiring guns? Also, Springsharp is behaving strangely with respect to the belt length. I was not able to satisfy the magazine and machinery coverage, despite a long belt and having increased the height to 14ft. The speed is now 30 knots with a range of 6,200nm at 15 knots. I have retained the 4.7in gun secondary armament, and increased the torpedo armament to 8 tubes. The design should be superior to the Raleighs and the Kakos, except for the latter's high speed. This is the Springsharp report:

GB/CA/1916, Great Britain Cruiser laid down 1916

Displacement:
 10,369 t light; 10,854 t standard; 12,000 t normal; 12,917 t full load

Dimensions: Length overall / water x beam x draught
 596.42 ft / 595.00 ft x 60.00 ft x 22.00 ft (normal load)
 181.79 m / 181.36 m x 18.29 m  x 6.71 m

Armament:
      9 - 8.00" / 203 mm guns in single mounts, 256.00lbs / 116.12kg shells, 1916 Model
   Breech loading guns in deck mounts with hoists
   on centreline ends, majority forward, 3 raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1916 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1916 Model
   Breech loading guns in deck mounts 
   on side, evenly spread
 Weight of broadside 2,815 lbs / 1,277 kg
 Shells per gun, main battery: 150
 8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 14.00 ft / 4.27 m
 Ends: Unarmoured
   Main Belt covers 142 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 550.00 ft / 167.64 m 20.00 ft / 6.10 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 73,876 shp / 55,111 Kw = 30.00 kts
 Range 6,200nm at 15.00 kts
 Bunker at max displacement = 2,064 tons

Complement:
 573 - 745

Cost:
 £1.708 million / $6.832 million

Distribution of weights at normal displacement:
 Armament: 352 tons, 2.9 %
 Armour: 2,863 tons, 23.9 %
    - Belts: 1,216 tons, 10.1 %
    - Torpedo bulkhead: 407 tons, 3.4 %
    - Armament: 286 tons, 2.4 %
    - Armour Deck: 909 tons, 7.6 %
    - Conning Tower: 45 tons, 0.4 %
 Machinery: 2,752 tons, 22.9 %
 Hull, fittings & equipment: 4,401 tons, 36.7 %
 Fuel, ammunition & stores: 1,631 tons, 13.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   14,896 lbs / 6,757 Kg = 58.2 x 8.0 " / 203 mm shells or 2.1 torpedoes
 Stability (Unstable if below 1.00): 1.19
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 14.0 seconds
 Steadiness - As gun platform (Average = 50 %): 62 %
   - Recoil effect (Restricted arc if above 1.00): 0.73
 Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.535
 Length to Beam Ratio: 9.92 : 1
 'Natural speed' for length: 24.39 kts
 Power going to wave formation at top speed: 54 %
 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:  27.00 ft / 8.23 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (67 %):  23.00 ft / 7.01 m (15.00 ft / 4.57 m aft of break)
    - Quarterdeck (15 %): 15.00 ft / 4.57 m
    - Stern:  15.00 ft / 4.57 m
    - Average freeboard: 20.68 ft / 6.30 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 146.2 %
  - Above water (accommodation/working, high = better): 143.5 %
 Waterplane Area: 24,562 Square feet or 2,282 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 108 lbs/sq ft or 527 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.41
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily