Bombardier-Class Scout Cruiser [1912] (Citadon)

Bombardier-Class, Citadon Empire Scout Cruiser laid down 1912

Displacement:
	4,554 t light; 4,750 t standard; 5,125 t normal; 5,425 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(421.92 ft / 420.00 ft) x 48.00 ft x (18.00 / 18.79 ft)
	(128.60 m / 128.02 m) x 14.63 m  x (5.49 / 5.73 m)

Armament:
      4 - 7.00" / 178 mm 50.0 cal guns - 181.55lbs / 82.35kg shells, 120 per gun
	  Breech loading guns in deck mounts, 1900 Model
	  4 x Twin mounts on centreline, evenly spread
      4 - 5.00" / 127 mm 50.0 cal guns - 66.16lbs / 30.01kg shells, 200 per gun
	  Quick firing guns in deck mounts, 1910 Model
	  4 x Single mounts on sides, evenly spread
      8 - 2.75" / 69.9 mm 55.0 cal guns - 11.22lbs / 5.09kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1895 Model
	  8 x Single mounts on sides, evenly spread
		8 raised mounts
      4 - 0.50" / 12.7 mm 70.0 cal guns - 0.07lbs / 0.03kg shells, 2,500 per gun
	  Machine guns in deck mounts, 1911 Model
	  4 x Single mounts on sides, evenly spread
		4 double raised mounts
      Weight of broadside 1,081 lbs / 490 kg
      Main Torpedoes
      8 - 21.0" / 533 mm, 24.00 ft / 7.32 m torpedoes - 1.507 t each, 12.060 t total
	In 4 sets of deck mounted side rotating tubes
      2nd Torpedoes
      8 - 21.0" / 533 mm, 24.00 ft / 7.32 m torpedoes - 1.507 t each, 12.060 t total
	below water reloads
      Mines
      4 - 400.00 lbs / 181.44 kg mines + 80 reloads - 15.000 t total
	in Above water - Stern racks/rails

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	4.25" / 108 mm	300.00 ft / 91.44 m	8.31 ft / 2.53 m
	Ends:	2.00" / 51 mm	120.00 ft / 36.58 m	8.31 ft / 2.53 m
	Upper:	3.00" / 76 mm	300.00 ft / 91.44 m	8.00 ft / 2.44 m
	  Main Belt covers 110 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.00" / 51 mm	300.00 ft / 91.44 m	16.52 ft / 5.04 m
	Beam between torpedo bulkheads 40.00 ft / 12.19 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	3.00" / 76 mm	2.00" / 51 mm		      -
	2nd:	3.00" / 76 mm	2.00" / 51 mm		      -
	3rd:	1.00" / 25 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 2.00" / 51 mm
	Forecastle: 1.50" / 38 mm  Quarter deck: 1.50" / 38 mm

   - Conning towers: Forward 6.00" / 152 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, steam turbines,
	Direct drive, 2 shafts, 28,218 shp / 21,050 Kw = 26.00 kts
	Range 5,000nm at 10.00 kts
	Bunker at max displacement = 676 tons (100% coal)

Complement:
	302 - 393

Cost:
	£0.390 million / $1.561 million

Distribution of weights at normal displacement:
	Armament: 231 tons, 4.5 %
	   - Guns: 173 tons, 3.4 %
	   - Weapons: 58 tons, 1.1 %
	Armour: 1,832 tons, 35.7 %
	   - Belts: 800 tons, 15.6 %
	   - Torpedo bulkhead: 367 tons, 7.2 %
	   - Armament: 151 tons, 2.9 %
	   - Armour Deck: 475 tons, 9.3 %
	   - Conning Tower: 38 tons, 0.7 %
	Machinery: 1,238 tons, 24.1 %
	Hull, fittings & equipment: 1,254 tons, 24.5 %
	Fuel, ammunition & stores: 571 tons, 11.1 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  7,242 lbs / 3,285 Kg = 42.2 x 7.0 " / 178 mm shells or 1.3 torpedoes
	Stability (Unstable if below 1.00): 1.32
	Metacentric height 2.7 ft / 0.8 m
	Roll period: 12.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 72 %
			- Recoil effect (Restricted arc if above 1.00): 0.28
	Seaboat quality  (Average = 1.00): 1.44

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a cruiser stern
	Block coefficient (normal/deep): 0.494 / 0.501
	Length to Beam Ratio: 8.75 : 1
	'Natural speed' for length: 20.49 kts
	Power going to wave formation at top speed: 56 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 5.00 degrees
	Stern overhang: -2.00 ft / -0.61 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  22.00 ft / 6.71 m,  19.00 ft / 5.79 m
	   - Forward deck:	30.00 %,  19.00 ft / 5.79 m,  16.00 ft / 4.88 m
	   - Aft deck:	35.00 %,  16.00 ft / 4.88 m,  16.00 ft / 4.88 m
	   - Quarter deck:	15.00 %,  16.00 ft / 4.88 m,  16.00 ft / 4.88 m
	   - Average freeboard:		17.29 ft / 5.27 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 109.5 %
		- Above water (accommodation/working, high = better): 135.3 %
	Waterplane Area: 13,363 Square feet or 1,241 Square metres
	Displacement factor (Displacement / loading): 106 %
	Structure weight / hull surface area: 74 lbs/sq ft or 364 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.93
		- Longitudinal: 2.00
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Good seaboat, rides out heavy weather easily

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Made using Carb's Light Cruiser calculator; actual speed is 28.70 knots.