The Ger/CL/1914 design

I have a nice pencil sketch and a specification for the Ger/CL/1914 light cruiser design dating from 1971. The ship is a very German-looking three-stacked ship. This is the original specification:

Ger/CL/1914  40 mines  3,500 tons Standard 9-5in QF 4-21in TT  430ft x 40ft x 16ft
  32 knots  60,000 SHP @ 45 SHP/ton  Cp=0.56
  Machinery= 1,335 tons
  Hull=      1,500 tons
  Protection=  110 tons   1in protective deck
  700 tons oil fuel  105 tons of feed water  4,305 tons full load 
  Cost=£315,000

This is the Springsharp report for the actual design implemented:

Ger/CL/1914, Germany Light Cruiser laid down 1914 (Engine 1945)

Displacement:
 3,370 t light; 3,501 t standard; 3,920 t normal; 4,255 t full load

Dimensions: Length overall / water x beam x draught
 433.75 ft / 430.00 ft x 40.00 ft x 16.00 ft (normal load)
 132.21 m / 131.06 m x 12.19 m  x 4.88 m

Armament:
      3 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority aft, 1 raised mount aft
      2 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on side, all forward
      4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1914 Model
   Breech loading guns in deck mounts with hoists
   on side, all amidships
 Weight of broadside 563 lbs / 255 kg
 Shells per gun, main battery: 150
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 3rd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 1.00" / 25 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 53,979 shp / 40,268 Kw = 32.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 753 tons

Complement:
 247 - 322

Cost:
 £0.468 million / $1.873 million

Distribution of weights at normal displacement:
 Armament: 70 tons, 1.8 %
 Armour: 385 tons, 9.8 %
    - Belts: 0 tons, 0.0 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 152 tons, 3.9 %
    - Armour Deck: 212 tons, 5.4 %
    - Conning Tower: 21 tons, 0.5 %
 Machinery: 1,363 tons, 34.8 %
 Hull, fittings & equipment: 1,512 tons, 38.6 %
 Fuel, ammunition & stores: 550 tons, 14.0 %
 Miscellaneous weights: 40 tons, 1.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   2,706 lbs / 1,227 Kg = 43.3 x 5.0 " / 127 mm shells or 0.7 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 1.6 ft / 0.5 m
 Roll period: 13.2 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.50
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.499
 Length to Beam Ratio: 10.75 : 1
 'Natural speed' for length: 20.74 kts
 Power going to wave formation at top speed: 63 %
 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:  25.00 ft / 7.62 m
    - Forecastle (20 %): 22.00 ft / 6.71 m
    - Mid (33 %):  22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
    - Quarterdeck (15 %): 14.00 ft / 4.27 m
    - Stern:  14.00 ft / 4.27 m
    - Average freeboard: 16.88 ft / 5.15 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 127.8 %
  - Above water (accommodation/working, high = better): 115.6 %
 Waterplane Area: 11,445 Square feet or 1,063 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 68 lbs/sq ft or 330 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.84
  - Longitudinal: 2.14
  - Overall: 0.92
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is adequate