1924 Light Cruiser Study Design B [1924] (Kotynia)

1924 Light Cruiser Design, Kotynia Light Cruiser laid down 1922 (Engine 1924)

Displacement:
	7,573 t light; 8,029 t standard; 9,100 t normal; 9,956 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(611.00 ft / 606.96 ft) x 59.06 ft x (18.86 / 20.10 ft)
	(186.23 m / 185.00 m) x 18.00 m  x (5.75 / 6.13 m)

Armament:
      12 - 6.00" / 152 mm 50.0 cal guns - 124.01lbs / 56.25kg shells, 200 per gun
	  Quick firing guns in deck and hoist mounts, 1920 Model
	  4 x Triple mounts on centreline, evenly spread
		2 raised mounts
      8 - 4.72" / 120 mm 45.0 cal guns - 53.18lbs / 24.12kg shells, 375 per gun
	  Quick firing guns in deck mounts, 1906 Model
	  4 x Twin mounts on sides, evenly spread
		4 raised mounts
      8 - 3.00" / 76.2 mm 50.0 cal guns - 14.29lbs / 6.48kg shells, 300 per gun
	  Dual purpose guns in deck mounts, 1899 Model
	  8 x Single mounts on sides, evenly spread
		8 double raised mounts
      8 - 0.50" / 12.7 mm 85.0 cal guns - 0.07lbs / 0.03kg shells, 1,300 per gun
	  Anti-air guns in deck mounts, 1923 Model
	  8 x Single mounts on sides, evenly spread
		8 double raised mounts
      Weight of broadside 2,028 lbs / 920 kg
      Main Torpedoes
      12 - 21.0" / 533 mm, 6.25 ft / 1.91 m torpedoes - 0.498 t each, 5.972 t total
	In 4 sets of deck mounted side rotating tubes
      2nd Torpedoes
      12 - 21.0" / 533 mm, 6.25 ft / 1.91 m torpedoes - 0.498 t each, 5.972 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	5.00" / 127 mm	393.70 ft / 120.00 m	9.22 ft / 2.81 m
	Ends:	Unarmoured
	  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	393.70 ft / 120.00 m	16.01 ft / 4.88 m
	Beam between torpedo bulkheads 45.93 ft / 14.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	5.91" / 150 mm	3.94" / 100 mm		3.94" / 100 mm
	2nd:	1.97" / 50 mm	0.98" / 25 mm		      -

   - Armoured deck - multiple decks:
	For and Aft decks: 2.01" / 51 mm
	Forecastle: 2.01" / 51 mm  Quarter deck: 2.01" / 51 mm

   - Conning towers: Forward 5.91" / 150 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 49,097 shp / 36,626 Kw = 29.40 kts
	Range 6,700nm at 16.00 kts
	Bunker at max displacement = 1,928 tons

Complement:
	465 - 605

Cost:
	£1.807 million / $7.227 million

Distribution of weights at normal displacement:
	Armament: 433 tons, 4.8 %
	   - Guns: 413 tons, 4.5 %
	   - Weapons: 19 tons, 0.2 %
	Armour: 2,587 tons, 28.4 %
	   - Belts: 743 tons, 8.2 %
	   - Torpedo bulkhead: 689 tons, 7.6 %
	   - Armament: 195 tons, 2.1 %
	   - Armour Deck: 905 tons, 9.9 %
	   - Conning Tower: 55 tons, 0.6 %
	Machinery: 1,617 tons, 17.8 %
	Hull, fittings & equipment: 2,826 tons, 31.1 %
	Fuel, ammunition & stores: 1,526 tons, 16.8 %
	Miscellaneous weights: 110 tons, 1.2 %
	   - On freeboard deck: 50 tons
	   - Above deck: 60 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  14,681 lbs / 6,659 Kg = 135.9 x 6.0 " / 152 mm shells or 7.1 torpedoes
	Stability (Unstable if below 1.00): 1.22
	Metacentric height 3.3 ft / 1.0 m
	Roll period: 13.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 65 %
			- Recoil effect (Restricted arc if above 1.00): 0.51
	Seaboat quality  (Average = 1.00): 1.31

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and large transom stern
	Block coefficient (normal/deep): 0.471 / 0.484
	Length to Beam Ratio: 10.28 : 1
	'Natural speed' for length: 28.15 kts
	Power going to wave formation at top speed: 49 %
	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 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
	   - Forward deck:	30.00 %,  19.69 ft / 6.00 m,  15.58 ft / 4.75 m
	   - Aft deck:	30.00 %,  15.58 ft / 4.75 m,  15.58 ft / 4.75 m
	   - Quarter deck:	20.00 %,  15.58 ft / 4.75 m,  15.58 ft / 4.75 m
	   - Average freeboard:		17.28 ft / 5.27 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 99.6 %
		- Above water (accommodation/working, high = better): 164.0 %
	Waterplane Area: 24,186 Square feet or 2,247 Square metres
	Displacement factor (Displacement / loading): 120 %
	Structure weight / hull surface area: 102 lbs/sq ft or 500 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.99
		- Longitudinal: 1.12
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily

Made Using Light Engine Calculator; Actual Speed = 35 Knots (35*.84=29.4)

Additional Weights:
=============
(1) Air-Compressed Catapult (25 Tons)
(1) Heavy Cranes (25 Tons)
(2) Floatplanes on Turrets (2*30=60 Tons)