Cheolsim-Class Light Cruiser [1914] (Seondok)

Cheolsim-Class, Seondok County Light Cruiser laid down 1914

Displacement:
	5,482 t light; 5,725 t standard; 6,012 t normal; 6,241 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(479.00 ft / 475.72 ft) x 59.06 ft x (18.04 / 18.50 ft)
	(146.00 m / 145.00 m) x 18.00 m  x (5.50 / 5.64 m)

Armament:
      8 - 5.71" / 145 mm 45.0 cal guns - 95.00lbs / 43.09kg shells, 225 per gun
	  Quick firing guns in deck and hoist mounts, 1914 Model
	  4 x Twin mounts on centreline ends, evenly spread
		2 raised mounts - superfiring
      8 - 3.44" / 87.5 mm 40.0 cal guns - 19.59lbs / 8.89kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1894 Model
	  8 x Single mounts on sides, evenly spread
      8 - 0.98" / 25.0 mm 55.0 cal guns - 0.51lbs / 0.23kg shells, 1,000 per gun
	  Quick firing guns in deck mounts, 1901 Model
	  8 x Single mounts on sides, evenly spread
		8 double raised mounts
      Weight of broadside 921 lbs / 418 kg
      Main Torpedoes
      8 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.159 t each, 17.273 t total
	In 2 sets of deck mounted side rotating tubes
      2nd Torpedoes
      8 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.159 t each, 17.273 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	2.95" / 75 mm	321.10 ft / 97.87 m	9.22 ft / 2.81 m
	Ends:	1.18" / 30 mm	154.59 ft / 47.12 m	9.22 ft / 2.81 m
	Upper:	1.18" / 30 mm	321.10 ft / 97.87 m	8.01 ft / 2.44 m
	  Main Belt covers 104 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		0.98" / 25 mm	321.10 ft / 97.87 m	13.65 ft / 4.16 m
	Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	4.72" / 120 mm	2.95" / 75 mm		2.95" / 75 mm
	2nd:	1.97" / 50 mm	0.98" / 25 mm		      -
	3rd:	0.49" / 13 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 2.36" / 60 mm
	Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Direct drive, 2 shafts, 38,800 shp / 28,945 Kw = 28.00 kts
	Range 5,000nm at 10.00 kts
	Bunker at max displacement = 516 tons

Complement:
	340 - 443

Cost:
	£0.610 million / $2.441 million

Distribution of weights at normal displacement:
	Armament: 243 tons, 4.0 %
	   - Guns: 187 tons, 3.1 %
	   - Weapons: 56 tons, 0.9 %
	Armour: 1,606 tons, 26.7 %
	   - Belts: 550 tons, 9.2 %
	   - Torpedo bulkhead: 160 tons, 2.7 %
	   - Armament: 164 tons, 2.7 %
	   - Armour Deck: 704 tons, 11.7 %
	   - Conning Tower: 28 tons, 0.5 %
	Machinery: 1,495 tons, 24.9 %
	Hull, fittings & equipment: 2,137 tons, 35.6 %
	Fuel, ammunition & stores: 530 tons, 8.8 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  8,343 lbs / 3,784 Kg = 89.7 x 5.7 " / 145 mm shells or 1.0 torpedoes
	Stability (Unstable if below 1.00): 1.33
	Metacentric height 3.8 ft / 1.1 m
	Roll period: 12.8 seconds
	Steadiness	- As gun platform (Average = 50 %): 60 %
			- Recoil effect (Restricted arc if above 1.00): 0.21
	Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.415 / 0.420
	Length to Beam Ratio: 8.06 : 1
	'Natural speed' for length: 21.81 kts
	Power going to wave formation at top speed: 54 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -8.00 degrees
	Stern overhang: -3.28 ft / -1.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	17.50 %,  21.33 ft / 6.50 m,  18.86 ft / 5.75 m
	   - Forward deck:	30.00 %,  18.86 ft / 5.75 m,  14.76 ft / 4.50 m
	   - Aft deck:	37.50 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
	   - Quarter deck:	15.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
	   - Average freeboard:		16.27 ft / 4.96 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 101.1 %
		- Above water (accommodation/working, high = better): 144.1 %
	Waterplane Area: 17,456 Square feet or 1,622 Square metres
	Displacement factor (Displacement / loading): 113 %
	Structure weight / hull surface area: 90 lbs/sq ft or 442 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.96
		- Longitudinal: 1.56
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily

===========================
Made using Carb's Light Cruiser Calculator; actual speed is 32.88 knots.