TCG Yarhisar on 25 May 2007
History
United States
Name	PC-1640
Builder	Gunderson Brothers Engineering Corp., Portland
Laid down	11 March 1963
Launched	14 May 1964
Commissioned	27 August 1964
Decommissioned	18 July 1965
Fate	Transferred to Turkish Navy, 18 July 1965
Turkey
Name	Yarhisar
Acquired	18 July 1965
Commissioned	18 July 1965
Decommissioned	2005
Identification	Callsign: TBLO Pennant number: P 113
Status	Museum ship at Yarhisar Naval Museum, Turkey
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-1640 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 Yarhisar (P 113) of the Hisar-class patrol boat.

PC-1640 was laid down on 11 March 1963 at Gunderson Brothers Engineering Corps., Portland, Oregon. Launched on 14 May 1964 and commissioned on 27 August 1964.

On 18 July 1965, she was transferred to the Turkish Navy in San Diego and renamed TCG Yarhisar (P 113).

She was decommissioned in 2005.

In 2006, beginning to serve as a museum ship, Turkey's first and only land placed warship museum title. The museum ship is open to visitors today on the coast of Gölcük district of Kocaeli.

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