The Cöln class of light cruisers was Germany's last class commissioned before her defeat in World War I. Originally planned to comprise ten ships, only two were completed; Cöln and Dresden. Five more were launched, but not completed: Wiesbaden, Magdeburg, Leipzig, Rostock and Frauenlob, while another three were laid down but not launched: Ersatz Cöln, Ersatz Emden and Ersatz Karlsruhe (for the last three, the names quoted were only provisional titles to be used during construction, and the three would have received other names at their launch if that had taken place). The design was a slightly modified version of the preceding Königsberg class.