A very large US AA Light Cruiser: US/CL/1941 AA Large

I realized this morning that I would like to include a very large AA light cruiser in my suite of ship designs. This is the US/CL/1941 AA Large design. Unlike my other large cruisers, this one includes torpedo tubes, as that seems appropriate. The design may be underarmed, but it should easily handle the combination of armament, protection, speed, and range, and still have adequate strength, stability, and seakeeping ability. This is the Springsharp report:

US/CL/1941 AA Large, United States AA Light Cruiser laid down 1941 (Engine 1945)

Displacement:
 11,276 t light; 11,660 t standard; 12,650 t normal; 13,442 t full load

Dimensions: Length overall / water x beam x draught
 642.89 ft / 640.00 ft x 65.00 ft x 25.00 ft (normal load)
 195.95 m / 195.07 m x 19.81 m  x 7.62 m

Armament:
      16 - 5.10" / 130 mm guns (8x2 guns), 66.33lbs / 30.08kg shells, 1941 Model
   Dual purpose guns in deck mounts with hoists
   on side ends, evenly spread, all raised mounts - superfiring
      36 - 1.57" / 40.0 mm guns (9x4 guns), 1.95lbs / 0.89kg shells, 1941 Model
   Anti-aircraft guns in deck mounts with hoists
   on side ends, majority forward, all raised mounts - superfiring
 Weight of broadside 1,132 lbs / 513 kg
 Shells per gun, main battery: 200
 8 - 24.0" / 609.6 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 445.00 ft / 135.64 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 107 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm       -         -

   - Armour deck: 3.00" / 76 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 147,329 shp / 109,907 Kw = 36.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 1,782 tons

Complement:
 596 - 775

Cost:
 £6.394 million / $25.576 million

Distribution of weights at normal displacement:
 Armament: 141 tons, 1.1 %
 Armour: 2,741 tons, 21.7 %
    - Belts: 1,170 tons, 9.2 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 79 tons, 0.6 %
    - Armour Deck: 1,445 tons, 11.4 %
    - Conning Tower: 47 tons, 0.4 %
 Machinery: 3,720 tons, 29.4 %
 Hull, fittings & equipment: 4,674 tons, 36.9 %
 Fuel, ammunition & stores: 1,374 tons, 10.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   14,140 lbs / 6,414 Kg = 213.2 x 5.1 " / 130 mm shells or 1.6 torpedoes
 Stability (Unstable if below 1.00): 1.27
 Metacentric height 4.0 ft / 1.2 m
 Roll period: 13.6 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.23
 Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.426
 Length to Beam Ratio: 9.85 : 1
 'Natural speed' for length: 25.30 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 1.00 ft / 0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  36.00 ft / 10.97 m
    - Forecastle (20 %): 20.00 ft / 6.10 m
    - Mid (50 %):  20.00 ft / 6.10 m
    - Quarterdeck (15 %): 20.00 ft / 6.10 m
    - Stern:  20.00 ft / 6.10 m
    - Average freeboard: 21.28 ft / 6.49 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 104.7 %
  - Above water (accommodation/working, high = better): 137.6 %
 Waterplane Area: 26,041 Square feet or 2,419 Square metres
 Displacement factor (Displacement / loading): 112 %
 Structure weight / hull surface area: 107 lbs/sq ft or 521 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.55
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent