1941 NEW IRONSIDES

NEW IRONSIDES, EAGLELAND Broadside Casemate Ram laid down 1941

Displacement:
	41,317 t light; 45,000 t standard; 49,975 t normal; 53,955 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(824.48 ft / 800.00 ft) x 108.00 ft x (37.00 / 39.23 ft)
	(251.30 m / 243.84 m) x 32.92 m  x (11.28 / 11.96 m)

Armament:
      16 - 18.00" / 457 mm 48.0 cal guns - 3,850.00lbs / 1,746.33kg shells, 50 per gun
	  Breech loading guns in casemate mounts, 1941 Model
	  16 x Single mounts on sides, evenly spread
      16 - 12.00" / 305 mm 10.0 cal guns - 699.99lbs / 317.51kg shells, 50 per gun
	  Breech loading guns in casemate mounts, 1890 Model
	  16 x Single mounts on sides, evenly spread
		16 hull mounts in casemates- Limited use in heavy seas
      42 - 5.00" / 127 mm 54.0 cal guns - 70.00lbs / 31.75kg shells, 350 per gun
	  Dual purpose guns in casemate mounts, 1940 Model
	  32 x Single mounts on sides, evenly spread
		32 raised mounts
	  10 x Single mounts on side ends, majority aft
		4 raised mounts
      48 - 1.46" / 37.0 mm 56.0 cal guns - 1.67lbs / 0.76kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1937 Model
	  12 x 2 row quad mounts on centreline, evenly spread
		12 double raised mounts
      Weight of broadside 75,820 lbs / 34,391 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.0" / 406 mm	480.00 ft / 146.30 m	12.47 ft / 3.80 m
	Ends:	2.00" / 51 mm	319.98 ft / 97.53 m	12.47 ft / 3.80 m
	Upper:	8.00" / 203 mm	480.00 ft / 146.30 m	8.00 ft / 2.44 m
	  Main Belt covers 92 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		4.00" / 102 mm	480.00 ft / 146.30 m	30.00 ft / 9.14 m
	Beam between torpedo bulkheads 82.00 ft / 24.99 m

   - Hull void:
		2.00" / 51 mm	480.00 ft / 146.30 m	30.00 ft / 9.14 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	16.0" / 406 mm	5.00" / 127 mm		16.0" / 406 mm
	2nd:	16.0" / 406 mm	2.00" / 51 mm		2.00" / 51 mm
	3rd:	4.00" / 102 mm	2.00" / 51 mm		8.00" / 203 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 5.00" / 127 mm
	Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 18.00" / 457 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 4 shafts, 96,916 shp / 72,300 Kw = 27.00 kts
	Range 15,000nm at 15.00 kts
	Bunker at max displacement = 8,955 tons

Complement:
	1,670 - 2,172

Cost:
	£27.981 million / $111.924 million

Distribution of weights at normal displacement:
	Armament: 6,493 tons, 13.0 %
	   - Guns: 6,493 tons, 13.0 %
	Armour: 18,592 tons, 37.2 %
	   - Belts: 5,796 tons, 11.6 %
	   - Torpedo bulkhead: 2,131 tons, 4.3 %
	   - Void: 1,066 tons, 2.2 %
	   - Armament: 4,043 tons, 8.1 %
	   - Armour Deck: 5,031 tons, 10.1 %
	   - Conning Tower: 526 tons, 1.1 %
	Machinery: 2,561 tons, 5.1 %
	Hull, fittings & equipment: 13,071 tons, 26.2 %
	Fuel, ammunition & stores: 8,658 tons, 17.3 %
	Miscellaneous weights: 600 tons, 1.2 %
	   - On freeboard deck: 600 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  72,537 lbs / 32,902 Kg = 24.9 x 18.0 " / 457 mm shells or 11.8 torpedoes
	Stability (Unstable if below 1.00): 1.53
	Metacentric height 11.6 ft / 3.5 m
	Roll period: 13.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 80 %
			- Recoil effect (Restricted arc if above 1.00): 0.71
	Seaboat quality  (Average = 1.00): 1.60

Hull form characteristics:
	Hull has raised forecastle, raised quarterdeck ,
	  a ram bow and large transom stern
	Block coefficient (normal/deep): 0.547 / 0.557
	Length to Beam Ratio: 7.41 : 1
	'Natural speed' for length: 32.90 kts
	Power going to wave formation at top speed: 46 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 30.00 degrees
	Stern overhang: 6.00 ft / 1.83 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  32.00 ft / 9.75 m,  28.00 ft / 8.53 m
	   - Forward deck:	30.00 %,  18.00 ft / 5.49 m,  16.00 ft / 4.88 m
	   - Aft deck:	30.00 %,  16.00 ft / 4.88 m,  18.00 ft / 5.49 m
	   - Quarter deck:	20.00 %,  28.00 ft / 8.53 m,  32.00 ft / 9.75 m
	   - Average freeboard:		22.12 ft / 6.74 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 90.0 %
		- Above water (accommodation/working, high = better): 121.4 %
	Waterplane Area: 62,604 Square feet or 5,816 Square metres
	Displacement factor (Displacement / loading): 99 %
	Structure weight / hull surface area: 211 lbs/sq ft or 1,032 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.94
		- Longitudinal: 1.69
		- Overall: 1.00
	Adequate 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

18"/58 Mark 1 (1920)
12"/10 Mark 1 (1890)
5"/54 Mark 16 (1940)
37mm/56 T9 (1937)

600t misc includes 2x heavy cranes, 2x rotating catapults, hangar containing 4 OS2Us, and 4x Elco 80ft PT Boats