User:Cuprum17/Vietnam map sandbox

On 28 February 1968, United States Navy SP-2H Neptune aircraft on routine patrol detected a North Vietnamese SL class naval trawler heading towards the South Vietnamese coast from north of the DMZ. By the next morning, three more trawlers were discovered and units of Operation Market Time were deployed for a surprize interception. The suspect trawlers did not fly flags so it was not until the start of the engagement that their origin was discovered. The trawlers were steel hulled vessels, 100 feet long and armed with 57-millimeter recoilless rifles and machine guns. All four were loaded with weapons and ammunition intended to be delivered to the Viet Cong. American and South Vietnamese forces that engaged in action included the minesweeper USS Persistent, the United States Coast Guard cutters USCGC Androscoggin, USCGC Point Grey, USCGC Point Welcome, USCGC Winona, the swift boats PCF-18, PCF-20, PCF-42, PCF-43, PCF-46, PCF-47 and PCF-48, two South Vietnamese Navy junks and one patrol boat. Two U.S. Army helicopter gunships also participated in combat as well as aircraft used to fire flares.

Background
The United States Navy, South Vietnamese Navy and the United States Coast Guard operating under the authority of the South Vietnamese government established a blockade of South Vietnam designated Operation Market Time to prevent infiltrations of personnel, munitions and equipment by the North Vietnamese government. 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.

Action off Bo De River
The trawler designated in U.S. Navy records as An Xuyen Province Trawler (map reference #1) was first sighted on 28 February approximately 150 miles east southeast of Vung Tau holding a southeasterly course. On the evening of the 29th she changed to a westerly course and USCGC Winona (WHEC-65) started a covert surveillance. 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. Winona fired warning shots eight miles off the coast which were ignored so she opened up with her 5 inch/38 caliber gun after receiving return fire from the trawler. The trawler exploded in a huge fireball after taking several direct hits and sank approximately seven miles off the beach. Winona was struck by several pieces of debris from the explosion, however only minor injuries were sustained by the crew during the action.

Action off Nha Trang
The trawler designated Khanh Hoa Province Trawler (map reference #2) was first sighted by Market Time aircraft on 29 February approximately 90 miles east northeast of Nha Trang with a southwesterly course. Surveillance was continued by Market Time vessels until she crossed the 12 mile limit 28 miles northeast of Nha Trang. Ignoring warning to heave to for boarding, the trawler continued on towards the beach. A South Vietnamese Navy patrol boat opened fire on the trawler and it quickly changed course and returned fire. 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 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. Fourteen dead North Vietnamese sailors were recovered the following morning. Rifles, machine guns and rocket launchers; along with considerable ammunition and explosives were recovered from the sunken trawler. The salvage operations extended over 12 days and included the recovery of a 14.5 millimeter antiaircraft gun and 68 cases of ammunition.

Action off Tha Cau River
Forty miles from Chu Lai and six miles off the coast, (map reference #3) USCGC Androscoggin intercepted a third trawler designated in U.S. Navy records as the Quang Ngai Province Trawler. Androscoggin signaled the trawler to identify itself at 0112 but there was no response so Androscoggin shot 5-inch star shells into the air to illuminate the trawler. It was then that the trawler was positively identified as an SL class North Vietnamese trawler so the Androscoggin opened fire at 0120 with 5-inch high explosive naval gunfire and .50 caliber machine guns. The trawler returned fire with a recoilless rifle, laid a smoke screen and turned into Androscoggin's direction but one of the cutter's shells hit the after starboard side, so the trawler turned reversed course and headed for the shore. Two United States Army helicopters were directed engage the trawler with rockets and miniguns at 0129 and after their attack a reduction in the amount of fire coming from the trawler was noticed. At 0140 Point Grey, Point Welcome, PCF-18 and PCF-20 were ordered to take the trawler under fire with mortars and machine guns at close range. Point Welcome struck the trawler twice with 81-millimeter rounds. The trawler then grounded 50 yards off the mouth of the Tha Cau River at 0210. As a result of a civilian junk passing through the battle area the Market Time ships had to cease fire. At 0220, the North Vietnamese tried to scuttle their ship and failed but a second attempt at 0235 succeeded in destroying the vessel in a 500 foot fireball. The explosion caused some damage to the pilothouse of Point Welcome and the deck was littered with debris but no casualties were reported.

Other action on 1 March
USCGC Minnetonka, shadowed the trawler designated as the Binh Dinh Province Trawler (map reference #4) but soon after being detected, the trawler turned around and headed back out to sea without being engaged. It was apparently headed for the Lo Dien area 42 miles north of Qui Nhon. The trawler never got any closer to the coast than 30 miles and after she reversed course was monitored by aircraft until she approached the coast of the Peoples Republic of China.