Myeongdang-Class Battleship [1911] (Seondok)

Myeongdang-Class, Seondok County Battleship laid down 1911

Displacement:
	27,387 t light; 29,500 t standard; 31,401 t normal; 32,922 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(672.57 ft / 656.17 ft) x 98.43 ft x (28.71 / 29.84 ft)
	(205.00 m / 200.00 m) x 30.00 m  x (8.75 / 9.10 m)

Armament:
      12 - 13.78" / 350 mm 45.0 cal guns - 1,319.36lbs / 598.45kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1911 Model
	  6 x Twin mounts on centreline, evenly spread
		2 raised mounts
      24 - 4.33" / 110 mm 45.0 cal guns - 40.96lbs / 18.58kg shells, 300 per gun
	  Quick firing guns in casemate mounts, 1904 Model
	  24 x Single mounts on sides, evenly spread
		24 hull mounts in casemates- Limited use in heavy seas
      10 - 0.98" / 25.0 mm 55.0 cal guns - 0.51lbs / 0.23kg shells, 400 per gun
	  Quick firing guns in deck mounts, 1901 Model
	  3 x Twin mounts on centreline, evenly spread
		3 raised mounts
	  2 x Twin mounts on centreline, evenly spread
		2 double raised mounts
      Weight of broadside 16,820 lbs / 7,630 kg
      Main Torpedoes
      8 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.147 t each, 17.177 t total
	In 4 sets of deck mounted side rotating tubes
      2nd Torpedoes
      16 - 21.7" / 550 mm, 32.81 ft / 10.00 m torpedoes - 2.147 t each, 34.353 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.6" / 320 mm	426.51 ft / 130.00 m	11.91 ft / 3.63 m
	Ends:	3.94" / 100 mm	229.66 ft / 70.00 m	11.91 ft / 3.63 m
	Upper:	5.91" / 150 mm	426.51 ft / 130.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		3.94" / 100 mm	459.32 ft / 140.00 m	26.97 ft / 8.22 m
	Beam between torpedo bulkheads 65.62 ft / 20.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	14.2" / 360 mm	9.84" / 250 mm		12.6" / 320 mm
	2nd:	3.94" / 100 mm	1.97" / 50 mm		3.94" / 100 mm
	3rd:	1.97" / 50 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 4.33" / 110 mm
	Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 14.96" / 380 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Direct drive, 4 shafts, 45,197 shp / 33,717 Kw = 22.50 kts
	Range 7,500nm at 12.00 kts
	Bunker at max displacement = 3,422 tons

Complement:
	1,179 - 1,533

Cost:
	£2.740 million / $10.959 million

Distribution of weights at normal displacement:
	Armament: 2,955 tons, 9.4 %
	   - Guns: 2,877 tons, 9.2 %
	   - Weapons: 77 tons, 0.2 %
	Armour: 13,273 tons, 42.3 %
	   - Belts: 4,051 tons, 12.9 %
	   - Torpedo bulkhead: 1,804 tons, 5.7 %
	   - Armament: 3,692 tons, 11.8 %
	   - Armour Deck: 3,404 tons, 10.8 %
	   - Conning Tower: 321 tons, 1.0 %
	Machinery: 1,834 tons, 5.8 %
	Hull, fittings & equipment: 9,226 tons, 29.4 %
	Fuel, ammunition & stores: 4,014 tons, 12.8 %
	Miscellaneous weights: 100 tons, 0.3 %
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  44,776 lbs / 20,310 Kg = 34.2 x 13.8 " / 350 mm shells or 5.3 torpedoes
	Stability (Unstable if below 1.00): 1.14
	Metacentric height 6.2 ft / 1.9 m
	Roll period: 16.6 seconds
	Steadiness	- As gun platform (Average = 50 %): 64 %
			- Recoil effect (Restricted arc if above 1.00): 0.67
	Seaboat quality  (Average = 1.00): 1.28

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.593 / 0.598
	Length to Beam Ratio: 6.67 : 1
	'Natural speed' for length: 25.62 kts
	Power going to wave formation at top speed: 43 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -4.00 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  25.43 ft / 7.75 m,  22.15 ft / 6.75 m
	   - Forward deck:	30.00 %,  22.15 ft / 6.75 m,  16.40 ft / 5.00 m
	   - Aft deck:	35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
	   - Quarter deck:	15.00 %,  16.40 ft / 5.00 m,  17.39 ft / 5.30 m
	   - Average freeboard:		18.75 ft / 5.72 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 98.2 %
		- Above water (accommodation/working, high = better): 131.7 %
	Waterplane Area: 46,918 Square feet or 4,359 Square metres
	Displacement factor (Displacement / loading): 99 %
	Structure weight / hull surface area: 191 lbs/sq ft or 932 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.18
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily