SS-340, originally named Chickwick, was renamed Entemedor on 24 September 1942 and launched on 17 December 1944 by the Electric Boat Company, Groton, Connecticut, sponsored by Mrs. E. V. Izac; and commissioned on 6 April 1945.

Entemedor reached Pearl Harbor on 29 June 1945 from New London, en route to Midway Atoll for advanced training and to prepare for war patrols.

On 31 January 1952, she entered the Electric Boat Co.'s yard for an extensive GUPPY IIA modernization, was placed in commission in reserve on 28 February 1952, and returned to active status 17 October 1952.

Her stateside operations included participation in large-scale exercises off the east coast and in the Caribbean, and serving as target for Task Force "Alfa", in development of antisubmarine warfare techniques.

Entemedor was transferred to Turkey under the terms of the Security Assistance Act on 24 August 1972 and renamed TCG Preveze (S 345), the second Turkish Navy submarine of that name.