USS PC-1642

USS PC-1642 was an PC-1638-class submarine chaser in the United States Navy during the Cold War. She was transferred to the Turkish Navy as TCG Sivrihisar (P 115) of the Hisar-class patrol boat.

Construction and commissioning
PC-1642 was laid down in 1963 at Gunderson Brothers Engineering Corps., Portland, Oregon. Launched in 1964.

She was transferred to the Turkish Navy and renamed TCG Sivrihisar (P 115).