CRNS Narta (1933 Convoy Cruiser)

CRNS Narta, Calder Republic Cruiser laid down 1933

Displacement:
	10,179 t light; 10,715 t standard; 11,902 t normal; 12,852 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(609.82 ft / 590.55 ft) x 59.06 ft x (24.28 / 25.66 ft)
	(185.87 m / 180.00 m) x 18.00 m  x (7.40 / 7.82 m)

Armament:
      9 - 6.50" / 165 mm 55.0 cal guns - 154.32lbs / 70.00kg shells, 200 per gun
	  Quick firing guns in turret on barbette mounts, 1920 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
      10 - 5.12" / 130 mm 38.0 cal guns - 60.08lbs / 27.25kg shells, 400 per gun
	  Dual purpose guns in deck and hoist mounts, 1932 Model
	  4 x 2-gun mounts on side ends, evenly spread
	  1 x 2-gun mount on centreline, aft deck aft
		1 raised mount
      8 - 1.18" / 30.0 mm 65.0 cal guns - 1.10lbs / 0.50kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1928 Model
	  4 x Twin mounts on sides, evenly spread
		4 raised mounts
      8 - 0.52" / 13.2 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1933 Model
	  4 x Twin mounts on sides, evenly spread
      Weight of broadside 1,999 lbs / 907 kg
      Main Torpedoes
      6 - 21.0" / 533 mm, 21.59 ft / 6.58 m torpedoes - 1.447 t each, 8.681 t total
	In 2 sets of deck mounted side rotating tubes
      2nd Torpedoes
      6 - 21.0" / 533 mm, 21.59 ft / 6.58 m torpedoes - 1.447 t each, 8.681 t total
	In 4 sets of deck mounted reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	4.72" / 120 mm	377.95 ft / 115.20 m	12.14 ft / 3.70 m
	Ends:	Unarmoured
	  Main Belt covers 98% of normal length
	  Main Belt inclined 8.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		3.54" / 90 mm	377.95 ft / 115.20 m	20.67 ft / 6.30 m
	Beam between torpedo bulkheads 52.49 ft / 16.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	9.45" / 240 mm	7.87" / 200 mm		9.45" / 240 mm
	2nd:	1.18" / 30 mm	1.18" / 30 mm		1.18" / 30 mm
	3rd:	0.59" / 15 mm	      -			      -
	4th:	0.59" / 15 mm	      -			      -

   - Armoured deck - single deck:
	For and Aft decks: 2.36" / 60 mm

   - Conning towers: Forward 9.45" / 240 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 85,968 shp / 64,132 Kw = 32.50 kts
	Range 7,800nm at 15.00 kts
	Bunker at max displacement = 2,136 tons

Complement:
	569 - 740

Cost:
	£4.314 million / $17.255 million

Distribution of weights at normal displacement:
	Armament: 647 tons, 5.4%
	   - Guns: 619 tons, 5.2%
	   - Weapons: 28 tons, 0.2%
	Armour: 3,687 tons, 31.0%
	   - Belts: 893 tons, 7.5%
	   - Torpedo bulkhead: 1,024 tons, 8.6%
	   - Armament: 821 tons, 6.9%
	   - Armour Deck: 843 tons, 7.1%
	   - Conning Tower: 106 tons, 0.9%
	Machinery: 2,505 tons, 21.0%
	Hull, fittings & equipment: 3,165 tons, 26.6%
	Fuel, ammunition & stores: 1,724 tons, 14.5%
	Miscellaneous weights: 190 tons, 1.6%
	   - On freeboard deck: 50 tons
	   - Above deck: 140 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  15,118 lbs / 6,858 Kg = 110.3 x 6.5 " / 165 mm shells or 2.3 torpedoes
	Stability (Unstable if below 1.00): 1.01
	Metacentric height 2.3 ft / 0.7 m
	Roll period: 16.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 58 %
			- Recoil effect (Restricted arc if above 1.00): 0.64
	Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and transom stern (0.62 of beam)
	Block coefficient (normal/deep): 0.492 / 0.503
	Length to Beam Ratio: 10.00 : 1
	'Natural speed' for length: 27.94 kts
	Power going to wave formation at top speed: 57 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 22.00 degrees
	Stern overhang: 7.87 ft / 2.40 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.50%,  28.22 ft / 8.60 m,  21.00 ft / 6.40 m
	   - Forward deck:	32.00%,  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,  21.65 ft / 6.60 m
	   - Average freeboard:		21.28 ft / 6.49 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 96.7%
		- Above water (accommodation/working, high = better): 158.4%
	Waterplane Area: 23,978 Square feet or 2,228 Square metres
	Displacement factor (Displacement / loading): 110%
	Structure weight / hull surface area: 110 lbs/sq ft or 538 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.93
		- Longitudinal: 1.81
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room

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Misc Weight:

x2 Rotating Gunpowder Catapults: 40 tons Above Deck.
x2 Floatplanes: 40 tons Above Deck.
x2 Space Floatplane Hanger: 60 tons Above Deck.
x2 Heavy Cranes: 50 tons On Deck.