The second ship to be named Pledge by the Navy, MSO-492, a minesweeper, was laid down on 24 June 1954 by the J. M. Martinac Shipbuilding Corp., Tacoma, Washington, launched 20 July 1955, sponsored by Mrs. T. F. Uitsch, and commissioned 20 April 1956.

In May-June of 1958 the Pledge participated in training exercises with Canadian minesweepers off the coast of Vancouver Island near Cook Inlet.

In early 1962 she participated in special training operations at Da Nang, Vietnam until her departure 17 February.

On her next assignment to WESTPAC, 13 August 1965, She performed coastal surveillance duties off the Republic of Vietnam from 18 October to 16 November 1965 and from 18 December into early 1966.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.