My anchronistic HMS Inflexible

My HMS Inflexible came out as a flush-decked coast defense battleship, brought up to later standards, with a raked bow, flush-deck, tower mast, and more modern guns and turrets, as well as machinery. I used an armament of 4-13.5in BLR, 6-5.25in QF, 16-40mm AA, and 6-20mm AA guns. The armor basis is 14in. The maximum speed is just 18 knots with a 12 knot cruising speed. For a coast defense battleship, the range is long, so perhaps is it is a suitable convoy escort ship. This is another of my fun designs, with archaic dimensions with a modern look. This is the Springsharp report:

HMS Inflexible, Great Britain Battleship laid down 1910

Displacement:
 10,283 t light; 10,750 t standard; 11,880 t normal; 12,784 t full load

Dimensions: Length overall / water x beam x draught
 346.94 ft / 344.00 ft x 75.00 ft x 25.50 ft (normal load)
 105.75 m / 104.85 m x 22.86 m  x 7.77 m

Armament:
      4 - 13.50" / 343 mm guns (2x2 guns), 1,230.19lbs / 558.00kg shells, 1910 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      6 - 5.25" / 133 mm guns (3x2 guns), 72.35lbs / 32.82kg shells, 1910 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships, all raised mounts - superfiring
      16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1910 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 3 raised mounts
      6 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1910 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 5,388 lbs / 2,444 kg
 Shells per gun, main battery: 75

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 225.00 ft / 68.58 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 225.00 ft / 68.58 m 25.00 ft / 7.62 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 7.00" / 178 mm  14.0" / 356 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 13,537 shp / 10,099 Kw = 18.00 kts
 Range 7,800nm at 12.00 kts
 Bunker at max displacement = 2,034 tons

Complement:
 568 - 739

Cost:
 £1.004 million / $4.016 million

Distribution of weights at normal displacement:
 Armament: 673 tons, 5.7 %
 Armour: 5,249 tons, 44.2 %
    - Belts: 1,722 tons, 14.5 %
    - Torpedo bulkhead: 416 tons, 3.5 %
    - Armament: 1,156 tons, 9.7 %
    - Armour Deck: 1,798 tons, 15.1 %
    - Conning Tower: 157 tons, 1.3 %
 Machinery: 559 tons, 4.7 %
 Hull, fittings & equipment: 3,801 tons, 32.0 %
 Fuel, ammunition & stores: 1,597 tons, 13.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,082 lbs / 7,748 Kg = 13.9 x 13.5 " / 343 mm shells or 4.2 torpedoes
 Stability (Unstable if below 1.00): 1.07
 Metacentric height 3.7 ft / 1.1 m
 Roll period: 16.4 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.46
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.632
 Length to Beam Ratio: 4.59 : 1
 'Natural speed' for length: 18.55 kts
 Power going to wave formation at top speed: 55 %
 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:  18.00 ft / 5.49 m
    - Forecastle (20 %): 13.00 ft / 3.96 m
    - Mid (50 %):  13.00 ft / 3.96 m
    - Quarterdeck (15 %): 13.00 ft / 3.96 m
    - Stern:  13.00 ft / 3.96 m
    - Average freeboard: 13.40 ft / 4.08 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 78.8 %
  - Above water (accommodation/working, high = better): 84.7 %
 Waterplane Area: 19,440 Square feet or 1,806 Square metres
 Displacement factor (Displacement / loading): 101 %
 Structure weight / hull surface area: 142 lbs/sq ft or 694 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.89
  - Longitudinal: 2.75
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is cramped