GROßE KRUEZERThe Shell Magnet - SMS Seydlitz
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Though outwardly similar to the Moltke-class, SMS Seydlitz was built with a longer but slimmer hull than Moltke and with greater compartmentation and armor - her belt armor was on par with contemporary battleships. A raised forecastle made her a drier boat than her predecessors, but like them she mounted the tried and true 280mm (11") gun in 50 caliber. By this time her British adversaries were mounting 13.5"/45-cal guns, leaving Seydlitz undergunned for her size. At the Battle of Dogger Bank she took a pair of shells aft that detonated near the aft two turrets, putting them out of action and killing their crews. Only with luck and prompt damage control was a catastrophic explosion averted. In return Seydlitz damaged HMS Lion so severely that she had to be towed home. But the lesson was taken to heart by the entire German Navy and improved ammunition handling procedures instituted to ensure such a hit could not threaten an entire vessel. At Jutland Seydlitz was in the thick of it again, credited (with SMS Derfflinger) with sinking HMS Queen Mary. With hits from 21 shells 12" or larger and one torpedo, she limped home with more than 5,300 TONS of water sloshing in her hull, to the extent her bow had less than 2.5m (8 ft) of freeboard foreward when she pulled into port. After finishing her design the German navy finally got around to building their battlecruisers in quantity instead of one's and two's while upgrading to the 305mm (12")/50-cal gun, unfortunately by the time the first of the Derfflinger-class had been commissioned, the war had begun.
| PHOTOSPlans and Construction Line Drawing - Top and Side Views (Koop) Line Drawing - Side View (Koop) Line Drawing - Top View (Koop) Line Drawing - Side View - 1918 (Greger) Line Drawing - Side View - 1918 (Gröner) Armor Plan Active Duty
The Battle of Jutland (aka the Battle of Skagerrak) - 31 May to 1 June, 1916
The Final Act - Scapa Flow
| SPECIFICATIONSProject Name: Heavy Cruiser J Builder: Blohm & Voss, Hamburg Laid Down: February 4, 1911 Launched: March 30, 1912 Commissioned: May 11, 1913 Sunk: June 21, 1919 (Scuttled at Jutland) Scrapped: Raised November, 1928 - Scrapped 1930 Displacement: 24,988 tonnes (designed) / 28,550 tonnes (maximum) Dimensions (meters): 200.6 (overall) x 28.5 x 9.29 Dimensions (feet): 661.98 (overall) x 94.05 x 30.66 # of Shafts: 4 # of Propeller Blades: 3 (3.88m diameter) # of Rudders: 2 (tandem - one ahead of the other) Max Speed/Range: 26.5 kts / 4,200 nm at 14 kts Main Battery: Ten 280mm (11")/50 caliber - 5 twin turrets Secondary Battery: Twelve 150mm (5.9")/45 caliber - 12 casement mounts (Goeben only had 10 after 1915) AA Battery: Twelve 88mm (3.5")/45 caliber - single mounts Torpedo Tubes: Four 50cm tubes (all underwater - one bow, one stern [portside], one mounted on each side just forward of "Anton" turret) Complement: 43 officers and 1,025 enlisted (as designed)
| LINKS TO OTHER WEB-SITESNaval Weapons of the World German Naval Guns Naval Weapons of the World Pre-World War II German Torpedoes German Kriegsmarine Encyclopedia
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