PT-492 was a PT-20-class motor torpedo boat of the United States Navy that served during World War II.

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History
United States
Name	PT-492
Builder	Electric Boat Company
Laid down	14 August 1943
Launched	4 November 1943
Sponsored by	United States Navy
Completed	3 December 1943
Commissioned	3 December 1943
Nickname(s)	"Impatient Virgin"
Fate	Sold, May 1946
Notes	Call sign: NDLF
General characteristics
Class and type	Patrol torpedo boat
Tonnage	40 gross register tons
Length	77 feet o/a
Beam	19 feet 11 inches
Height	4 feet 6 inches
Propulsion	Three 1,500 hp Packard V12 M2500 gasoline engines, three shafts.
Armament	Two twin .50 caliber Browning M2 machine guns; Two .303 caliber Lewis machine guns; 2 21" torpedo tubes; Four torpedoes
Service record

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PT-492 was authorized by the United States Navy and laid down on 14 August 1943 at the Elco Works of the Electric Launch Company (now Electric Boat Company) at their Bayonne, New Jersey shipyard; launched on 4 November 1943; and completed on 3 December 1943.^[1] She was commissioned and attached to Motor Torpedo Boat Squadron 33 (MTBRon 33) under the command of Lt. A. Murray Preston and assigned to patrol in the Southwest Pacific.^[1] On 12 December 1944, while patrolling off the coast of Leyte Island with PT-490, they spotted and sunk the destroyer Uzuki 50 miles (80 km) northeast of Cebu at 11°03′N 124°23′E.^[2]

She survived the war. In May 1946, she was transferred to the Foreign Liquidation Commission of the United States State Department and sold.^[1] Her fate is unknown.^[1]