Cheongcha-Class Sloop [1914] (Seondok)

Cheongcha-Class, Seondok County Sloop laid down 1914

Displacement:
	1,654 t light; 1,750 t standard; 1,940 t normal; 2,092 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(296.31 ft / 295.28 ft) x 49.21 ft x (9.84 / 10.40 ft)
	(90.31 m / 90.00 m) x 15.00 m  x (3.00 / 3.17 m)

Armament:
      6 - 4.33" / 110 mm 45.0 cal guns - 40.96lbs / 18.58kg shells, 225 per gun
	  Quick firing guns in deck mounts, 1904 Model
	  2 x Twin mounts on centreline ends, evenly spread
		1 raised mount - superfiring
      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 raised mounts
      2 - 3.44" / 87.5 mm 40.0 cal guns - 19.59lbs / 8.89kg shells, 200 per gun
	  Quick firing guns in deck mounts, 1894 Model
	  1 x Single mount on centreline, aft deck centre
		1 raised mount
	  1 x Single mount on centreline, forward deck centre
		1 double raised mount
      10 - 3.94" / 100 mm 120.0 cal guns - 36.69lbs / 16.64kg shells, 100 per gun
	  Muzzle loading guns in deck mounts, 1911 Model
	  2 x 2 row quad mounts on sides amidships
	  1 x Twin mount on centreline amidships (aft deck)
      Weight of broadside 656 lbs / 298 kg
      Main Torpedoes
      4 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.159 t each, 8.636 t total
	In 4 sets of deck mounted side rotating tubes
      2nd Torpedoes
      4 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.159 t each, 8.636 t total
	below water reloads
      Main DC/AS Mortars
      4 - 220.46 lbs / 100.00 kg Depth Charges + 100 reloads - 10.236 t total
	in Stern depth charge racks

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Ends:	Unarmoured

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		0.98" / 25 mm	236.22 ft / 72.00 m	8.40 ft / 2.56 m
	Beam between torpedo bulkheads 45.93 ft / 14.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	1.97" / 50 mm	0.98" / 25 mm		      -
	3rd:	0.98" / 25 mm	      -			      -

   - Box over machinery & magazines:
	1.57" / 40 mm
	Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, steam turbines,
	Direct drive, 2 shafts, 9,683 shp / 7,224 Kw = 22.00 kts
	Range 5,000nm at 10.00 kts
	Bunker at max displacement = 341 tons (100% coal)

Complement:
	146 - 190

Cost:
	£0.225 million / $0.900 million

Distribution of weights at normal displacement:
	Armament: 225 tons, 11.6 %
	   - Guns: 184 tons, 9.5 %
	   - Weapons: 41 tons, 2.1 %
	Armour: 401 tons, 20.7 %
	   - Torpedo bulkhead: 72 tons, 3.7 %
	   - Armament: 18 tons, 0.9 %
	   - Armour Deck: 304 tons, 15.6 %
	   - Conning Tower: 7 tons, 0.3 %
	Machinery: 410 tons, 21.1 %
	Hull, fittings & equipment: 618 tons, 31.9 %
	Fuel, ammunition & stores: 286 tons, 14.7 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  3,358 lbs / 1,523 Kg = 82.7 x 4.3 " / 110 mm shells or 0.6 torpedoes
	Stability (Unstable if below 1.00): 1.75
	Metacentric height 4.3 ft / 1.3 m
	Roll period: 9.9 seconds
	Steadiness	- As gun platform (Average = 50 %): 51 %
			- Recoil effect (Restricted arc if above 1.00): 0.10
	Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a cruiser stern
	Block coefficient (normal/deep): 0.475 / 0.484
	Length to Beam Ratio: 6.00 : 1
	'Natural speed' for length: 17.18 kts
	Power going to wave formation at top speed: 58 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 4.00 degrees
	Stern overhang: 0.00 ft / 0.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	10.00 %,  14.76 ft / 4.50 m,  13.12 ft / 4.00 m
	   - Forward deck:	30.00 %,  13.12 ft / 4.00 m,  11.48 ft / 3.50 m
	   - Aft deck:	50.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
	   - Quarter deck:	10.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
	   - Average freeboard:		11.96 ft / 3.65 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 107.8 %
		- Above water (accommodation/working, high = better): 132.1 %
	Waterplane Area: 9,468 Square feet or 880 Square metres
	Displacement factor (Displacement / loading): 107 %
	Structure weight / hull surface area: 63 lbs/sq ft or 309 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.94
		- Longitudinal: 1.89
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room