HIJMS Ashitaka (Pre/Early WWII)

HIJMS Ashitaka, Imperial Japanes Navy Battleship laid down 1939

Displacement:
	85,251 t light; 89,426 t standard; 94,205 t normal; 98,029 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(1,018.38 ft / 984.25 ft) x 118.11 ft x (42.65 / 44.13 ft)
	(310.40 m / 300.00 m) x 36.00 m  x (13.00 / 13.45 m)

Armament:
      8 - 18.11" / 460 mm 45.0 cal guns - 2,995.22lbs / 1,358.61kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1939 Model
	  2 x 2-gun mounts on centreline, forward deck forward
		1 raised mount - superfiring
	  2 x 2-gun mounts on centreline, aft deck aft
		1 raised mount aft - superfiring
      12 - 6.10" / 155 mm 60.0 cal guns - 124.45lbs / 56.45kg shells, 150 per gun
	  Dual purpose guns in turret on barbette mounts, 1939 Model
	  2 x 3-gun mounts on sides amidships
	  2 x 3-gun mounts on centreline ends, evenly spread
		2 double raised mounts
      12 - 5.00" / 127 mm 40.0 cal guns - 77.16lbs / 35.00kg shells, 300 per gun
	  Dual purpose guns in deck and hoist mounts, 1939 Model
	  6 x Twin mounts on sides, evenly spread
		2 raised mounts
      24 - 1.00" / 25.4 mm 60.0 cal guns - 0.57lbs / 0.26kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1939 Model
	  6 x Triple mounts on sides, evenly spread
		2 raised mounts
      4 - 0.52" / 13.2 mm 76.0 cal guns - 0.11lbs / 0.05kg shells, 2,500 per gun
	  Machine guns in deck mounts, 1939 Model
	  2 x Twin mounts on sides amidships
		2 double raised mounts
      Weight of broadside 26,395 lbs / 11,973 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.1" / 410 mm	639.76 ft / 195.00 m	13.06 ft / 3.98 m
	Ends:	7.99" / 203 mm	344.46 ft / 104.99 m	13.06 ft / 3.98 m
	Upper:	15.0" / 380 mm	639.76 ft / 195.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length
	  Main Belt inclined -20.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		7.48" / 190 mm	639.76 ft / 195.00 m	41.11 ft / 12.53 m
	Beam between torpedo bulkheads 95.14 ft / 29.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	25.6" / 650 mm	      -			23.6" / 600 mm
	2nd:	7.87" / 200 mm	      -			7.87" / 200 mm
	3rd:	5.00" / 127 mm	2.95" / 75 mm		5.00" / 127 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 9.02" / 229 mm
	Forecastle: 6.30" / 160 mm  Quarter deck: 6.30" / 160 mm

   - Conning towers: Forward 25.59" / 650 mm, Aft 23.62" / 600 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 180,267 shp / 134,479 Kw = 28.00 kts
	Range 10,000nm at 15.00 kts
	Bunker at max displacement = 8,603 tons

Complement:
	2,688 - 3,495

Cost:
	£35.780 million / $143.121 million

Distribution of weights at normal displacement:
	Armament: 5,242 tons, 5.6 %
	   - Guns: 5,242 tons, 5.6 %
	Armour: 44,341 tons, 47.1 %
	   - Belts: 10,290 tons, 10.9 %
	   - Torpedo bulkhead: 7,279 tons, 7.7 %
	   - Armament: 10,283 tons, 10.9 %
	   - Armour Deck: 14,294 tons, 15.2 %
	   - Conning Towers: 2,195 tons, 2.3 %
	Machinery: 4,877 tons, 5.2 %
	Hull, fittings & equipment: 30,115 tons, 32.0 %
	Fuel, ammunition & stores: 8,955 tons, 9.5 %
	Miscellaneous weights: 675 tons, 0.7 %
	   - Hull below water: 250 tons
	   - Hull above water: 185 tons
	   - On freeboard deck: 155 tons
	   - Above deck: 85 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  219,498 lbs / 99,563 Kg = 73.9 x 18.1 " / 460 mm shells or 58.0 torpedoes
	Stability (Unstable if below 1.00): 1.02
	Metacentric height 6.7 ft / 2.0 m
	Roll period: 19.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 67 %
			- Recoil effect (Restricted arc if above 1.00): 1.02
	Seaboat quality  (Average = 1.00): 1.87

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.665 / 0.669
	Length to Beam Ratio: 8.33 : 1
	'Natural speed' for length: 31.37 kts
	Power going to wave formation at top speed: 44 %
	Trim (Max stability = 0, Max steadiness = 100): 36
	Bow angle (Positive = bow angles forward): 35.00 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	17.50 %,  39.37 ft / 12.00 m,  36.09 ft / 11.00 m
	   - Forward deck:	32.50 %,  36.09 ft / 11.00 m,  36.09 ft / 11.00 m
	   - Aft deck:	32.50 %,  36.09 ft / 11.00 m,  36.09 ft / 11.00 m
	   - Quarter deck:	17.50 %,  36.09 ft / 11.00 m,  36.09 ft / 11.00 m
	   - Average freeboard:		36.32 ft / 11.07 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 53.5 %
		- Above water (accommodation/working, high = better): 230.9 %
	Waterplane Area: 90,283 Square feet or 8,388 Square metres
	Displacement factor (Displacement / loading): 120 %
	Structure weight / hull surface area: 234 lbs/sq ft or 1,141 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.59
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather

A large and relatively fast battleship, armed with 18.1 inch guns and, theoretically, armored against the same.