USS Maine BBN-72 (1950)

USS Maine, USA Stupid 83000t BBN laid down 1950

Displacement:
	77,445 t light; 83,000 t standard; 83,490 t normal; 83,882 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(876.40 ft / 820.00 ft) x 164.00 ft x (40.00 / 40.14 ft)
	(267.13 m / 249.94 m) x 49.99 m  x (12.19 / 12.24 m)

Armament:
      10 - 18.00" / 457 mm 47.0 cal guns - 3,033.28lbs / 1,375.87kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  2 x 3-gun mounts on centreline, evenly spread
	  2 x 2-gun mounts on centreline, evenly spread
		2 raised mounts
      40 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 2,000 per gun
	  Dual purpose guns in turret on barbette mounts, 1950 Model
	  20 x Twin mounts on sides, evenly spread
		8 raised mounts
      160 - 1.57" / 40.0 mm 56.0 cal guns - 2.11lbs / 0.96kg shells, 4,000 per gun
	  Anti-air guns in deck mounts, 1950 Model
	  40 x Quad mounts on sides, evenly spread
		20 raised mounts
      Weight of broadside 31,216 lbs / 14,159 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.0" / 406 mm	492.00 ft / 149.96 m	27.00 ft / 8.23 m
	Ends:	16.0" / 406 mm	328.00 ft / 99.97 m	9.00 ft / 2.74 m
	  Main Belt covers 92 % of normal length
	  Main Belt inclined 20.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		6.00" / 152 mm	740.00 ft / 225.55 m	46.00 ft / 14.02 m
	Beam between torpedo bulkheads 92.00 ft / 28.04 m

   - Hull void:
		6.00" / 152 mm	520.00 ft / 158.50 m	34.00 ft / 10.36 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	36.0" / 914 mm	12.0" / 305 mm		16.0" / 406 mm
	2nd:	4.00" / 102 mm	4.00" / 102 mm		4.00" / 102 mm
	3rd:	2.00" / 51 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 8.00" / 203 mm
	Forecastle: 2.00" / 51 mm  Quarter deck: 8.00" / 203 mm

   - Conning towers: Forward 36.00" / 914 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 4 shafts, 151,904 shp / 113,320 Kw = 28.00 kts
	Range 100nm at 20.00 kts
	Bunker at max displacement = 882 tons

Complement:
	2,455 - 3,192

Cost:
	£48.880 million / $195.519 million

Distribution of weights at normal displacement:
	Armament: 6,179 tons, 7.4 %
	   - Guns: 6,179 tons, 7.4 %
	Armour: 45,287 tons, 54.2 %
	   - Belts: 11,643 tons, 13.9 %
	   - Torpedo bulkhead: 7,557 tons, 9.1 %
	   - Void: 3,925 tons, 4.7 %
	   - Armament: 7,540 tons, 9.0 %
	   - Armour Deck: 13,140 tons, 15.7 %
	   - Conning Tower: 1,482 tons, 1.8 %
	Machinery: 3,634 tons, 4.4 %
	Hull, fittings & equipment: 21,945 tons, 26.3 %
	Fuel, ammunition & stores: 6,045 tons, 7.2 %
	Miscellaneous weights: 400 tons, 0.5 %
	   - On freeboard deck: 200 tons
	   - Above deck: 200 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  151,056 lbs / 68,518 Kg = 51.8 x 18.0 " / 457 mm shells or 51.4 torpedoes
	Stability (Unstable if below 1.00): 1.11
	Metacentric height 12.8 ft / 3.9 m
	Roll period: 19.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 85 %
			- Recoil effect (Restricted arc if above 1.00): 0.31
	Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and large transom stern
	Block coefficient (normal/deep): 0.543 / 0.544
	Length to Beam Ratio: 5.00 : 1
	'Natural speed' for length: 34.60 kts
	Power going to wave formation at top speed: 52 %
	Trim (Max stability = 0, Max steadiness = 100): 79
	Bow angle (Positive = bow angles forward): 45.00 degrees
	Stern overhang: 16.40 ft / 5.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	25.00 %,  40.00 ft / 12.19 m,  22.00 ft / 6.71 m
	   - Forward deck:	30.00 %,  22.00 ft / 6.71 m,  22.00 ft / 6.71 m
	   - Aft deck:	30.00 %,  22.00 ft / 6.71 m,  22.00 ft / 6.71 m
	   - Quarter deck:	15.00 %,  22.00 ft / 6.71 m,  31.00 ft / 9.45 m
	   - Average freeboard:		24.48 ft / 7.46 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 89.9 %
		- Above water (accommodation/working, high = better): 165.7 %
	Waterplane Area: 97,077 Square feet or 9,019 Square metres
	Displacement factor (Displacement / loading): 102 %
	Structure weight / hull surface area: 270 lbs/sq ft or 1,318 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.50
		- Overall: 1.02
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform

Low 406mm armoured belt aft wraps around the stern; low 102mm splinter belt forward up to the stem.