SGNS Inconceivable

SGNS Inconceivable, ??? Inconceivable-class Battleship laid down 1936 (Engine 1938)

Displacement:
	104,758 t light; 108,866 t standard; 112,749 t normal; 115,854 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(1,082.68 ft / 1,021.64 ft) x 147.64 ft x (58.40 / 59.53 ft)
	(330.00 m / 311.40 m) x 45.00 m  x (17.80 / 18.14 m)

Armament:
      10 - 15.00" / 381 mm 45.0 cal guns - 1,937.86lbs / 879.00kg shells, 130 per gun
	  Breech loading guns in turret on barbette mounts, 1939 Model
	  2 x 2-gun mounts on centreline, evenly spread
		2 raised mounts
	  2 x 3-gun mounts on centreline, evenly spread
      6 - 6.00" / 152 mm 50.0 cal guns - 111.99lbs / 50.80kg shells, 200 per gun
	  Dual purpose guns in turret on barbette mounts, 1939 Model
	  2 x 3-gun mounts on centreline, evenly spread
		2 double raised mounts
      20 - 4.72" / 120 mm 50.0 cal guns - 61.99lbs / 28.12kg shells, 250 per gun
	  Dual purpose guns in deck and hoist mounts, 1939 Model
	  6 x Twin mounts on sides, forward deck aft
		2 raised mounts - superfiring
	  4 x Twin mounts on sides, aft deck forward
		2 raised mounts - superfiring
      96 - 1.57" / 40.0 mm 45.0 cal guns - 2.01lbs / 0.91kg shells, 1,800 per gun
	  Anti-air guns in deck mounts, 1923 Model
	  20 x 2 row octuple mounts on sides, evenly spread
		4 raised mounts
	  2 x 2 row quad mounts on centreline, evenly spread
		2 double raised mounts
      24 - 0.50" / 12.7 mm 62.0 cal guns - 0.08lbs / 0.04kg shells, 12,500 per gun
	  Machine guns in deck mounts, 1936 Model
	  6 x Quad mounts on sides, evenly spread
      Weight of broadside 21,485 lbs / 9,746 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	23.6" / 600 mm	664.07 ft / 202.41 m	14.57 ft / 4.44 m
	Ends:	2.36" / 60 mm	357.55 ft / 108.98 m	14.57 ft / 4.44 m
	Upper:	2.36" / 60 mm	664.07 ft / 202.41 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length
	  Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		7.87" / 200 mm	664.07 ft / 202.41 m	47.97 ft / 14.62 m
	Beam between torpedo bulkheads 141.08 ft / 43.00 m

   - Hull void:
		0.00" / 0 mm	  0.00 ft / 0.00 m	0.00 ft / 0.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	23.6" / 600 mm	10.6" / 270 mm		23.6" / 600 mm
	2nd:	10.6" / 270 mm	7.09" / 180 mm		10.6" / 270 mm
	3rd:	4.72" / 120 mm	2.36" / 60 mm		4.72" / 120 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 9.84" / 250 mm
	Forecastle: 2.36" / 60 mm  Quarter deck: 2.36" / 60 mm

   - Conning towers: Forward 23.62" / 600 mm, Aft 7.87" / 200 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 148,017 shp / 110,421 Kw = 26.16 kts
	Range 8,000nm at 14.00 kts
	Bunker at max displacement = 6,988 tons

Complement:
	3,076 - 3,999

Cost:
	£31.761 million / $127.044 million

Distribution of weights at normal displacement:
	Armament: 4,020 tons, 3.6 %
	   - Guns: 4,020 tons, 3.6 %
	Armour: 51,474 tons, 45.7 %
	   - Belts: 10,729 tons, 9.5 %
	   - Torpedo bulkhead: 9,280 tons, 8.2 %
	   - Armament: 14,751 tons, 13.1 %
	   - Armour Deck: 15,130 tons, 13.4 %
	   - Conning Towers: 1,584 tons, 1.4 %
	Machinery: 4,053 tons, 3.6 %
	Hull, fittings & equipment: 44,687 tons, 39.6 %
	Fuel, ammunition & stores: 7,990 tons, 7.1 %
	Miscellaneous weights: 525 tons, 0.5 %
	   - Hull below water: 125 tons
	   - Hull void weights: 125 tons
	   - Hull above water: 125 tons
	   - On freeboard deck: 75 tons
	   - Above deck: 75 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  485,973 lbs / 220,434 Kg = 288.0 x 15.0 " / 381 mm shells or 209.3 torpedoes
	Stability (Unstable if below 1.00): 1.01
	Metacentric height 9.2 ft / 2.8 m
	Roll period: 20.4 seconds
	Steadiness	- As gun platform (Average = 50 %): 72 %
			- Recoil effect (Restricted arc if above 1.00): 0.64
	Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.448 / 0.452
	Length to Beam Ratio: 6.92 : 1
	'Natural speed' for length: 31.96 kts
	Power going to wave formation at top speed: 36 %
	Trim (Max stability = 0, Max steadiness = 100): 36
	Bow angle (Positive = bow angles forward): 35.00 degrees
	Stern overhang: 19.69 ft / 6.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  59.06 ft / 18.00 m,  59.06 ft / 18.00 m
	   - Forward deck:	30.00 %,  59.06 ft / 18.00 m,  59.06 ft / 18.00 m
	   - Aft deck:	35.00 %,  59.06 ft / 18.00 m,  59.06 ft / 18.00 m
	   - Quarter deck:	15.00 %,  59.06 ft / 18.00 m,  59.06 ft / 18.00 m
	   - Average freeboard:		59.06 ft / 18.00 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 29.8 %
		- Above water (accommodation/working, high = better): 351.3 %
	Waterplane Area: 96,055 Square feet or 8,924 Square metres
	Displacement factor (Displacement / loading): 146 %
	Structure weight / hull surface area: 255 lbs/sq ft or 1,243 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.83
		- Longitudinal: 5.07
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather