FY-1943a Fast Battleship Proposal

FY-1943a Battleship, Austro-Hungarian fast battleship proposal laid down 1950

Displacement:
	63,629 t light; 67,062 t standard; 78,909 t normal; 88,387 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(1,036.51 ft / 1,000.00 ft) x 122.00 ft (Bulges 122.01 ft) x (41.99 / 45.93 ft)
	(315.93 m / 304.80 m) x 37.19 m (Bulges 37.19 m)  x (12.80 / 14.00 m)

Armament:
      12 - 15.00" / 381 mm 50.0 cal guns - 1,937.86lbs / 879.00kg shells, 100 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  4 x 3-gun mounts on centreline ends, evenly spread
		2 raised mounts - superfiring
      20 - 5.00" / 127 mm 38.0 cal guns - 55.34lbs / 25.10kg shells, 450 per gun
	  Dual purpose guns in deck and hoist mounts, 1950 Model
	  10 x Twin mounts on sides, evenly spread
		4 raised mounts
      24 - 3.00" / 76.2 mm 50.0 cal guns - 13.01lbs / 5.90kg shells, 1,500 per gun
	  Dual purpose guns in deck mounts, 1950 Model
	  12 x Twin mounts on sides, evenly spread
		4 raised mounts
      56 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 3,000 per gun
	  Anti-air guns in deck mounts, 1950 Model
	  56 x Single mounts on sides, evenly spread
		24 raised mounts
      Weight of broadside 24,689 lbs / 11,199 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.0" / 305 mm	483.99 ft / 147.52 m	13.25 ft / 4.04 m
	Ends:	2.00" / 51 mm	515.98 ft / 157.27 m	13.25 ft / 4.04 m
	Upper:	2.00" / 51 mm	483.99 ft / 147.52 m	8.01 ft / 2.44 m
	  Main Belt covers 74 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		1.80" / 46 mm	483.99 ft / 147.52 m	38.25 ft / 11.66 m
	Beam between torpedo bulkheads 110.00 ft / 33.53 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	16.0" / 406 mm	9.50" / 241 mm		16.0" / 406 mm
	2nd:	2.00" / 51 mm	1.00" / 25 mm		2.00" / 51 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 5.50" / 140 mm
	Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 14.70" / 373 mm, Aft 14.70" / 373 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 6 shafts, 367,039 shp / 273,811 Kw = 35.00 kts
	Range 17,000nm at 20.00 kts
	Bunker at max displacement = 21,325 tons

Complement:
	2,353 - 3,060

Cost:
	£45.303 million / $181.212 million

Distribution of weights at normal displacement:
	Armament: 5,131 tons, 6.5 %
	   - Guns: 5,131 tons, 6.5 %
	Armour: 20,399 tons, 25.9 %
	   - Belts: 4,285 tons, 5.4 %
	   - Torpedo bulkhead: 1,233 tons, 1.6 %
	   - Armament: 6,890 tons, 8.7 %
	   - Armour Deck: 6,825 tons, 8.6 %
	   - Conning Towers: 1,165 tons, 1.5 %
	Machinery: 8,781 tons, 11.1 %
	Hull, fittings & equipment: 29,318 tons, 37.2 %
	Fuel, ammunition & stores: 15,280 tons, 19.4 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  134,436 lbs / 60,979 Kg = 79.7 x 15.0 " / 381 mm shells or 18.0 torpedoes
	Stability (Unstable if below 1.00): 1.03
	Metacentric height 7.1 ft / 2.2 m
	Roll period: 19.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 75 %
			- Recoil effect (Restricted arc if above 1.00): 0.98
	Seaboat quality  (Average = 1.00): 1.50

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.539 / 0.552
	Length to Beam Ratio: 8.20 : 1
	'Natural speed' for length: 31.62 kts
	Power going to wave formation at top speed: 52 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 35.00 degrees
	Stern overhang: 5.00 ft / 1.52 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	25.80 %,  45.00 ft / 13.72 m,  38.00 ft / 11.58 m
	   - Forward deck:	24.20 %,  38.00 ft / 11.58 m,  38.00 ft / 11.58 m
	   - Aft deck:	24.20 %,  38.00 ft / 11.58 m,  38.00 ft / 11.58 m
	   - Quarter deck:	25.80 %,  38.00 ft / 11.58 m,  38.00 ft / 11.58 m
	   - Average freeboard:		38.72 ft / 11.80 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 71.2 %
		- Above water (accommodation/working, high = better): 259.2 %
	Waterplane Area: 84,270 Square feet or 7,829 Square metres
	Displacement factor (Displacement / loading): 131 %
	Structure weight / hull surface area: 237 lbs/sq ft or 1,159 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.93
		- Longitudinal: 1.80
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Good seaboat, rides out heavy weather easily