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Sunday, January 02, 2005

I had to inflate the "Super Fast Battlecruiser" design to work with Springsharp

I am very interested in the Springsharp program, especially since I also have a program (although mine is not in the public domain, at this point). I just tried to make my alternate "Super Fast Battlecruiser" design work with Springsharp. I guess I am happy that something like what I would have liked to have is possible at all:
GB/CB/alt 6-shaft Super Fast, Great Britain Battlecruiser laid down 1922 (Engine 1926)

Displacement:
	41,777 t light; 42,680 t standard; 45,152 t normal; 47,130 t full load

Dimensions: Length overall / water x beam x draught
	874.66 ft / 867.00 ft x 119.00 ft x 34.00 ft (normal load)
	266.60 m / 264.26 m x 36.27 m  x 10.36 m

Armament:
     4 - 17.00" / 432 mm guns (2x2 guns), 2,456.50lbs / 1,114.25kg shells, 1922 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, evenly spread, all raised mounts
     16 - 4.00" / 102 mm guns (8x2 guns), 32.00lbs / 14.51kg shells, 1922 Model
	  Quick firing guns in deck mounts
	  on side, evenly spread, all raised mounts
	Weight of broadside 10,338 lbs / 4,689 kg
	Shells per gun, main battery: 0

Armour:
  - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.00" / 178 mm	575.00 ft / 175.26 m	16.00 ft / 4.88 m
	Ends:	Unarmoured
	  Main Belt covers 102 % of normal length
	  Main belt does not fully cover magazines and engineering spaces

  - Torpedo Bulkhead:
		1.50" / 38 mm	575.00 ft / 175.26 m	29.00 ft / 8.84 m

  - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.0" / 305 mm	7.00" / 178 mm		9.00" / 229 mm
	2nd:	1.00" / 25 mm	      -			      -

  - Armour deck: 3.00" / 76 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 6 shafts, 312,670 shp / 233,252 Kw = 38.00 kts
	Range 7,500nm at 15.00 kts
	Bunker at max displacement = 4,450 tons

Complement:
	1,548 - 2,013

Cost:
	£10.770 million / $43.079 million

Distribution of weights at normal displacement:
	Armament: 1,292 tons, 2.9 %
	Armour: 9,465 tons, 21.0 %
	   - Belts: 2,737 tons, 6.1 %
	   - Torpedo bulkhead: 925 tons, 2.0 %
	   - Armament: 2,007 tons, 4.4 %
	   - Armour Deck: 3,796 tons, 8.4 %
	   - Conning Tower: 0 tons, 0.0 %
	Machinery: 10,009 tons, 22.2 %
	Hull, fittings & equipment: 21,011 tons, 46.5 %
	Fuel, ammunition & stores: 3,375 tons, 7.5 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  58,836 lbs / 26,687 Kg = 24.0 x 17.0 " / 432 mm shells or 7.4 torpedoes
	Stability (Unstable if below 1.00): 1.06
	Metacentric height 7.3 ft / 2.2 m
	Roll period: 18.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 71 %
			- Recoil effect (Restricted arc if above 1.00): 0.47
	Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
	Hull has rise forward of midbreak
	  and transom stern
	Block coefficient: 0.451
	Length to Beam Ratio: 7.29 : 1
	'Natural speed' for length: 34.76 kts
	Power going to wave formation at top speed: 59 %
	Trim (Max stability = 0, Max steadiness = 100): 64
	Bow angle (Positive = bow angles forward): 4.00 degrees
	Stern overhang: 5.00 ft / 1.52 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		38.00 ft / 11.58 m
	   - Forecastle (32 %):	37.00 ft / 11.28 m
	   - Mid (38 %):		37.00 ft / 11.28 m (30.00 ft / 9.14 m aft of break)
	   - Quarterdeck (20 %):	30.00 ft / 9.14 m
	   - Stern:		31.00 ft / 9.45 m
	   - Average freeboard:	32.89 ft / 10.02 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 111.0 %
		- Above water (accommodation/working, high = better): 259.8 %
	Waterplane Area: 68,391 Square feet or 6,354 Square metres
	Displacement factor (Displacement / loading): 113 %
	Structure weight / hull surface area: 212 lbs/sq ft or 1,035 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.88
		- Overall: 1.02
	Hull space for machinery, storage, compartmentation is adequate
	Room for accommodation and workspaces is excellent
	Ship has slow, easy roll, a good, steady gun platform

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