From: Dictionary of American Naval Fighting Ships

(AMc-65: dp. 195, 1. 97'0"; b. 22'0"; dr. 9'0"; s. 10.0 k.; cpl. 19; a. 2 .50-cal. mg., 2 .30-cal. mg.; cl. Accentor)

The still unnamed wooden-hulled coastal minesweeper AMc-65 was laid down on 5 April 1941 at South Bristol, Maine, by the Bristol Yacht Building Co.; named Avenge (AMc-65) on 17 May 1941; renamed Assertive on 23 May 1941 when the name Avenge was reassigned to AMc-66, launched on 19 November 1941, sponsored by Mrs. Harvey Gamage of Bristol, Maine, the wife of a partner in the Bristol Yacht Building Co., delivered to the Navy at the Boston Navy Yard on 19 February 1942 and placed in service there on 7 March 1942.

Following shakedown training at the Mine Warfare School Yorktown, Va., Assertive was assigned to the 3d Naval District and operated from New York for the duration of the war in Europe. In mid-June 1945, the minesweeper was shifted south to the 6th Naval District and operated out of Charleston, S.C. on sweeping duties until 7 July, when she returned to the 3d Naval District. Directed to proceed back to Charleston for disposition under the auspices of Commandant 6th Naval District, Assertive was placed out of service there on 30 November 1945, and her name was struck from the Navy list on 19 December 1945.

Accepted by the Maritime Commission on 4 October 1946, the former minecraft was simultaneously delivered, at Charleston to her purchaser, Mr. Joseph Giacalone of Boston.