1925 Brazil CL

Vickers Project 994E Light Cruiser, Brazilian Destroyer Leader laid down 1925

Displacement:
	3,020 t light; 3,186 t standard; 3,500 t normal; 3,751 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(524.94 ft / 492.13 ft) x 35.43 ft x (16.40 / 17.18 ft)
	(160.00 m / 150.00 m) x 10.80 m  x (5.00 / 5.24 m)

Armament:
      4 - 5.51" / 140 mm 50.0 cal guns - 82.67lbs / 37.50kg shells, 150 per gun
	  Quick firing guns in turret on barbette mounts, 1925 Model
	  1 x Twin mount on centreline, forward deck centre
	  1 x Twin mount on centreline, aft deck aft
      8 - 5.51" / 140 mm 50.0 cal guns - 82.67lbs / 37.50kg shells, 150 per gun
	  Quick firing guns in casemate mounts, 1925 Model
	  4 x Single mounts on sides, forward evenly spread
	  4 x Single mounts on sides, aft evenly spread
      1 - 1.57" / 40.0 mm 39.0 cal gun - 1.86lbs / 0.84kg shells, 250 per gun
	  Dual purpose gun in deck mount, 1925 Model
	  1 x Single mount on centreline, forward deck forward
      8 - 1.57" / 40.0 mm 39.0 cal guns - 2.01lbs / 0.91kg shells, 1,500 per gun
	  Dual purpose guns in deck mounts, 1925 Model
	  2 x 2 row quad mounts on centreline, forward evenly spread
		2 raised mounts
      4 - 0.30" / 7.7 mm 92.0 cal guns - 0.02lbs / 0.01kg shells, 10,000 per gun
	  Dual purpose guns in deck mounts, 1925 Model
	  4 x Single mounts on centreline, forward evenly spread
		4 double raised mounts
      Weight of broadside 1,010 lbs / 458 kg
      Main Torpedoes
      25 - 21.0" / 533 mm, 23.25 ft / 7.09 m torpedoes - 1.513 t each, 37.823 t total
	In 5 sets of deck mounted centre rotating tubes
      Main DC/AS Mortars
      16 - 430.00 lbs / 195.04 kg Depth Charges + 16 reloads - 6.143 t total
	in Stern depth charge racks
      2nd DC/AS Mortars
      8 - 430.00 lbs / 195.04 kg Depth Charges + 8 reloads - 3.071 t total
	in Depth charge throwers

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	2.48" / 63 mm	295.28 ft / 90.00 m	9.84 ft / 3.00 m
	Ends:	Unarmoured
	  Main Belt covers 92 % of normal length
	  Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		0.98" / 25 mm	492.13 ft / 150.00 m	26.25 ft / 8.00 m
	Beam between torpedo bulkheads 35.43 ft / 10.80 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	2.99" / 76 mm	0.98" / 25 mm		2.99" / 76 mm
	2nd:	2.99" / 76 mm	0.98" / 25 mm		2.99" / 76 mm
	3rd:	0.47" / 12 mm	      -			      -
	4th:	1.26" / 32 mm	0.24" / 6 mm		      -

   - Armoured deck - single deck:
	For and Aft decks: 0.98" / 25 mm
	Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 2.99" / 76 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 23,851 shp / 17,793 Kw = 28.00 kts
	Range 1,500nm at 23.50 kts
	Bunker at max displacement = 565 tons

Complement:
	226 - 295

Cost:
	£0.948 million / $3.794 million

Distribution of weights at normal displacement:
	Armament: 318 tons, 9.1 %
	   - Guns: 230 tons, 6.6 %
	   - Weapons: 88 tons, 2.5 %
	Armour: 1,100 tons, 31.4 %
	   - Belts: 290 tons, 8.3 %
	   - Torpedo bulkhead: 470 tons, 13.4 %
	   - Armament: 116 tons, 3.3 %
	   - Armour Deck: 208 tons, 6.0 %
	   - Conning Tower: 15 tons, 0.4 %
	Machinery: 774 tons, 22.1 %
	Hull, fittings & equipment: 728 tons, 20.8 %
	Fuel, ammunition & stores: 480 tons, 13.7 %
	Miscellaneous weights: 100 tons, 2.9 %
	   - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  4,009 lbs / 1,818 Kg = 47.9 x 5.5 " / 140 mm shells or 0.9 torpedoes
	Stability (Unstable if below 1.00): 1.14
	Metacentric height 1.4 ft / 0.4 m
	Roll period: 12.8 seconds
	Steadiness	- As gun platform (Average = 50 %): 56 %
			- Recoil effect (Restricted arc if above 1.00): 0.66
	Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
	Hull has rise forward of midbreak,
	  a normal bow and large transom stern
	Block coefficient (normal/deep): 0.428 / 0.438
	Length to Beam Ratio: 13.89 : 1
	'Natural speed' for length: 24.92 kts
	Power going to wave formation at top speed: 46 %
	Trim (Max stability = 0, Max steadiness = 100): 47
	Bow angle (Positive = bow angles forward): 33.70 degrees
	Stern overhang: 16.40 ft / 5.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  24.61 ft / 7.50 m,  16.40 ft / 5.00 m
	   - Forward deck:	28.60 %,  16.40 ft / 5.00 m,  14.76 ft / 4.50 m
	   - Aft deck:	31.40 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
	   - Quarter deck:	20.00 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
	   - Average freeboard:		11.77 ft / 3.59 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 93.2 %
		- Above water (accommodation/working, high = better): 64.0 %
	Waterplane Area: 11,355 Square feet or 1,055 Square metres
	Displacement factor (Displacement / loading): 101 %
	Structure weight / hull surface area: 68 lbs/sq ft or 332 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 1.00
		- Longitudinal: 1.00
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Cramped accommodation and workspace room
	Good seaboat, rides out heavy weather easily

2m deck is 0.5" structural deck strengthened by 1, to total of 1.5" (38mm).
Weather deck over forward section is "D" steel structure only.
Hull sides (originally .5") strengthened by 1" over entire ship, to total of 1.5"(38mm).
Citadel has additional plating of 2.5"(63mm) KC over citadel, total thickness of 4"(102mm). Citadel extends 2m above waterline and, contrary to SS warning, is quite roomy inside because this is not a battleship.
8x K-guns, 2x 8-DC racks, 24 spare depth charges (total 48), 430lb Type D charges
5.5"/50 BL Mark I (1913 12rpm 37.5kg 17km)
2-pdr QF Mark VIII (1923)
.303 Vickers Machinegun
21" Mark V Torpedoes (1917 7.086m )