Harald Haarfagre
Commissioned in 1898, HNoMS Harald Haarfagre was a Norwegian coastal defence ship. She, her sister ship Tordenskjold and the slightly newer Eidsvold class were built as part of a general rearmament. Harald Haarfagre remained an important vessel in the Royal Norwegian Navy until she was considered unfit for war in the mid-1930s.
After the German invasion of Norway, she was seized by the Germans and rebuilt as a floating flak battery under the name Thetis. After the war Harald Haarfagre was used briefly as a floating barracks, and for transporting German POWs, before she was sold for scrapping in 1948.