USS Thornback (SS-418) laid down

on 5 April 1944 Tench-class submarine USS Thornback (SS-418) was laid down at Portsmouth Naval Shipyard, Kittery, ME.
She was transferred to Turkey on July 1 1971 as TCG Uluçalireis (S 338) and is now a Museum submarine at the Rahmi M. Koç Museum in Istanbul, Turkey