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.

SMS Yorck was the second and final ship of the Roon class of armored cruisers built for the German Kaiserliche Marine as part of a major naval expansion program aimed at strengthening the fleet. Yorck was named for Ludwig Yorck von Wartenburg, a Prussian field marshal. She was laid down in 1903 at the Blohm & Voss shipyard in Hamburg, launched in May 1904, and commissioned in November 1905. The ship was armed with a main battery of four 21 cm (8.3 in) guns and had a top speed of 20.4 knots. Like many of the late armored cruisers, Yorck was quickly rendered obsolescent by the advent of the battlecruiser; as a result, her peacetime career was limited.