The Ger/CL/1915 (not Ger/CL/1916) revised design

The next page in the Red Book gives the correct designation of the light cruiser and the intended armouring plan. That plan created difficulties, but I was able to get a fairly viable Springsharp report by sacrificing other capabilities, so that the armour could be carried. The displacement rose sharply to 7,300 tons normal. I did have to fudge and increase the draft to 18ft. The speed feel to 29.5 knots and the range to 4,500nm at 12 knots. This is the Springsharp report:

Ger/CL/1915, Germany Light Cruiser laid down 1915

Displacement:
 6,750 t light; 6,896 t standard; 7,300 t normal; 7,624 t full load

Dimensions: Length overall / water x beam x draught
 478.96 ft / 475.00 ft x 48.00 ft x 18.00 ft (normal load)
 145.99 m / 144.78 m x 14.63 m  x 5.49 m

Armament:
      6 - 6.00" / 152 mm guns (3x2 guns), 108.00lbs / 48.99kg shells, 1915 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority aft, 1 raised mount aft - superfiring
 Weight of broadside 648 lbs / 294 kg
 Shells per gun, main battery: 0
 4 - 23.6" / 600.0001 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.25" / 108 mm 175.00 ft / 53.34 m 12.50 ft / 3.81 m
 Ends: 3.00" / 76 mm 290.00 ft / 88.39 m 12.50 ft / 3.81 m
   10.00 ft / 3.05 m Unarmoured ends
   Main Belt covers 57 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 330.00 ft / 100.58 m 13.00 ft / 3.96 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.25" / 108 mm 4.25" / 108 mm  4.25" / 108 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.25" / 108 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 58,129 shp / 43,364 Kw = 29.50 kts
 Range 4,500nm at 12.00 kts
 Bunker at max displacement = 728 tons

Complement:
 394 - 513

Cost:
 £0.891 million / $3.564 million

Distribution of weights at normal displacement:
 Armament: 81 tons, 1.1 %
 Armour: 1,932 tons, 26.5 %
    - Belts: 834 tons, 11.4 %
    - Torpedo bulkhead: 317 tons, 4.3 %
    - Armament: 116 tons, 1.6 %
    - Armour Deck: 630 tons, 8.6 %
    - Conning Tower: 34 tons, 0.5 %
 Machinery: 2,202 tons, 30.2 %
 Hull, fittings & equipment: 2,535 tons, 34.7 %
 Fuel, ammunition & stores: 550 tons, 7.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   8,122 lbs / 3,684 Kg = 75.2 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.18
 Metacentric height 2.3 ft / 0.7 m
 Roll period: 13.4 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.37
 Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.623
 Length to Beam Ratio: 9.90 : 1
 'Natural speed' for length: 21.79 kts
 Power going to wave formation at top speed: 61 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (32 %):  26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 20.72 ft / 6.32 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 181.6 %
  - Above water (accommodation/working, high = better): 135.8 %
 Waterplane Area: 17,030 Square feet or 1,582 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 80 lbs/sq ft or 389 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.05
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent