USS Illusive (AM-448/MSO-448) was an Agile-class minesweeper acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent the safe passage of ships.

Illusive (AM-448) was launched by Martinolich Shipbuilding Co., San Diego, California, 12 July 1952; sponsored by Mrs. Vito Marino; and commissioned 14 November 1953.

She continued to operate out of Long Beach, taking part in a major U.S. Pacific Fleet training exercise in November 1955.

During this critical period, in which American Navy ships were increasingly active in helping to prevent Communist takeover of the countries of Southeast Asia, the minesweeper carried out maneuvers off Japan, the Philippines, and Okinawa.

On 13 August 1965 Illusive departed Long Beach for training in the Pacific Ocean that took her to Hawaii, the Marshalls, the Marianas, and the Philippines.

She stood out of Subic Bay 2 October 1965 to join the "Market Time Patrol" vigilantly trying to stop the coastal flow of contraband by junks and boats to Vietcong the full length of Vietnam's 1,000-mile coastline.