CRNS Praerup Heavy Cruiser 1926

CRNS Praerup, Calder Republic Heavy Cruiser laid down 1926

Displacement:
	12,690 t light; 13,208 t standard; 14,150 t normal; 14,903 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(662.85 ft / 656.17 ft) x 67.26 ft x (22.31 / 23.20 ft)
	(202.04 m / 200.00 m) x 20.50 m  x (6.80 / 7.07 m)

Armament:
      8 - 8.27" / 210 mm 50.0 cal guns - 330.69lbs / 150.00kg shells, 135 per gun
	  Breech loading guns in turret on barbette mounts, 1924 Model
	  2 x 2-gun mounts on centreline, forward deck forward
		1 raised mount - superfiring
	  2 x 2-gun mounts on centreline, aft deck aft
		1 raised mount aft - superfiring
      8 - 2.95" / 75.0 mm 50.0 cal guns - 13.62lbs / 6.18kg shells, 600 per gun
	  Anti-air guns in deck mounts, 1921 Model
	  8 x Single mounts on sides, evenly spread
      8 - 0.50" / 12.7 mm 50.0 cal guns - 0.07lbs / 0.03kg shells, 800 per gun
	  Machine guns in deck mounts, 1921 Model
	  2 x Quad mounts on sides amidships
      Weight of broadside 2,755 lbs / 1,250 kg
      Main Torpedoes
      2 - 21.0" / 533 mm, 23.10 ft / 7.04 m torpedoes - 1.510 t each, 3.020 t total
	In 4 sets of deck mounted side rotating tubes

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	6.10" / 155 mm	439.63 ft / 134.00 m	9.84 ft / 3.00 m
	Ends:	Unarmoured
	Upper:	3.15" / 80 mm	439.63 ft / 134.00 m	8.01 ft / 2.44 m
	  Main Belt covers 103 % of normal length
	  Main Belt inclined -5.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	439.63 ft / 134.00 m	19.69 ft / 6.00 m
	Beam between torpedo bulkheads 54.13 ft / 16.50 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	5.98" / 152 mm	3.94" / 100 mm		5.98" / 152 mm
	2nd:	0.98" / 25 mm	      -			      -

   - Armoured deck - single deck:
	For and Aft decks: 3.15" / 80 mm
	Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 5.98" / 152 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 88,851 shp / 66,283 Kw = 31.00 kts
	Range 13,000nm at 10.00 kts
	Bunker at max displacement = 1,695 tons

Complement:
	648 - 843

Cost:
	£3.793 million / $15.170 million

Distribution of weights at normal displacement:
	Armament: 774 tons, 5.5 %
	   - Guns: 768 tons, 5.4 %
	   - Weapons: 6 tons, 0.0 %
	Armour: 4,838 tons, 34.2 %
	   - Belts: 1,534 tons, 10.8 %
	   - Torpedo bulkhead: 945 tons, 6.7 %
	   - Armament: 666 tons, 4.7 %
	   - Armour Deck: 1,618 tons, 11.4 %
	   - Conning Tower: 75 tons, 0.5 %
	Machinery: 2,844 tons, 20.1 %
	Hull, fittings & equipment: 4,123 tons, 29.1 %
	Fuel, ammunition & stores: 1,459 tons, 10.3 %
	Miscellaneous weights: 110 tons, 0.8 %
	   - Above deck: 110 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  19,859 lbs / 9,008 Kg = 70.3 x 8.3 " / 210 mm shells or 2.8 torpedoes
	Stability (Unstable if below 1.00): 1.10
	Metacentric height 3.3 ft / 1.0 m
	Roll period: 15.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 63 %
			- Recoil effect (Restricted arc if above 1.00): 0.56
	Seaboat quality  (Average = 1.00): 1.26

Hull form characteristics:
	Hull has a flush deck,
	  a straight bulbous bow and a cruiser stern
	Block coefficient (normal/deep): 0.503 / 0.509
	Length to Beam Ratio: 9.76 : 1
	'Natural speed' for length: 25.62 kts
	Power going to wave formation at top speed: 52 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 15.00 degrees
	Stern overhang: -1.64 ft / -0.50 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	16.50 %,  24.93 ft / 7.60 m,  21.00 ft / 6.40 m
	   - Forward deck:	36.00 %,  21.00 ft / 6.40 m,  20.34 ft / 6.20 m
	   - Aft deck:	31.00 %,  20.34 ft / 6.20 m,  20.34 ft / 6.20 m
	   - Quarter deck:	16.50 %,  20.34 ft / 6.20 m,  21.00 ft / 6.40 m
	   - Average freeboard:		20.88 ft / 6.36 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 102.7 %
		- Above water (accommodation/working, high = better): 175.3 %
	Waterplane Area: 29,485 Square feet or 2,739 Square metres
	Displacement factor (Displacement / loading): 108 %
	Structure weight / hull surface area: 119 lbs/sq ft or 582 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.97
		- Longitudinal: 1.27
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily

40 tons = x2 Floatplates
20 tons = gunpowder catapult
50 tons = x2 heavy crane