The GB/DL/1906 design

I must admit to being disappointed at what Springsharp had to say about my friend Cliff's fast destroyer leader from 1906. To get a good rating, I had to reduce the speed from 35 knots to 31 knots. Even then, Springsharp was complaining about the compartmentation being cramped. This is sort of an odd ship, in the the guns are 4-88mm. Cliff's idea was that if the 88mm gun was good in land warfare, it should be as good in naval warfare. Hence, the GB/DL/1906 had 88's. This is the report for the ship:

GB/DL/1906, Great Britain Destroyer Leader laid down 1906 (Engine 1907)

Displacement:
	1,231 t light; 1,271 t standard; 1,392 t normal; 1,488 t full load

Dimensions: Length overall / water x beam x draught
	326.00 ft / 326.00 ft x 30.00 ft x 10.00 ft (normal load)
	99.36 m / 99.36 m x 9.14 m  x 3.05 m

Armament:
      4 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1906 Model
	  Quick firing guns in deck mounts 
	  on centreline, evenly spread, all raised mounts
	  Aft Main mounts separated by engine room
	Weight of broadside 83 lbs / 38 kg
	Shells per gun, main battery: 250
	2 - 21.0" / 533.4 mm above water torpedoes

Machinery:
	Oil fired boilers, steam turbines, 
	Direct drive, 2 shafts, 28,482 shp / 21,248 Kw = 31.00 kts
	Range 1,500nm at 15.00 kts
	Bunker at max displacement = 218 tons

Complement:
	113 - 148

Cost:
	£0.173 million / $0.691 million

Distribution of weights at normal displacement:
	Armament: 10 tons, 0.7 %
	Machinery: 864 tons, 62.1 %
	Hull, fittings & equipment: 357 tons, 25.6 %
	Fuel, ammunition & stores: 160 tons, 11.5 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  320 lbs / 145 Kg = 15.4 x 3.5 " / 88 mm shells or 0.2 torpedoes
	Stability (Unstable if below 1.00): 1.63
	Metacentric height 1.9 ft / 0.6 m
	Roll period: 9.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 60 %
			- Recoil effect (Restricted arc if above 1.00): 0.10
	Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
	Hull has rise forward of midbreak
	Block coefficient: 0.498
	Length to Beam Ratio: 10.87 : 1
	'Natural speed' for length: 18.06 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 (% = measuring location as a percentage of overall length):
	   - Stem:		20.00 ft / 6.10 m
	   - Forecastle (20 %):	19.00 ft / 5.79 m
	   - Mid (34 %):		18.00 ft / 5.49 m (12.00 ft / 3.66 m aft of break)
	   - Quarterdeck (15 %):	12.00 ft / 3.66 m
	   - Stern:		12.00 ft / 3.66 m
	   - Average freeboard:	14.39 ft / 4.39 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 206.3 %
		- Above water (accommodation/working, high = better): 126.2 %
	Waterplane Area: 6,504 Square feet or 604 Square metres
	Displacement factor (Displacement / loading): 42 %
	Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.48
		- Longitudinal: 1.90
		- Overall: 0.55
	Hull space for machinery, storage, compartmentation is extremely poor
	Room for accommodation and workspaces is excellent
	Good seaboat, rides out heavy weather easily