The very large destroyer Ger/DD/1915

In this case, there are few specifications to go with the pencil sketch. I am even uncertain of the designation. Besides the drawing, the only specifications given were:

4-5in guns, 6-23.6in TT
Dimensions: 390ft x 40ft

I extrapolated from that to be able to do a Springsharp design. I thought that a ship of this length should be able to achieve 36 knots. To do that, I had to increase the freeboard by a foot, to maintain adequate seakeeping. This is the Springsharp report:

Ger/DD/1915, Germany Destroyer laid down 1915 (Engine 1933)

Displacement:
 2,225 t light; 2,297 t standard; 2,580 t normal; 2,806 t full load

Dimensions: Length overall / water x beam x draught
 392.36 ft / 390.00 ft x 40.00 ft x 13.00 ft (normal load)
 119.59 m / 118.87 m x 12.19 m  x 3.96 m

Armament:
      4 - 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, evenly spread, 2 raised mounts - superfiring
 Weight of broadside 250 lbs / 113 kg
 Shells per gun, main battery: 150
 6 - 23.6" / 600.0001 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 59,049 shp / 44,051 Kw = 36.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 509 tons

Complement:
 180 - 235

Cost:
 £0.446 million / $1.784 million

Distribution of weights at normal displacement:
 Armament: 31 tons, 1.2 %
 Machinery: 1,447 tons, 56.1 %
 Hull, fittings & equipment: 747 tons, 28.9 %
 Fuel, ammunition & stores: 355 tons, 13.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   703 lbs / 319 Kg = 11.2 x 5.0 " / 127 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.49
 Metacentric height 2.5 ft / 0.8 m
 Roll period: 10.6 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.25
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has rise forward of midbreak
   and transom stern
 Block coefficient: 0.445
 Length to Beam Ratio: 9.75 : 1
 'Natural speed' for length: 22.74 kts
 Power going to wave formation at top speed: 70 %
 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:  26.00 ft / 7.92 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (34 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 18.88 ft / 5.75 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 190.2 %
  - Above water (accommodation/working, high = better): 128.3 %
 Waterplane Area: 10,296 Square feet or 957 Square metres
 Displacement factor (Displacement / loading): 70 %
 Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.45
  - Longitudinal: 2.41
  - Overall: 0.53
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent