Lord Sandwich-Class CDS [1920] (UK)

Lord Sandwich-Class, United Kingdom Coastal Defense Ship laid down 1920

Displacement:
	3,911 t light; 4,281 t standard; 4,469 t normal; 4,619 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(298.99 ft / 295.28 ft) x 65.62 ft x (15.58 / 15.98 ft)
	(91.13 m / 90.00 m) x 20.00 m  x (4.75 / 4.87 m)

Armament:
      4 - 9.45" / 240 mm 50.0 cal guns - 390.99lbs / 177.35kg shells, 130 per gun
	  Breech loading guns in turret on barbette mounts, 1913 Model
	  2 x Twin mounts on centreline, evenly spread
      14 - 5.98" / 152 mm 50.0 cal guns - 100.00lbs / 45.36kg shells, 200 per gun
	  Breech loading guns in casemate mounts, 1913 Model
	  14 x Single mounts on sides, evenly spread
      4 - 3.00" / 76.2 mm 45.0 cal guns - 12.50lbs / 5.67kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1910 Model
	  4 x Single mounts on centreline, evenly spread
		4 raised mounts
      4 - 1.57" / 40.0 mm 39.0 cal guns - 2.01lbs / 0.91kg shells, 800 per gun
	  Anti-air guns in deck mounts, 1914 Model
	  4 x Single mounts on sides, evenly spread
      Weight of broadside 3,022 lbs / 1,371 kg
      Mines
      2 - 880.00 lbs / 399.16 kg mines + 100 reloads - 40.071 t total
	in Above water - Stern racks/rails
      Main DC/AS Mortars
      2 - 420.00 lbs / 190.51 kg Depth Charges + 50 reloads - 9.750 t total
	in Stern depth charge racks

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	5.98" / 152 mm	223.10 ft / 68.00 m	9.71 ft / 2.96 m
	Ends:	2.05" / 52 mm	  72.18 ft / 22.00 m	9.71 ft / 2.96 m
	  Main Belt covers 116 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	223.10 ft / 68.00 m	14.01 ft / 4.27 m
	Beam between torpedo bulkheads 39.37 ft / 12.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	7.99" / 203 mm	5.98" / 152 mm		5.98" / 152 mm
	2nd:	5.98" / 152 mm	0.98" / 25 mm		      -

   - Armoured deck - multiple decks:
	For and Aft decks: 2.05" / 52 mm
	Forecastle: 2.05" / 52 mm  Quarter deck: 2.05" / 52 mm

   - Conning towers: Forward 5.98" / 152 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 3,730 shp / 2,783 Kw = 15.00 kts
	Range 5,000nm at 10.00 kts
	Bunker at max displacement = 338 tons

Complement:
	273 - 355

Cost:
	£1.010 million / $4.039 million

Distribution of weights at normal displacement:
	Armament: 779 tons, 17.4 %
	   - Guns: 717 tons, 16.0 %
	   - Weapons: 62 tons, 1.4 %
	Armour: 1,942 tons, 43.4 %
	   - Belts: 622 tons, 13.9 %
	   - Torpedo bulkhead: 341 tons, 7.6 %
	   - Armament: 442 tons, 9.9 %
	   - Armour Deck: 501 tons, 11.2 %
	   - Conning Tower: 35 tons, 0.8 %
	Machinery: 129 tons, 2.9 %
	Hull, fittings & equipment: 1,061 tons, 23.7 %
	Fuel, ammunition & stores: 557 tons, 12.5 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  7,707 lbs / 3,496 Kg = 18.3 x 9.4 " / 240 mm shells or 2.4 torpedoes
	Stability (Unstable if below 1.00): 1.62
	Metacentric height 6.0 ft / 1.8 m
	Roll period: 11.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 71 %
			- Recoil effect (Restricted arc if above 1.00): 0.23
	Seaboat quality  (Average = 1.00): 1.42

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a round stern
	Block coefficient (normal/deep): 0.518 / 0.522
	Length to Beam Ratio: 4.50 : 1
	'Natural speed' for length: 17.18 kts
	Power going to wave formation at top speed: 45 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 2.00 degrees
	Stern overhang: 3.28 ft / 1.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  12.30 ft / 3.75 m,  9.84 ft / 3.00 m
	   - Forward deck:	30.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
	   - Aft deck:	35.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
	   - Quarter deck:	15.00 %,  9.84 ft / 3.00 m,  11.48 ft / 3.50 m
	   - Average freeboard:		10.16 ft / 3.10 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 112.4 %
		- Above water (accommodation/working, high = better): 90.1 %
	Waterplane Area: 13,124 Square feet or 1,219 Square metres
	Displacement factor (Displacement / loading): 93 %
	Structure weight / hull surface area: 109 lbs/sq ft or 531 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.92
		- Longitudinal: 2.04
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Adequate accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Good seaboat, rides out heavy weather easily

Armament:
=========
-9.2"/51 MKII Guns
-6"/50 BL MK XVII Guns
-12pdr [3"/45] 20 cwt  QF HA
-2-pdr QF MK II*C