Spirit-Class Armored Cruiser [1906] (Mazantsi)

Spirit-Class, Mazantsi Dominion Armored Cruiser laid down 1906

Displacement:
	12,452 t light; 12,950 t standard; 14,881 t normal; 16,426 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(580.00 ft / 580.00 ft) x 70.00 ft x (25.00 / 26.98 ft)
	(176.78 m / 176.78 m) x 21.34 m  x (7.62 / 8.22 m)

Armament:
      10 - 7.50" / 191 mm 50.0 cal guns - 225.00lbs / 102.06kg shells, 120 per gun
	  Breech loading guns in turret on barbette mounts, 1905 Model
	  3 x Twin mounts on centreline ends, majority forward
	  2 x Single mounts on sides amidships
      10 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1904 Model
	  6 x Single mounts on centreline ends, evenly spread
		6 raised mounts
	  4 x Single mounts on sides, evenly spread
		4 raised mounts
      12 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1904 Model
	  12 x Single mounts on sides, evenly spread
      Weight of broadside 2,550 lbs / 1,156 kg
      Main Torpedoes
      4 - 20.0" / 508 mm, 20.00 ft / 6.10 m torpedoes - 1.096 t each, 4.383 t total
	In 4 sets of deck mounted carriage/fixed tubes
      2nd Torpedoes
      8 - 20.0" / 508 mm, 20.00 ft / 6.10 m torpedoes - 1.096 t each, 8.765 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.50" / 191 mm	435.58 ft / 132.76 m	10.04 ft / 3.06 m
	Ends:	4.00" / 102 mm	144.40 ft / 44.01 m	10.04 ft / 3.06 m
	Upper:	4.00" / 102 mm	435.58 ft / 132.76 m	8.00 ft / 2.44 m
	  Main Belt covers 116 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.50" / 64 mm	435.58 ft / 132.76 m	22.29 ft / 6.79 m
	Beam between torpedo bulkheads 56.00 ft / 17.07 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	6.00" / 152 mm	4.00" / 102 mm		4.00" / 102 mm

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

   - Conning towers: Forward 12.00" / 305 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, steam turbines,
	Direct drive, 2 shafts, 48,959 shp / 36,523 Kw = 26.00 kts
	Range 10,000nm at 10.00 kts
	Bunker at max displacement = 3,476 tons (100% coal)

Complement:
	673 - 875

Cost:
	£1.173 million / $4.694 million

Distribution of weights at normal displacement:
	Armament: 687 tons, 4.6 %
	   - Guns: 671 tons, 4.5 %
	   - Weapons: 16 tons, 0.1 %
	Armour: 4,719 tons, 31.7 %
	   - Belts: 2,121 tons, 14.3 %
	   - Torpedo bulkhead: 898 tons, 6.0 %
	   - Armament: 522 tons, 3.5 %
	   - Armour Deck: 1,022 tons, 6.9 %
	   - Conning Tower: 156 tons, 1.1 %
	Machinery: 3,497 tons, 23.5 %
	Hull, fittings & equipment: 3,449 tons, 23.2 %
	Fuel, ammunition & stores: 2,429 tons, 16.3 %
	Miscellaneous weights: 100 tons, 0.7 %
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  18,136 lbs / 8,226 Kg = 86.0 x 7.5 " / 191 mm shells or 3.3 torpedoes
	Stability (Unstable if below 1.00): 1.29
	Metacentric height 4.6 ft / 1.4 m
	Roll period: 13.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 73 %
			- Recoil effect (Restricted arc if above 1.00): 0.32
	Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a cruiser stern
	Block coefficient (normal/deep): 0.513 / 0.525
	Length to Beam Ratio: 8.29 : 1
	'Natural speed' for length: 24.08 kts
	Power going to wave formation at top speed: 49 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 0.00 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 %,  25.00 ft / 7.62 m,  22.00 ft / 6.71 m
	   - Forward deck:	30.00 %,  22.00 ft / 6.71 m,  18.00 ft / 5.49 m
	   - Aft deck:	45.10 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
	   - Quarter deck:	14.90 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
	   - Average freeboard:		19.12 ft / 5.83 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 115.4 %
		- Above water (accommodation/working, high = better): 145.0 %
	Waterplane Area: 27,378 Square feet or 2,544 Square metres
	Displacement factor (Displacement / loading): 105 %
	Structure weight / hull surface area: 111 lbs/sq ft or 543 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.96
		- Longitudinal: 1.34
		- Overall: 1.00
	Cramped 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