Albatross-Class Light Cruiser [1910] (Mazantsi)

Albatross-Class, Mazantsi Dominion Light Cruiser laid down 1910

Displacement:
	3,219 t light; 3,375 t standard; 3,805 t normal; 4,149 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(444.23 ft / 440.00 ft) x 42.00 ft x (18.00 / 19.06 ft)
	(135.40 m / 134.11 m) x 12.80 m  x (5.49 / 5.81 m)

Armament:
      4 - 6.25" / 159 mm 47.0 cal guns - 126.99lbs / 57.60kg shells, 250 per gun
	  Quick firing guns in deck mounts, 1907 Model
	  2 x Twin mounts on centreline, evenly spread
      4 - 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
	  4 x Single mounts on sides, evenly spread
      4 - 0.50" / 12.7 mm 60.0 cal guns - 0.07lbs / 0.03kg shells, 1,500 per gun
	  Machine guns in deck mounts, 1907 Model
	  4 x Single mounts on sides, evenly spread
      Weight of broadside 563 lbs / 255 kg
      Main Torpedoes
      8 - 21.0" / 533 mm, 20.00 ft / 6.10 m torpedoes - 1.263 t each, 10.103 t total
	In 2 sets of deck mounted side rotating tubes
      2nd Torpedoes
      8 - 21.0" / 533 mm, 20.00 ft / 6.10 m torpedoes - 1.263 t each, 10.103 t total
	below water reloads

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

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.00" / 51 mm	286.00 ft / 87.17 m	13.23 ft / 4.03 m
	Beam between torpedo bulkheads 40.00 ft / 12.19 m

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

   - Box over magazines:
	4.00" / 102 mm
	Forecastle: 4.00" / 102 mm  Quarter deck: 4.00" / 102 mm

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

Machinery:
	Coal and oil fired boilers, steam turbines,
	Direct drive, 4 shafts, 29,407 shp / 21,938 Kw = 28.05 kts
	Range 8,000nm at 10.00 kts
	Bunker at max displacement = 773 tons (20% coal)

Complement:
	241 - 314

Cost:
	£0.314 million / $1.255 million

Distribution of weights at normal displacement:
	Armament: 118 tons, 3.1 %
	   - Guns: 86 tons, 2.2 %
	   - Weapons: 33 tons, 0.9 %
	Armour: 568 tons, 14.9 %
	   - Torpedo bulkhead: 280 tons, 7.4 %
	   - Armament: 21 tons, 0.5 %
	   - Armour Deck: 236 tons, 6.2 %
	   - Conning Tower: 32 tons, 0.8 %
	Machinery: 1,238 tons, 32.5 %
	Hull, fittings & equipment: 1,295 tons, 34.0 %
	Fuel, ammunition & stores: 586 tons, 15.4 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  4,120 lbs / 1,869 Kg = 33.8 x 6.3 " / 159 mm shells or 0.9 torpedoes
	Stability (Unstable if below 1.00): 1.24
	Metacentric height 2.0 ft / 0.6 m
	Roll period: 12.4 seconds
	Steadiness	- As gun platform (Average = 50 %): 100 %
			- Recoil effect (Restricted arc if above 1.00): 0.35
	Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a round stern
	Block coefficient (normal/deep): 0.400 / 0.412
	Length to Beam Ratio: 10.48 : 1
	'Natural speed' for length: 20.98 kts
	Power going to wave formation at top speed: 52 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 10.00 degrees
	Stern overhang: 0.00 ft / 0.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  24.00 ft / 7.32 m,  21.00 ft / 6.40 m
	   - Forward deck:	30.00 %,  21.00 ft / 6.40 m,  18.00 ft / 5.49 m
	   - Aft deck:	35.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
	   - Quarter deck:	15.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
	   - Average freeboard:		19.29 ft / 5.88 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 121.3 %
		- Above water (accommodation/working, high = better): 161.4 %
	Waterplane Area: 11,378 Square feet or 1,057 Square metres
	Displacement factor (Displacement / loading): 115 %
	Structure weight / hull surface area: 66 lbs/sq ft or 320 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.87
		- Longitudinal: 3.73
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather

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Made using Carb's Light Cruiser Calculator; actual speed is 33 knots.