BBV Shinano (42 knots)

BBV Shinano (WSG), Japanese Aviation Battleship laid down 1950

Displacement:
	197,082 t light; 205,207 t standard; 213,066 t normal; 219,352 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(1,520.68 ft / 1,476.38 ft) x 164.04 ft x (46.65 / 47.83 ft)
	(463.50 m / 450.00 m) x 50.00 m  x (14.22 / 14.58 m)

Armament:
      12 - 18.11" / 460 mm 50.0 cal guns - 3,218.75lbs / 1,460.00kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  3 x 4-gun mounts on centreline, forward deck forward
		1 raised mount - superfiring
      24 - 3.94" / 100 mm 65.0 cal guns - 28.66lbs / 13.00kg shells, 400 per gun
	  Dual purpose guns in turret on barbette mounts, 1950 Model
	  12 x 2-gun mounts on sides, evenly spread
		6 raised mounts
      224 - 1.57" / 40.0 mm 56.3 cal guns - 1.98lbs / 0.90kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1950 Model
	  42 x Quad mounts on sides, evenly spread
		18 raised mounts
	  14 x Quad mounts on centreline, forward evenly spread
		6 raised mounts
      Weight of broadside 39,756 lbs / 18,033 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	26.0" / 660 mm	795.77 ft / 242.55 m	15.35 ft / 4.68 m
	Ends:	1.00" / 25 mm	680.58 ft / 207.44 m	15.35 ft / 4.68 m
	Upper:	21.3" / 540 mm	795.77 ft / 242.55 m	8.01 ft / 2.44 m
	  Main Belt covers 83 % of normal length
	  Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		15.0" / 380 mm	795.77 ft / 242.55 m	44.91 ft / 13.69 m
	Beam between torpedo bulkheads 131.23 ft / 40.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	23.6" / 600 mm	10.0" / 254 mm		21.7" / 550 mm
	2nd:	7.09" / 180 mm	3.15" / 80 mm		7.09" / 180 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 9.02" / 229 mm
	Forecastle: 2.36" / 60 mm  Quarter deck: 2.36" / 60 mm

   - Conning towers: Forward 25.98" / 660 mm, Aft 21.26" / 540 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 18 shafts, 1,265,169 shp / 943,816 Kw = 42.00 kts
	Range 10,000nm at 15.00 kts
	Bunker at max displacement = 14,145 tons

Complement:
	4,958 - 6,446

Cost:
	£118.771 million / $475.086 million

Distribution of weights at normal displacement:
	Armament: 8,343 tons, 3.9 %
	   - Guns: 8,343 tons, 3.9 %
	Armour: 80,852 tons, 37.9 %
	   - Belts: 20,043 tons, 9.4 %
	   - Torpedo bulkhead: 19,785 tons, 9.3 %
	   - Armament: 12,359 tons, 5.8 %
	   - Armour Deck: 25,035 tons, 11.7 %
	   - Conning Towers: 3,631 tons, 1.7 %
	Machinery: 30,267 tons, 14.2 %
	Hull, fittings & equipment: 72,070 tons, 33.8 %
	Fuel, ammunition & stores: 15,984 tons, 7.5 %
	Miscellaneous weights: 5,550 tons, 2.6 %
	   - Hull below water: 1,500 tons
	   - Hull above water: 1,500 tons
	   - On freeboard deck: 1,800 tons
	   - Above deck: 750 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  363,229 lbs / 164,758 Kg = 122.3 x 18.1 " / 460 mm shells or 94.8 torpedoes
	Stability (Unstable if below 1.00): 1.11
	Metacentric height 12.8 ft / 3.9 m
	Roll period: 19.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 75 %
			- Recoil effect (Restricted arc if above 1.00): 0.51
	Seaboat quality  (Average = 1.00): 1.34

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.660 / 0.663
	Length to Beam Ratio: 9.00 : 1
	'Natural speed' for length: 38.42 kts
	Power going to wave formation at top speed: 53 %
	Trim (Max stability = 0, Max steadiness = 100): 56
	Bow angle (Positive = bow angles forward): 35.00 degrees
	Stern overhang: 9.84 ft / 3.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	23.05 %,  49.21 ft / 15.00 m,  45.93 ft / 14.00 m
	   - Forward deck:	26.95 %,  45.93 ft / 14.00 m,  45.93 ft / 14.00 m
	   - Aft deck:	26.95 %,  45.93 ft / 14.00 m,  45.93 ft / 14.00 m
	   - Quarter deck:	23.05 %,  45.93 ft / 14.00 m,  45.93 ft / 14.00 m
	   - Average freeboard:		46.23 ft / 14.09 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 82.9 %
		- Above water (accommodation/working, high = better): 330.4 %
	Waterplane Area: 187,235 Square feet or 17,395 Square metres
	Displacement factor (Displacement / loading): 115 %
	Structure weight / hull surface area: 282 lbs/sq ft or 1,376 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.99
		- Longitudinal: 1.07
		- 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