An "edgy" 37 knot light cruiser: the Ger/CL/1915 design study

What I am calling here the Ger/CL/1915 design study is similar to the design that I had in the "Red Book", dating from the early 1970's. The ship is trying to be as fast as possible, with 8-6in guns. This is the sort of ship it is:

This is the Springsharp report:

Ger/CL/1915 design study, Germany Light Cruiser laid down 1915 (Engine 1950)

Displacement:
 8,806 t light; 9,085 t standard; 9,491 t normal; 9,815 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (555.00 ft / 555.00 ft) x 50.00 ft x (19.00 / 19.54 ft)
 (169.16 m / 169.16 m) x 15.24 m  x (5.79 / 5.96 m)

Armament:
      8 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Quick firing guns in turret on barbette mounts, 1915 Model
   4 x Single mounts on centreline ends, evenly spread
      4 - 3.50" / 88.9 mm 45.0 cal guns - 21.62lbs / 9.81kg shells, 150 per gun
   Anti-air guns in deck and hoist mounts, 1915 Model
   4 x Single mounts on sides, evenly spread
      Weight of broadside 1,001 lbs / 454 kg
      4 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.401 t each, 5.605 t total
 In 2 sets of deck mounted side rotating tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 2.00" / 51 mm 320.00 ft / 97.54 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 89 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  0.60" / 15 mm 320.00 ft / 97.54 m 19.00 ft / 5.79 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm 1.00" / 25 mm  2.00" / 51 mm

   - Armoured deck - multiple decks: 1.00" / 25 mm For and Aft decks
 Forecastle: 1.00" / 25 mm  Quarter deck: 1.00" / 25 mm

   - Conning towers: Forward 4.00" / 102 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 161,782 shp / 120,689 Kw = 37.00 kts
 Range 4,200nm at 14.00 kts
 Bunker at max displacement = 730 tons

Complement:
 480 - 625

Cost:
 £1.388 million / $5.554 million

Distribution of weights at normal displacement:
 Armament: 320 tons, 3.4 %
    - Guns: 314 tons, 3.3 %
    - Torpedoes: 6 tons, 0.1 %
 Armour: 1,042 tons, 11.0 %
    - Belts: 320 tons, 3.4 %
    - Torpedo bulkhead: 135 tons, 1.4 %
    - Armament: 159 tons, 1.7 %
    - Armour Deck: 389 tons, 4.1 %
    - Conning Tower: 39 tons, 0.4 %
 Machinery: 3,870 tons, 40.8 %
 Hull, fittings & equipment: 3,573 tons, 37.7 %
 Fuel, ammunition & stores: 685 tons, 7.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   5,948 lbs / 2,698 Kg = 55.1 x 6.0 " / 152 mm shells or 0.9 torpedoes
 Stability (Unstable if below 1.00): 1.08
 Metacentric height 2.1 ft / 0.6 m
 Roll period: 14.6 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.51
 Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
 Hull has rise forward of midbreak,
   a normal bow and a round stern
 Block coefficient (normal/deep): 0.630 / 0.633
 Length to Beam Ratio: 11.10 : 1
 'Natural speed' for length: 23.56 kts
 Power going to wave formation at top speed: 67 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  30.00 ft / 9.14 m,  29.00 ft / 8.84 m
    - Forward deck: 15.00 %,  29.00 ft / 8.84 m,  29.00 ft / 8.84 m
    - Aft deck: 50.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
    - Quarter deck: 15.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
    - Average freeboard:  23.88 ft / 7.28 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 236.9 %
  - Above water (accommodation/working, high = better): 185.2 %
 Waterplane Area: 20,870 Square feet or 1,939 Square metres
 Displacement factor (Displacement / loading): 97 %
 Structure weight / hull surface area: 89 lbs/sq ft or 437 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.90
  - Longitudinal: 2.71
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is extremely poor
 Room for accommodation and workspaces is excellent