- Class: Seydlitz - 1 battlecruiser of 1910
- Displacement: 25,000 tons
- Dimensions: 658 x 94 x 30.5 ft.
- Machinery: Turbine (Parsons) 4 screws, S.H.P. 90,000 = 28 knots
- Armor: Main belt 12 in., turrets 10 in., deck 3 in.
- Armament: 10-11 in. (5x2), 12-5.9 in. (12x1), 12-3.4 in.; 4-19.7 in. T.T.
- Complement: 1,068-1,143
- Builder: Blohm & Voss, Hamburg
- Laid Down: 4 Feb 1911
- Launched: 30 Mar 1912
- Completed: 22 May 1913
- Actions: Served as flagship of I Scouting Group, RAdm Franz von Hipper. Suffered severe damage at the battle of Dogger Bank, 24 Jan 1915, when a 13.5in shell from HMS Lion struck C turret and nearly caused a magazine explosion. Safety lessons were learned that helped her survive 21 major caliber shell hits at Jutland on 31 May 1916, although her forward freeboard was reduced to about 8 ft. In turn, she and SMS Derfflinger destroyed HMS Queen Mary with salvoes that exploded the latter's magazine. Interned at Scapa Flow at the end of World War I in Nov 1918, then scuttled with the rest of the High Seas Fleet 21 Jun 1919.