BBV Shinano Rebalance 3

JS Shinano Rebalance 3, JMSDF Aviation Battleship laid down 1950

Displacement:
	67,444 t light; 71,118 t standard; 75,035 t normal; 78,169 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(1,155.19 ft / 1,115.49 ft) x 121.39 ft x (34.45 / 35.60 ft)
	(352.10 m / 340.00 m) x 37.00 m  x (10.50 / 10.85 m)

Armament:
      8 - 18.11" / 460 mm 50.0 cal guns - 3,218.75lbs / 1,460.00kg shells, 130 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  2 x 4-gun mounts on centreline, forward deck forward
		1 raised mount - superfiring
      16 - 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
	  4 x 2-gun mounts on sides, forward deck aft
		2 raised mounts - superfiring
	  4 x 2-gun mounts on sides, aft deck forward
		2 raised mounts - superfiring
      96 - 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
	  20 x Quad mounts on sides, evenly spread
		10 raised mounts
	  4 x Quad mounts on centreline, forward evenly spread
      Weight of broadside 26,399 lbs / 11,974 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	2.17" / 55 mm	401.57 ft / 122.40 m	13.22 ft / 4.03 m
	Ends:	1.00" / 25 mm	713.88 ft / 217.59 m	13.22 ft / 4.03 m
	Upper:	18.1" / 460 mm	401.57 ft / 122.40 m	8.01 ft / 2.44 m
	  Main Belt covers 55 % of normal length
	  Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		14.2" / 360 mm	401.57 ft / 122.40 m	31.89 ft / 9.72 m
	Beam between torpedo bulkheads 118.11 ft / 36.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	22.4" / 570 mm	9.06" / 230 mm		21.3" / 540 mm
	2nd:	7.09" / 180 mm	3.15" / 80 mm		7.09" / 180 mm

   - Box over machinery & magazines:
	9.02" / 229 mm
	Forecastle: 2.36" / 60 mm  Quarter deck: 2.36" / 60 mm

   - Conning towers: Forward 22.44" / 570 mm, Aft 20.08" / 510 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 150,020 shp / 111,915 Kw = 28.02 kts
	Range 10,000nm at 15.00 kts
	Bunker at max displacement = 7,051 tons

Complement:
	2,266 - 2,946

Cost:
	£43.457 million / $173.828 million

Distribution of weights at normal displacement:
	Armament: 5,532 tons, 7.4 %
	   - Guns: 5,532 tons, 7.4 %
	Armour: 24,532 tons, 32.7 %
	   - Belts: 3,613 tons, 4.8 %
	   - Torpedo bulkhead: 6,716 tons, 8.9 %
	   - Armament: 7,354 tons, 9.8 %
	   - Armour Deck: 5,220 tons, 7.0 %
	   - Conning Towers: 1,630 tons, 2.2 %
	Machinery: 3,589 tons, 4.8 %
	Hull, fittings & equipment: 28,241 tons, 37.6 %
	Fuel, ammunition & stores: 7,591 tons, 10.1 %
	Miscellaneous weights: 5,550 tons, 7.4 %
	   - 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):
	  175,454 lbs / 79,585 Kg = 59.1 x 18.1 " / 460 mm shells or 40.1 torpedoes
	Stability (Unstable if below 1.00): 1.07
	Metacentric height 7.6 ft / 2.3 m
	Roll period: 18.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 61 %
			- Recoil effect (Restricted arc if above 1.00): 0.99
	Seaboat quality  (Average = 1.00): 1.89

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.563 / 0.568
	Length to Beam Ratio: 9.19 : 1
	'Natural speed' for length: 33.40 kts
	Power going to wave formation at top speed: 36 %
	Trim (Max stability = 0, Max steadiness = 100): 32
	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:	32.00 %,  42.65 ft / 13.00 m,  39.37 ft / 12.00 m
	   - Forward deck:	18.00 %,  39.37 ft / 12.00 m,  39.37 ft / 12.00 m
	   - Aft deck:	18.00 %,  39.37 ft / 12.00 m,  39.37 ft / 12.00 m
	   - Quarter deck:	32.00 %,  39.37 ft / 12.00 m,  39.37 ft / 12.00 m
	   - Average freeboard:		39.79 ft / 12.13 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 55.3 %
		- Above water (accommodation/working, high = better): 316.6 %
	Waterplane Area: 95,661 Square feet or 8,887 Square metres
	Displacement factor (Displacement / loading): 119 %
	Structure weight / hull surface area: 256 lbs/sq ft or 1,251 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.62
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather

JS Shinano is a Yashima-class Aviation Battleship in service with the JMSDF. Laid down in the early 1990's, prior to the collapse of the Soviet Union, she was intended to serve primarily as a naval gunfire support vessel, with carrying capacity for a number of helicopters and V/STOL fighters.