USS PC-1639

History
United States
Name	PC-1640
Builder	Gunderson Brothers Engineering Corp., Portland
Laid down	1963
Launched	1964
Fate	Transferred to Turkish Navy
Turkey
Name	Demirhisar
Identification	Callsign: TBLN; Pennant number: P 112;
Status	Unknown
General characteristics
Class and type	PC-1638-class submarine chaser; Hisar-class patrol boat;
Displacement	295 tons (full load)
Length	175 ft (53 m)
Beam	23 ft (7.0 m)
Draft	10 ft 10 in (3.30 m)
Propulsion	2 x 2,400hp ALCO 169X 10AT diesel engines; 2 shafts;
Speed	20 knots (37 km/h)
Complement	59
Armament	1 x Mk 15 ASW Hedgehog mortar; 1 × 40 mm gun; 3 × 20 mm cannons; 2 rocket launchers; 4 depth charge projectiles; 2 depth charge tracks;

USS PC-1639 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 Demirhisar (P 112) of the Hisar-class patrol boat.

Construction and commissioning

She was transferred to the Turkish Navy in San Diego and renamed TCG Demirhisar (P 112).^[1]