One of the alternative CM designs from 1915

This is another of the alternative fast minelayer designs from circa 1915 from the Red Book. I had optimistically hoped for 40 knots, but what I can get is 34 knots, which would have been fast for any real cruiser of the period. I was not willing to have a totally unarmoured cruiser minelayer, so instead, this is a cruiser with splinter protection, only (1in). The armament is 3-5in QF guns and 360 mines. The hull is flush decked with a high freeboard. This is the Springsharp report:

Ger/CM/1915 Alt, Germany Cruiser Minelayer laid down 1915 (Engine 1950)

Displacement:
 4,757 t light; 4,861 t standard; 5,200 t normal; 5,471 t full load

Dimensions: Length overall / water x beam x draught
 454.75 ft / 450.00 ft x 42.00 ft x 18.00 ft (normal load)
 138.61 m / 137.16 m x 12.80 m  x 5.49 m

Armament:
      3 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1915 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward, 1 raised mount
 Weight of broadside 188 lbs / 85 kg
 Shells per gun, main battery: 0

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 1.00" / 25 mm 300.00 ft / 91.44 m 9.00 ft / 2.74 m
 Ends: Unarmoured
   Main Belt covers 103 % of normal length
   Main belt does not fully cover magazines and engineering spaces

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

   - Armour deck: 1.00" / 25 mm, Conning tower: 2.00" / 51 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 83,015 shp / 61,929 Kw = 34.00 kts
 Range 4,500nm at 15.00 kts
 Bunker at max displacement = 610 tons

Complement:
 306 - 398

Cost:
 £0.675 million / $2.701 million

Distribution of weights at normal displacement:
 Armament: 23 tons, 0.5 %
 Armour: 390 tons, 7.5 %
    - Belts: 111 tons, 2.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 25 tons, 0.5 %
    - Armour Deck: 241 tons, 4.6 %
    - Conning Tower: 13 tons, 0.2 %
 Machinery: 1,986 tons, 38.2 %
 Hull, fittings & equipment: 1,997 tons, 38.4 %
 Fuel, ammunition & stores: 443 tons, 8.5 %
 Miscellaneous weights: 360 tons, 6.9 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   3,643 lbs / 1,652 Kg = 58.3 x 5.0 " / 127 mm shells or 0.7 torpedoes
 Stability (Unstable if below 1.00): 1.09
 Metacentric height 1.6 ft / 0.5 m
 Roll period: 13.9 seconds
 Steadiness - As gun platform (Average = 50 %): 60 %
   - Recoil effect (Restricted arc if above 1.00): 0.20
 Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.535
 Length to Beam Ratio: 10.71 : 1
 'Natural speed' for length: 21.21 kts
 Power going to wave formation at top speed: 66 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 3.00 ft / 0.91 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  25.00 ft / 7.62 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: 20.40 ft / 6.22 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 134.5 %
  - Above water (accommodation/working, high = better): 161.9 %
 Waterplane Area: 13,006 Square feet or 1,208 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 70 lbs/sq ft or 343 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.87
  - Longitudinal: 3.56
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent