SMS Odin was the lead ship of her class of coastal defense ships built for the Imperial German Navy. She had one sister ship, Ägir. Odin, named for the eponymous Norse god, was built by the Kaiserliche Werft in Danzig between 1893 and 1896, and was armed with a main battery of three 24-centimeter (9.4 in) guns. She served in the German fleet throughout the 1890s and was rebuilt in 1901–1903. She served in the VI Battle Squadron after the outbreak of World War I in August 1914, but saw no action. Odin was demobilized in 1915 and used as a tender thereafter. After the war, she was rebuilt as a merchant ship and served in this capacity until 1935, when she was broken up for scrap.

SMS Friedrich Carl was a German armored cruiser built in the early 1900s for the German Kaiserliche Marine. She was the second and final member of the Prinz Adalbert class, which was built to provide scouts for the German fleet and station ships in Germany's colonial empire. Friedrich Carl was built by the Blohm & Voss shipyard in Hamburg. She was laid down in August 1901, launched in June 1902, and commissioned in December 1903. She was armed with a main battery of four 21 cm (8.3 in) guns and could reach a top speed of 20 knots.