SMS Derfflinger
 SMS Derfflinger was a battlecruiser of the German Kaiserliche Marine built just before the outbreak of World War I. She was the lead vessel of her class of three ships; her sister ships were Lützow and Hindenburg. The Derfflinger-class battlecruisers were larger and featured significant improvements over the previous German battlecruisers in terms of armament armor protection and cruising range.