USS Seven Seas (IX-68)
 USS Seven Seas (IX-68) was built by Bergsund M.V. Atkieb in Stockholm Sweden in 1912 and served the Swedish Navy as the training ship Abraham Rydberg. Acquired by the United States Navy from William S. Gubelmann of Marine Airways Roslyn New York on 10 April 1942 and placed in service on 5 May 1942.