High Quality Content by WIKIPEDIA articles! USS Atlantis (SP-40) was a wooden hulled motorboat built in 1911 at Greenport, Long Island, New York, by the Greenport Basin and Construction Company. The vessel was acquired by the Navy from Leonard H. Dyer of New York City, on 2 July 1917. Slated for service as a section patrol boat, the boat was designated SP-40 and was commissioned on 27 September 1917, Chief Boatswain Edward Cunningham, USNRF, in command.