Snapphanen, Sweden Armoured destroyer laid down 1941 Displacement: 3 302 t light; 3 444 t standard; 3 700 t normal; 3 905 t full load Dimensions: Length overall / water x beam x draught 471,56 ft / 452,76 ft x 42,65 ft x 13,12 ft (normal load) 143,73 m / 138,00 m x 13,00 m x 4,00 m Armament: 6 - 5,98" / 152 mm guns (3x2 guns), 107,15lbs / 48,60kg shells, 1941 Model Dual purpose guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring 8 - 2,95" / 75,0 mm guns (4x2 guns), 12,87lbs / 5,84kg shells, 1941 Model Anti-aircraft guns in deck mounts with hoists on side, all amidships 12 - 1,57" / 40,0 mm guns (4x3 guns), 1,95lbs / 0,88kg shells, 1941 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts Weight of broadside 769 lbs / 349 kg Shells per gun, main battery: 150 15 - 21,0" / 533 mm above water torpedoes Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 0,79" / 20 mm 363,52 ft / 110,80 m 7,84 ft / 2,39 m Ends: Unarmoured Main Belt covers 124 % of normal length - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 0,79" / 20 mm 0,39" / 10 mm 0,59" / 15 mm 2nd: 0,20" / 5 mm - 0,20" / 5 mm - Armour deck: 0,47" / 12 mm, Conning tower: 0,98" / 25 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 3 shafts, 44 228 shp / 32 994 Kw = 32,00 kts Range 3 500nm at 16,00 kts Bunker at max displacement = 460 tons Complement: 236 - 308 Cost: £2,225 million / $8,901 million Distribution of weights at normal displacement: Armament: 96 tons, 2,6 % Armour: 246 tons, 6,6 % - Belts: 90 tons, 2,4 % - Torpedo bulkhead: 0 tons, 0,0 % - Armament: 32 tons, 0,9 % - Armour Deck: 118 tons, 3,2 % - Conning Tower: 5 tons, 0,1 % Machinery: 1 169 tons, 31,6 % Hull, fittings & equipment: 1 766 tons, 47,7 % Fuel, ammunition & stores: 398 tons, 10,8 % Miscellaneous weights: 25 tons, 0,7 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 3 421 lbs / 1 552 Kg = 31,9 x 6,0 " / 152 mm shells or 0,8 torpedoes Stability (Unstable if below 1.00): 1,10 Metacentric height 1,7 ft / 0,5 m Roll period: 13,9 seconds Steadiness - As gun platform (Average = 50 %): 63 % - Recoil effect (Restricted arc if above 1.00): 0,70 Seaboat quality (Average = 1.00): 1,04 Hull form characteristics: Hull has rise forward of midbreak and transom stern Block coefficient: 0,511 Length to Beam Ratio: 10,62 : 1 'Natural speed' for length: 24,14 kts Power going to wave formation at top speed: 62 % Trim (Max stability = 0, Max steadiness = 100): 60 Bow angle (Positive = bow angles forward): 25,00 degrees Stern overhang: 6,56 ft / 2,00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 26,25 ft / 8,00 m - Forecastle (20 %): 19,69 ft / 6,00 m - Mid (50 %): 19,69 ft / 6,00 m (13,12 ft / 4,00 m aft of break) - Quarterdeck (15 %): 13,12 ft / 4,00 m - Stern: 13,12 ft / 4,00 m - Average freeboard: 16,93 ft / 5,16 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 123,3 % - Above water (accommodation/working, high = better): 82,0 % Waterplane Area: 13 519 Square feet or 1 256 Square metres Displacement factor (Displacement / loading): 110 % Structure weight / hull surface area: 76 lbs/sq ft or 373 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0,93 - Longitudinal: 1,99 - Overall: 1,00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is cramped