A twelve mile wide restricted zone existed along the entire South Vietnamese coast and ships assigned to Market Time had the authority to stop and search any vessel within the zone for contraband material and check the identity papers of any person on a detained vessel.

The trawler crossed the 12-mile limit at 0120 1 March and began a run for the beach near the mouth of the Bo De River at 0200.

[12] Surveillance was continued by Market Time vessels until she crossed the 12-mile limit 28 miles northeast of Nha Trang.

Assisted by a U.S. Air Force AC-47 gunship, swift boats PCF-42, PCF-43, PCF-46, PCF-47, PCF-48 and two SVN junks sortied to help the patrol craft chase the trawler to a cove where it ran aground in the Hon Heo Secret Zone[1][10][13] At 0230, 1 March, five 81-millimeter mortar rounds from PCF-47 were direct hits and the trawler exploded with a massive explosion due to the munitions aboard.

[15][16] As a result of a civilian junk passing through the battle area the Market Time ships had to cease fire.

[1] While on Market Time patrol duties on 1 March, USS Persistent discovered an abandoned junk at anchor 52 miles southeast of Da Nang.

[1] The destruction of three of the four trawlers and the turning back of the fourth demonstrated that Operation Market Time was an effective net for the interception of supplies destined for resupply of the Viet Cong.

[21] The North Vietnamese were forced to use the Ho Chi Minh trail through Laos or the neutral port of Sihanoukville in Cambodia to ship supplies to the Viet Cong.

With the closing of the port at Sihanoukville to Communist shipping in August 1969, attempted North Vietnamese trawler traffic into South Vietnam resumed.

[21] This article incorporates public domain material from U.S. Navy, Naval History and Heritage Command's Operational Archives.