CRNS Tempidari - 1936 Destroyer Mid Break

CRNS Tempidari, Calder Republic Destroyer laid down 1935 (Engine 1941)

Displacement:
	1,611 t light; 1,675 t standard; 1,900 t normal; 2,080 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(385.57 ft / 377.30 ft) x 37.07 ft x (11.32 / 12.04 ft)
	(117.52 m / 115.00 m) x 11.30 m  x (3.45 / 3.67 m)

Armament:
      5 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 100 per gun
	  Quick firing guns in deck and hoist mounts, 1935 Model
	  5 x Single mounts on centreline, evenly spread
		2 raised mounts
      4 - 1.46" / 37.0 mm 69.0 cal guns - 1.73lbs / 0.78kg shells, 2,000 per gun
	  Anti-air guns in deck mounts, 1935 Model
	  2 x Twin mounts on sides amidships
      Weight of broadside 345 lbs / 156 kg
      Main Torpedoes
      10 - 21.0" / 533 mm, 21.59 ft / 6.58 m torpedoes - 1.455 t each, 14.549 t total
	In 2 sets of deck mounted centre rotating tubes
      Main DC/AS Mortars
      2 - 421.08 lbs / 191.00 kg Depth Charges + 10 reloads - 2.256 t total
	in Stern depth charge racks
      2nd DC/AS Mortars
      2 - 421.08 lbs / 191.00 kg Depth Charges + 10 reloads - 2.256 t total
	in Depth charge throwers

Armour:
   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	2.56" / 65 mm	0.51" / 13 mm		0.51" / 13 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 54,912 shp / 40,965 Kw = 35.50 kts
	Range 5,200nm at 15.00 kts
	Bunker at max displacement = 404 tons

Complement:
	143 - 187

Cost:
	£1.195 million / $4.779 million

Distribution of weights at normal displacement:
	Armament: 129 tons, 6.8 %
	   - Guns: 93 tons, 4.9 %
	   - Weapons: 35 tons, 1.9 %
	Armour: 27 tons, 1.4 %
	   - Armament: 27 tons, 1.4 %
	Machinery: 1,039 tons, 54.7 %
	Hull, fittings & equipment: 402 tons, 21.1 %
	Fuel, ammunition & stores: 289 tons, 15.2 %
	Miscellaneous weights: 15 tons, 0.8 %
	   - On freeboard deck: 15 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  289 lbs / 131 Kg = 4.3 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: 13.8 seconds
	Steadiness	- As gun platform (Average = 50 %): 43 %
			- Recoil effect (Restricted arc if above 1.00): 0.36
	Seaboat quality  (Average = 1.00): 0.37

Hull form characteristics:
	Hull has rise forward of midbreak,
	  a normal bow and a round stern
	Block coefficient (normal/deep): 0.420 / 0.432
	Length to Beam Ratio: 10.18 : 1
	'Natural speed' for length: 19.42 kts
	Power going to wave formation at top speed: 68 %
	Trim (Max stability = 0, Max steadiness = 100): 100
	Bow angle (Positive = bow angles forward): 19.00 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 %,  16.40 ft / 5.00 m,  13.12 ft / 4.00 m
	   - Forward deck:	24.00 %,  13.12 ft / 4.00 m,  11.15 ft / 3.40 m
	   - Aft deck:	41.00 %,  7.87 ft / 2.40 m,  6.56 ft / 2.00 m
	   - Quarter deck:	17.50 %,  6.56 ft / 2.00 m,  5.91 ft / 1.80 m
	   - Average freeboard:		9.49 ft / 2.89 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 192.1 %
		- Above water (accommodation/working, high = better): 83.4 %
	Waterplane Area: 8,720 Square feet or 810 Square metres
	Displacement factor (Displacement / loading): 58 %
	Structure weight / hull surface area: 35 lbs/sq ft or 172 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.50
		- Longitudinal: 0.51
		- Overall: 0.50
	Cramped machinery, storage, compartmentation space
	Cramped accommodation and workspace room
	Caution: Lacks seaworthiness - very limited seakeeping ability