CRNS Celerai, Calder Destroyer 1938

CRNS Celerai, Calder Destroyer laid down 1938 (Engine 1939)

Displacement:
	1,820 t light; 1,910 t standard; 2,124 t normal; 2,294 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(391.28 ft / 381.23 ft) x 37.07 ft x (11.48 / 12.14 ft)
	(119.26 m / 116.20 m) x 11.30 m  x (3.50 / 3.70 m)

Armament:
      6 - 5.12" / 130 mm 40.0 cal guns - 64.25lbs / 29.14kg shells, 200 per gun
	  Dual purpose guns in deck and hoist mounts, 1932 Model
	  3 x 2-gun mounts on centreline ends, majority forward
		2 raised mounts - superfiring
      8 - 1.46" / 37.0 mm 69.0 cal guns - 1.73lbs / 0.78kg shells, 600 per gun
	  Anti-air guns in deck mounts, 1928 Model
	  2 x Twin mounts on sides, aft deck forward
	  2 x Single mounts on sides, forward deck centre
      Weight of broadside 399 lbs / 181 kg
      Main Torpedoes
      5 - 21.0" / 533 mm, 21.59 ft / 6.58 m torpedoes - 1.467 t each, 7.334 t total
	In 1 sets of deck mounted centre rotating tubes
      Main DC/AS Mortars
      2 - 421.08 lbs / 191.00 kg Depth Charges + 19 reloads - 3.948 t total
	in Stern depth charge racks
      2nd DC/AS Mortars
      4 - 421.08 lbs / 191.00 kg Depth Charges + 5 reloads - 1.692 t total
	in Depth charge throwers

Armour:
   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	0.79" / 20 mm	0.79" / 20 mm		      -

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 58,595 shp / 43,712 Kw = 35.30 kts
	Range 7,500nm at 12.00 kts
	Bunker at max displacement = 384 tons

Complement:
	156 - 203

Cost:
	£1.485 million / $5.940 million

Distribution of weights at normal displacement:
	Armament: 126 tons, 5.9 %
	   - Guns: 103 tons, 4.9 %
	   - Weapons: 22 tons, 1.0 %
	Armour: 19 tons, 0.9 %
	   - Armament: 19 tons, 0.9 %
	Machinery: 1,184 tons, 55.7 %
	Hull, fittings & equipment: 476 tons, 22.4 %
	Fuel, ammunition & stores: 303 tons, 14.3 %
	Miscellaneous weights: 15 tons, 0.7 %
	   - On freeboard deck: 15 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  350 lbs / 159 Kg = 5.2 x 5.1 " / 130 mm shells or 0.2 torpedoes
	Stability (Unstable if below 1.00): 1.07
	Metacentric height 1.3 ft / 0.4 m
	Roll period: 13.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 48 %
			- Recoil effect (Restricted arc if above 1.00): 0.56
	Seaboat quality  (Average = 1.00): 0.50

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a round stern
	Block coefficient (normal/deep): 0.458 / 0.468
	Length to Beam Ratio: 10.28 : 1
	'Natural speed' for length: 19.53 kts
	Power going to wave formation at top speed: 69 %
	Trim (Max stability = 0, Max steadiness = 100): 92
	Bow angle (Positive = bow angles forward): 22.00 degrees
	Stern overhang: 2.62 ft / 0.80 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	17.50 %,  18.37 ft / 5.60 m,  14.44 ft / 4.40 m
	   - Forward deck:	40.00 %,  14.44 ft / 4.40 m,  10.50 ft / 3.20 m
	   - Aft deck:	25.00 %,  10.50 ft / 3.20 m,  10.50 ft / 3.20 m
	   - Quarter deck:	17.50 %,  10.50 ft / 3.20 m,  11.81 ft / 3.60 m
	   - Average freeboard:		12.37 ft / 3.77 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 195.4 %
		- Above water (accommodation/working, high = better): 117.0 %
	Waterplane Area: 9,075 Square feet or 843 Square metres
	Displacement factor (Displacement / loading): 60 %
	Structure weight / hull surface area: 37 lbs/sq ft or 182 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.48
		- Longitudinal: 0.71
		- Overall: 0.50
	Cramped machinery, storage, compartmentation space
	Adequate accommodation and workspace room
	Caution: Lacks seaworthiness - very limited seakeeping ability