CRNS Impiger (1915) TE Battleship

CRNS Impiger, Calder Republic Battleship laid down 1915

Displacement:
	35,714 t light; 38,056 t standard; 40,523 t normal; 42,496 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(730.68 ft / 719.16 ft) x 102.36 ft x (34.78 / 36.12 ft)
	(222.71 m / 219.20 m) x 31.20 m  x (10.60 / 11.01 m)

Armament:
      10 - 14.96" / 380 mm 42.0 cal guns - 1,962.11lbs / 890.00kg shells, 120 per gun
	  Breech loading guns in turret on barbette mounts, 1909 Model
	  2 x 3-gun mounts on centreline ends, evenly spread
	  2 x 2-gun mounts on centreline ends, evenly spread
		2 raised mounts
      14 - 5.12" / 130 mm 50.0 cal guns - 60.01lbs / 27.22kg shells, 400 per gun
	  Quick firing guns in casemate mounts, 1907 Model
	  14 x Single mounts on sides, evenly spread
		8 hull mounts in casemates- Limited use in heavy seas
      8 - 2.95" / 75.0 mm 50.0 cal guns - 13.67lbs / 6.20kg shells, 600 per gun
	  Anti-air guns in deck mounts, 1913 Model
	  6 x Single mounts on sides, evenly spread
      Weight of broadside 20,571 lbs / 9,331 kg
      Main Torpedoes
      2 - 21.0" / 533 mm, 23.10 ft / 7.04 m torpedoes - 1.466 t each, 2.932 t total
	submerged side tubes
      2nd Torpedoes
      2 - 21.0" / 533 mm, 23.10 ft / 7.04 m torpedoes - 1.466 t each, 2.932 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	13.0" / 330 mm	443.01 ft / 135.03 m	12.47 ft / 3.80 m
	Ends:	1.97" / 50 mm	276.15 ft / 84.17 m	12.47 ft / 3.80 m
	Upper:	2.95" / 75 mm	443.01 ft / 135.03 m	8.01 ft / 2.44 m
	  Main Belt covers 95 % of normal length
	  Main Belt inclined -5.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		2.95" / 75 mm	443.01 ft / 135.03 m	32.02 ft / 9.76 m
	Beam between torpedo bulkheads 66.93 ft / 20.40 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	15.0" / 380 mm	9.06" / 230 mm		12.2" / 310 mm
	2nd:	3.94" / 100 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 6.30" / 160 mm
	Forecastle: 2.95" / 75 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 14.96" / 380 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 4 shafts, 87,146 shp / 65,011 Kw = 26.00 kts
	Range 10,000nm at 12.00 kts
	Bunker at max displacement = 4,440 tons

Complement:
	1,427 - 1,856

Cost:
	£4.630 million / $18.522 million

Distribution of weights at normal displacement:
	Armament: 3,300 tons, 8.1 %
	   - Guns: 3,291 tons, 8.1 %
	   - Weapons: 10 tons, 0.0 %
	Armour: 14,760 tons, 36.4 %
	   - Belts: 3,821 tons, 9.4 %
	   - Torpedo bulkhead: 1,550 tons, 3.8 %
	   - Armament: 3,653 tons, 9.0 %
	   - Armour Deck: 5,357 tons, 13.2 %
	   - Conning Tower: 380 tons, 0.9 %
	Machinery: 3,301 tons, 8.1 %
	Hull, fittings & equipment: 14,230 tons, 35.1 %
	Fuel, ammunition & stores: 4,809 tons, 11.9 %
	Miscellaneous weights: 123 tons, 0.3 %
	   - Hull above water: 23 tons
	   - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  61,794 lbs / 28,029 Kg = 36.9 x 15.0 " / 380 mm shells or 9.7 torpedoes
	Stability (Unstable if below 1.00): 1.09
	Metacentric height 6.2 ft / 1.9 m
	Roll period: 17.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 65 %
			- Recoil effect (Restricted arc if above 1.00): 0.90
	Seaboat quality  (Average = 1.00): 1.30

Hull form characteristics:
	Hull has rise forward of midbreak,
	  a straight bulbous bow and a cruiser stern
	Block coefficient (normal/deep): 0.554 / 0.559
	Length to Beam Ratio: 7.03 : 1
	'Natural speed' for length: 26.82 kts
	Power going to wave formation at top speed: 48 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 26.00 degrees
	Stern overhang: -4.92 ft / -1.50 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	19.20 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
	   - Forward deck:	42.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
	   - Aft deck:	19.60 %,  19.03 ft / 5.80 m,  19.03 ft / 5.80 m
	   - Quarter deck:	19.20 %,  19.03 ft / 5.80 m,  19.03 ft / 5.80 m
	   - Average freeboard:		21.84 ft / 6.66 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 94.5 %
		- Above water (accommodation/working, high = better): 152.5 %
	Waterplane Area: 51,568 Square feet or 4,791 Square metres
	Displacement factor (Displacement / loading): 114 %
	Structure weight / hull surface area: 212 lbs/sq ft or 1,037 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.53
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily

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Misc Weight:
Flag Facilities = 100 tons.