AKA Majakkalaiva (Lightship) Helsinki, Libauskiy
The ship was built for the Russian Navy by the Putilov shipyard in St. Petersburg. Its first assignment was as the Libauskij off Libau (now Liepaja) in Latvia. Captured as a war prize by Finland following World War I, the ship served the Relandersgrund and Äransgrund stations and then the Helsinki station from 1933 to 1959. In 1961 it was renamed Hyöky and converted to a hydrographic support ship. Retired in 1983, it was restored as a floating restaurant and museum.