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Sunday, January 09, 2005

I could make the 60,000 ton Ger/BB/1915 work with little problem, as well

I thought I would see what happened with a nominally 60,000 ton version of the Ger/BB/1915, as that was what I had originally envisioned. I wasn't able to do 60,000 tons, but I was able to make 61,475 tons work, and still get 23 knots. I had been happy to get 20 knots, so 23 knots is gravy. Remember that this is a ship with 9-18in/45 and 24-5in/50 guns.
Ger/BB/1915 A0, Germany Battleship laid down 1915

Displacement:
	54,583 t light; 57,059 t standard; 61,475 t normal; 65,008 t full load

Dimensions: Length overall / water x beam x draught
	751.22 ft / 750.00 ft x 130.00 ft x 36.00 ft (normal load)
	228.97 m / 228.60 m x 39.62 m  x 10.97 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1915 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, majority forward, all raised mounts - superfiring
	  Main guns limited to end-on fire
      24 - 5.00" / 127 mm guns (2x12 guns), 62.50lbs / 28.35kg shells, 1915 Model
	  Quick firing guns in turrets (on barbettes)
	  on side, evenly spread, all raised mounts
	Weight of broadside 27,744 lbs / 12,584 kg
	Shells per gun, main battery: 80

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.0" / 406 mm	400.00 ft / 121.92 m	16.00 ft / 4.88 m
	Ends:	Unarmoured
	  Main Belt covers 82 % of normal length

   - Torpedo Bulkhead:
		2.50" / 64 mm	400.00 ft / 121.92 m	32.00 ft / 9.75 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	16.0" / 406 mm	8.00" / 203 mm		15.0" / 381 mm
	2nd:	2.00" / 51 mm	2.00" / 51 mm		2.00" / 51 mm

   - Armour deck: 7.00" / 178 mm, Conning tower: 16.00" / 406 mm

Machinery:
	Oil fired boilers, steam turbines, 
	Geared drive, 4 shafts, 72,903 shp / 54,386 Kw = 23.00 kts
	Range 8,500nm at 15.00 kts
	Bunker at max displacement = 7,949 tons

Complement:
	1,951 - 2,537

Cost:
	£7.578 million / $30.314 million

Distribution of weights at normal displacement:
	Armament: 3,468 tons, 5.6 %
	Armour: 21,880 tons, 35.6 %
	   - Belts: 4,781 tons, 7.8 %
	   - Torpedo bulkhead: 1,184 tons, 1.9 %
	   - Armament: 6,030 tons, 9.8 %
	   - Armour Deck: 9,347 tons, 15.2 %
	   - Conning Tower: 537 tons, 0.9 %
	Machinery: 2,761 tons, 4.5 %
	Hull, fittings & equipment: 26,474 tons, 43.1 %
	Fuel, ammunition & stores: 6,892 tons, 11.2 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  107,694 lbs / 48,849 Kg = 36.9 x 18.0 " / 457 mm shells or 19.3 torpedoes
	Stability (Unstable if below 1.00): 1.00
	Metacentric height 7.4 ft / 2.3 m
	Roll period: 20.1 seconds
	Steadiness	- As gun platform (Average = 50 %): 92 %
			- Recoil effect (Restricted arc if above 1.00): 1.09
	Seaboat quality  (Average = 1.00): 1.83

Hull form characteristics:
	Hull has a flush deck
	Block coefficient: 0.613
	Length to Beam Ratio: 5.77 : 1
	'Natural speed' for length: 27.39 kts
	Power going to wave formation at top speed: 44 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 2.00 degrees
	Stern overhang: 0.00 ft / 0.00 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		35.00 ft / 10.67 m
	   - Forecastle (20 %):	30.00 ft / 9.14 m
	   - Mid (0 %):		30.00 ft / 9.14 m
	   - Quarterdeck (15 %):	30.00 ft / 9.14 m
	   - Stern:		30.00 ft / 9.14 m
	   - Average freeboard:	30.40 ft / 9.27 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 67.4 %
		- Above water (accommodation/working, high = better): 211.4 %
	Waterplane Area: 72,180 Square feet or 6,706 Square metres
	Displacement factor (Displacement / loading): 111 %
	Structure weight / hull surface area: 265 lbs/sq ft or 1,296 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.92
		- Longitudinal: 2.15
		- Overall: 1.00
	Hull space for machinery, storage, compartmentation is excellent
	Room for accommodation and workspaces is excellent
	Ship has slow, easy roll, a good, steady gun platform
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather

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