Shipbucket

Ehrenstrahl, Sweden Destroyer laid down 1942

Displacement:
2 268 t light; 2 347 t standard; 2 498 t normal; 2 619 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(388,50 ft / 377,30 ft) x 42,65 ft x (13,12 / 13,53 ft)
(118,41 m / 115,00 m) x 13,00 m x (4,00 / 4,12 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 150 per gun
Dual purpose guns in turret on barbette mounts, 1942 Model
2 x Twin mounts on centreline ends, evenly spread
4 - 2,95" / 75,0 mm 45,0 cal guns - 12,98lbs / 5,89kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1942 Model
2 x Single mounts on centreline ends, evenly spread
2 raised mounts
12 - 1,57" / 40,0 mm 60,0 cal guns - 2,14lbs / 0,97kg shells, 500 per gun
Anti-air guns in deck mounts, 1936 Model
6 x Twin mounts on sides, evenly spread
6 raised mounts
Weight of broadside 290 lbs / 132 kg
Main Torpedoes
10 - 21,0" / 533 mm, 26,25 ft / 8,00 m torpedoes - 1,758 t each, 17,580 t total
In 2 sets of deck mounted centre rotating tubes
Main DC/AS Mortars
4 - 231,49 lbs / 105,00 kg Depth Charges + 30 reloads - 3,514 t total
in Depth charge throwers

Sensors
Type 274 surface search radar
Type 279 aerial search radar
Mk II director with type 285 AA FC radar
Low fq HMS

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,97" / 50 mm 0,39" / 10 mm 1,97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 64 797 shp / 48 338 Kw = 37,00 kts
Range 3 000nm at 14,00 kts
Bunker at max displacement = 272 tons

Complement:
176 - 229

Cost:
£1,923 million / $7,694 million

Distribution of weights at normal displacement:
Armament: 117 tons, 4,7 %
- Guns: 76 tons, 3,0 %
- Weapons: 42 tons, 1,7 %
Armour: 31 tons, 1,3 %
- Armament: 31 tons, 1,3 %
Machinery: 1 394 tons, 55,8 %
Hull, fittings & equipment: 724 tons, 29,0 %
Fuel, ammunition & stores: 230 tons, 9,2 %
Miscellaneous weights: 0 tons, 0,0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
575 lbs / 261 Kg = 10,9 x 4,7 " / 120 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,05
Metacentric height 1,5 ft / 0,5 m
Roll period: 14,4 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0,23
Seaboat quality (Average = 1.00): 0,54

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and large transom stern
Block coefficient (normal/deep): 0,414 / 0,421
Length to Beam Ratio: 8,85 : 1
'Natural speed' for length: 22,66 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 100
Bow angle (Positive = bow angles forward): 26,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20,00 %, 22,97 ft / 7,00 m, 19,69 ft / 6,00 m
- Forward deck: 30,00 %, 19,69 ft / 6,00 m, 16,40 ft / 5,00 m
- Aft deck: 47,00 %, 9,84 ft / 3,00 m, 9,84 ft / 3,00 m
- Quarter deck: 3,00 %, 9,84 ft / 3,00 m, 9,84 ft / 3,00 m
- Average freeboard: 14,53 ft / 4,43 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 190,5 %
- Above water (accommodation/working, high = better): 112,2 %
Waterplane Area: 10 372 Square feet or 964 Square metres
Displacement factor (Displacement / loading): 68 %
Structure weight / hull surface area: 47 lbs/sq ft or 229 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,59
- Longitudinal: 1,30
- Overall: 0,64
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Caution: Lacks seaworthiness - very limited seakeeping ability