1938 MN Henri IV

Henri IV, La France Le Petit Croiseur de Battaile laid down 1938

Displacement:
	9,349 t light; 10,000 t standard; 13,072 t normal; 15,530 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(557.74 ft / 541.34 ft) x 68.90 ft x (28.22 / 31.74 ft)
	(170.00 m / 165.00 m) x 21.00 m  x (8.60 / 9.67 m)

Armament:
      6 - 9.45" / 240 mm 55.0 cal guns - 485.02lbs / 220.00kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1938 Model
	  1 x 3-gun mount on centreline, forward deck aft
	  1 x 3-gun mount on centreline, forward deck forward
      12 - 5.46" / 139 mm 40.0 cal guns - 88.63lbs / 40.20kg shells, 250 per gun
	  Dual purpose guns in deck and hoist mounts, 1927 Model
	  10 x Single mounts on sides, forward evenly spread
		4 raised mounts
	  2 x Single mounts on centreline, forward evenly spread
		2 raised mounts
      Weight of broadside 3,974 lbs / 1,802 kg
      Main Torpedoes
      16 - 21.7" / 550 mm, 27.17 ft / 8.28 m torpedoes - 1.900 t each, 30.404 t total
	In 4 sets of deck mounted carriage/fixed tubes

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.87" / 200 mm	270.67 ft / 82.50 m	6.56 ft / 2.00 m
	Ends:	1.97" / 50 mm	189.47 ft / 57.75 m	8.20 ft / 2.50 m
	  81.20 ft / 24.75 m Unarmoured ends
	Upper:	1.97" / 50 mm	216.54 ft / 66.00 m	13.12 ft / 4.00 m
	  Main Belt covers 77 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		1.97" / 50 mm	270.67 ft / 82.50 m	26.25 ft / 8.00 m
	Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	11.8" / 300 mm	3.15" / 80 mm		7.09" / 180 mm
	3rd:	2.36" / 60 mm	0.79" / 20 mm		2.36" / 60 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 3.15" / 80 mm
	Forecastle: 1.18" / 30 mm  Quarter deck: 3.15" / 80 mm

   - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 1 shaft, 45,082 shp / 33,631 Kw = 27.00 kts
	Range 20,000nm at 15.00 kts
	Bunker at max displacement = 5,529 tons

Complement:
	610 - 794

Cost:
	£5.023 million / $20.091 million

Distribution of weights at normal displacement:
	Armament: 1,204 tons, 9.2 %
	   - Guns: 1,166 tons, 8.9 %
	   - Weapons: 38 tons, 0.3 %
	Armour: 3,343 tons, 25.6 %
	   - Belts: 996 tons, 7.6 %
	   - Torpedo bulkhead: 517 tons, 4.0 %
	   - Armament: 497 tons, 3.8 %
	   - Armour Deck: 1,238 tons, 9.5 %
	   - Conning Tower: 94 tons, 0.7 %
	Machinery: 1,234 tons, 9.4 %
	Hull, fittings & equipment: 3,467 tons, 26.5 %
	Fuel, ammunition & stores: 3,724 tons, 28.5 %
	Miscellaneous weights: 100 tons, 0.8 %
	   - Hull above water: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  22,365 lbs / 10,145 Kg = 53.0 x 9.4 " / 240 mm shells or 3.0 torpedoes
	Stability (Unstable if below 1.00): 1.23
	Metacentric height 4.2 ft / 1.3 m
	Roll period: 14.1 seconds
	Steadiness	- As gun platform (Average = 50 %): 53 %
			- Recoil effect (Restricted arc if above 1.00): 0.46
	Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
	Hull has low quarterdeck ,
	  a ram bow and large transom stern
	Block coefficient (normal/deep): 0.435 / 0.459
	Length to Beam Ratio: 7.86 : 1
	'Natural speed' for length: 27.34 kts
	Power going to wave formation at top speed: 51 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -10.00 degrees
	Stern overhang: 9.84 ft / 3.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	35.00 %,  19.69 ft / 6.00 m,  16.40 ft / 5.00 m
	   - Forward deck:	40.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
	   - Aft deck:	10.00 %,  16.40 ft / 5.00 m,  14.76 ft / 4.50 m
	   - Quarter deck:	15.00 %,  0.00 ft / 0.00 m,  0.00 ft / 0.00 m
	   - Average freeboard:		14.32 ft / 4.37 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 74.7 %
		- Above water (accommodation/working, high = better): 119.8 %
	Waterplane Area: 24,409 Square feet or 2,268 Square metres
	Displacement factor (Displacement / loading): 136 %
	Structure weight / hull surface area: 128 lbs/sq ft or 624 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.94
		- Longitudinal: 1.64
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Adequate accommodation and workspace room


Aviation:
60t above water: floatplane hangar [2]
40t above water: floatplanes in hangar [2]
Floatplanes taxi in and out via aft deck ramp or boom net.

Primary: 240mm/55 Mle 1938
Secondary: 138.6mm/40 Mle 1927
Torpedoes: 55cm 23DT Toulon