CRNS Embra Redux

CRNS Embra, Calder Republic Battleship laid down 1936

Displacement:
	61,479 t light; 64,993 t standard; 71,423 t normal; 76,568 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(993.71 ft / 966.21 ft) x 113.85 ft x (37.07 / 39.19 ft)
	(302.88 m / 294.50 m) x 34.70 m  x (11.30 / 11.95 m)

Armament:
      9 - 18.11" / 460 mm 45.0 cal guns - 3,328.98lbs / 1,510.00kg shells, 100 per gun
	  Breech loading guns in turret on barbette mounts, 1932 Model
	  2 x 3-gun mounts on centreline, forward deck forward
		1 raised mount - superfiring
	  1 x 3-gun mount on centreline, aft deck aft
      20 - 5.12" / 130 mm 38.0 cal guns - 60.08lbs / 27.25kg shells, 500 per gun
	  Dual purpose guns in deck and hoist mounts, 1932 Model
	  8 x 2-gun mounts on sides, evenly spread
		4 raised mounts
	  2 x 2-gun mounts on centreline ends, evenly spread
		2 double raised mounts
      48 - 1.46" / 37.0 mm 70.0 cal guns - 1.61lbs / 0.73kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1928 Model
	  12 x Quad mounts on sides, evenly spread
		4 raised mounts
      12 - 0.52" / 13.2 mm 90.0 cal guns - 0.09lbs / 0.04kg shells, 2,500 per gun
	  Anti-air guns in deck mounts, 1935 Model
	  12 x Single mounts on sides, evenly spread
      Weight of broadside 31,241 lbs / 14,171 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	14.1" / 357 mm	535.66 ft / 163.27 m	19.69 ft / 6.00 m
	Ends:	6.69" / 170 mm	129.57 ft / 39.49 m	13.12 ft / 4.00 m
	  300.98 ft / 91.74 m Unarmoured ends
	  Main Belt covers 85 % of normal length
	  Main Belt inclined -20.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		2.95" / 75 mm	535.66 ft / 163.27 m	26.25 ft / 8.00 m
	Beam between torpedo bulkheads 84.15 ft / 25.65 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	20.9" / 530 mm	8.66" / 220 mm		13.9" / 354 mm
	2nd:	2.36" / 60 mm	2.36" / 60 mm		2.36" / 60 mm
	3rd:	0.50" / 13 mm	0.50" / 13 mm		      -
	4th:	0.51" / 13 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 8.46" / 215 mm
	Forecastle: 2.95" / 75 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 16.14" / 410 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 4 shafts, 222,939 shp / 166,312 Kw = 32.00 kts
	Range 15,000nm at 15.00 kts
	Bunker at max displacement = 11,575 tons

Complement:
	2,183 - 2,839

Cost:
	£29.792 million / $119.170 million

Distribution of weights at normal displacement:
	Armament: 5,384 tons, 7.5 %
	   - Guns: 5,384 tons, 7.5 %
	Armour: 24,578 tons, 34.4 %
	   - Belts: 6,874 tons, 9.6 %
	   - Torpedo bulkhead: 1,536 tons, 2.2 %
	   - Armament: 4,490 tons, 6.3 %
	   - Armour Deck: 11,080 tons, 15.5 %
	   - Conning Tower: 599 tons, 0.8 %
	Machinery: 6,255 tons, 8.8 %
	Hull, fittings & equipment: 24,874 tons, 34.8 %
	Fuel, ammunition & stores: 9,944 tons, 13.9 %
	Miscellaneous weights: 388 tons, 0.5 %
	   - Hull above water: 23 tons
	   - On freeboard deck: 300 tons
	   - Above deck: 65 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  106,936 lbs / 48,505 Kg = 36.0 x 18.1 " / 460 mm shells or 15.9 torpedoes
	Stability (Unstable if below 1.00): 1.10
	Metacentric height 7.3 ft / 2.2 m
	Roll period: 17.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 57 %
			- Recoil effect (Restricted arc if above 1.00): 0.83
	Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
	Hull has a flush deck,
	  a straight bulbous bow and large transom stern
	Block coefficient (normal/deep): 0.613 / 0.622
	Length to Beam Ratio: 8.49 : 1
	'Natural speed' for length: 35.50 kts
	Power going to wave formation at top speed: 50 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 22.00 degrees
	Stern overhang: 13.45 ft / 4.10 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	22.28 %,  34.78 ft / 10.60 m,  23.62 ft / 7.20 m
	   - Forward deck:	38.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
	   - Aft deck:	17.44 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
	   - Quarter deck:	22.28 %,  23.62 ft / 7.20 m,  24.93 ft / 7.60 m
	   - Average freeboard:		24.76 ft / 7.55 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 85.2 %
		- Above water (accommodation/working, high = better): 175.0 %
	Waterplane Area: 84,893 Square feet or 7,887 Square metres
	Displacement factor (Displacement / loading): 114 %
	Structure weight / hull surface area: 233 lbs/sq ft or 1,137 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.12
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room

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Taper + Mixed Mags/Machinery
Machinery Length: 83.07m, Thickness: 390mm, Height: 4.7m
Magazine Length: 80.2m, Thickness: 400mm, Height: 4.7m
Taper Thickness: 45mm
Taper Height: 1.3m
Average Thickness: 357.01mm
Average Height: 6m

Belt height above waterline is 2.5m if vertical. Angled at 20 degrees requires it to be 2.7m

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Taper Deck
Machinery Length: 83.07m, Thickness: 210mm
Magazine Length: 80.20m, Thickness: 220mm
Average Thickness 214.91mm

Bomb Deck = 40mm Calculated
Armor Deck = 180mm-170mm tapered Calculated + 30mm STS Structural Backplate
Splinter Deck = 15mm STS Structural

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Split Barbette
Height of Armor Deck in order: 2.5m, 2.5m, 2.5m
Height of Weather Deck in order: 7.2m, 7.2m, 7.2m
Superfactor: 0, 1, 0
Number of Guns: 3, 3, 3
Barbette Above: 495mm, 495mm, 495mm
Barbette Bellow: 50mm, 50mm, 50mm
Average Thickness: 353.58mm

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Additional Weight/Equipment

Flag Facilities = 100 tons
x2 Powder Catapults = 40 Tons Above Deck
x4 Floatplanes = 80 tons
X4 Floatplane space hanger = 120 tons
x1 Heavy Cranes = 25 tons Above Deck
x7 Analog Fire Control Computers (FFC) = 10.5 tons Above Water
(1 in each main plot, 1 in each secondary plot, one in each main gunhouse)
x4 Electronic Fire Control Computers (EFFC) = 12 tons (One in each main and secondary plot)

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Ends are actually a 4% of length strake over shafts and steering. Assumes Iowa-style 2-Rudder Steering Abreast Configuration.
Strake tapers from 10"/250mm over the steering area by 2% of strake length to 6"/150mm over shaft at 8% of strake length.
Ends: 170mm
Length: 39.492m
Height: 4m

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