USCGC Point Mast (WPB-82316) was an 82-foot Point-class cutter constructed at the Coast Guard Yard

United States Coast Guard Yard

The United States Coast Guard Yard or just Coast Guard Yard is a United States Coast Guard operated shipyard located on Curtis Bay in northern Anne Arundel County, Maryland, just south of the Baltimore city limits. It is the coast guard's sole shipbuilding and major repair facility, and part of the...

 at Curtis Bay, Maryland in 1961 for use as a law enforcement and search and rescue patrol boat. Since the Coast Guard policy in 1961 was not to name cutters

United States Coast Guard Cutter

Cutter is the term used by the United States Coast Guard for its commissioned vessels. A Cutter is or greater in length, has a permanently assigned crew, and has accommodations for the crew to live aboard...

 under 100 feet (30.5 m) in length, it was designated as WPB-82316 when commissioned and acquired the name Point Mast in January 1964 when the Coast Guard started naming all cutters longer than 65 feet (19.8 m).

Construction details

Point Mast was built with a mild steel hull and an aluminum superstructure that could accommodate an 8 man crew. She was powered by two 600 horsepower VT600 Cummins diesel main drive engines and had two five bladed 42 inch propellers. The main drive engines were later replaced by 800 horsepower VT800 Cummins engines. Longitudinally framed construction was used to save weight. Water tank capacity was 1550 gal and fuel tank capacity was 1840 gal at 95% full. Frozen food storage was 23 ft3. Accommodations for a 13 man crew were installed for Vietnam service.

History

After delivery in 1961, Point Mast was assigned a homeport of Long Beach, California

Long Beach, California

Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...

, where she served as a law enforcement and search and rescue patrol boat.

At the request of the United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

, in April 1965, she was alerted for service in Vietnam

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

 and assigned to Coast Guard Squadron One in support of Operation Market Time

Operation Market Time

Operation Market Time was the United States Navy’s effort to stop troops and supplies from flowing by sea from North Vietnam to South Vietnam during the Vietnam War...

 along with 16 other Point class cutters. While the crew completed overseas training and weapons qualifications at Coast Guard Island

Coast Guard Island

Coast Guard Island is in the Oakland Estuary between Oakland and Alameda, California. The island is situated in the historic Brooklyn Basin, now known as Embarcadero Cove. It is within the Alameda city limits, but is accessible, by car, only via a bridge to Dennison Street in Oakland.The Island...

 and Camp Parks, California

Parks Reserve Forces Training Area

Parks Reserve Forces Training Area is a United States Army facility located in Dublin, California that is currently a semi-active mobilization and training center for Army Reserve Component personnel to be used in case of war or natural disaster....

, Point Mast was loaded onto a merchant ship, and transported to Subic Bay

Subic Bay

Subic Bay is a bay forming part of Luzon Sea on the west coast of the island of Luzon in Zambales, Philippines, about 100 kilometers northwest of Manila Bay. Its shores were formerly the site of a major United States Navy facility named U.S...

, Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 in May 1965 where she was refit for combat service. Shipyard modifications included installation of new single-sideband radio equipment, additional floodlights, small arms lockers, bunks, additional sound-powered phone circuits, and the addition of four M-2 machine guns. The original bow mounted machine gun was replaced with a combination over-under .50 caliber machine gun/81 mm trigger fired mortar that had been developed by the Coast Guard for service in Vietnam. For service in Vietnam, two officers were added to the crew complement to add seniority to the crew in the mission of interdicting vessels at sea.

Point Mast was assigned to Division 11 of Squadron One to be based at An Thoi, a small fishing village on the southern tip of Phu Quoc Island along with , , , , , , and . . After sea trials, the Division left Subic Bay for Phú Quốc on 17 July 1965 in the company of , their temporary support ship. After almost two weeks at sea, they arrived at their new duty station on 1 August and began patrolling the waters in the Gulf of Thailand

Gulf of Thailand

The Gulf of Thailand , also known in to Malays as Teluk Siam literally meant Gulf of Siam, is a shallow arm of the South China Sea.-Geography:...

 near the Cà Mau Peninsula

Ca Mau Peninsula

peninsula makes up the southern tip of Vietnam. It is in Ca Mau province, and lies between the Gulf of Thailand to the west and the South China Sea to the east....

. Duty consisted of boarding Vietnamese junks to search for contraband weapons and ammunition and check the identification papers of persons on board. During September 1965, , a repair ship outfitted for the repair of WPB's relieved the USS Floyd County. Also during this time, the WPB's were directed to paint the hulls and superstructures formula 20 deck gray to cover the stateside white paint. This increased the effectiveness of night patrols.

Point Mast assisted in the recovery of a damaged and sunken Swift

Fast Patrol Craft

Patrol Craft Fast , also known as Swift Boats, were all-aluminum, long, shallow-draft vessels operated by the U.S. Navy, initially to patrol the coastal areas and later for work in the interior waterways as part of the Brown Water Navy to interdict Vietcong movement of arms and munitions,...

 boat on 14 February 1966. She towed it and the LCM

Landing Craft Mechanized

The Landing Craft Mechanized or Landing Craft Mechanical was a landing craft designed for carrying vehicles. They came to prominence during the Second World War when they were used to land troops or tanks during Allied amphibious assaults....

 holding the crane supporting the stricken boat nine miles to deeper water where the repair ship USS Krishna could recover the boat from the water.

On 15 June 1970, Point Mast was turned over to the Republic of Vietnam Navy

Republic of Vietnam Navy

The Republic of Vietnam Navy was the naval force of the former Republic of Vietnam from 1955 to 1975. The early fleet consisted of boats from France. After 1955 and the transfer of the armed forces to Vietnamese control, the fleet was supplied from the United States...

 as part of the Vietnamization

Vietnamization

Vietnamization was a policy of the Richard M. Nixon administration during the Vietnam War, as a result of the Viet Cong's Tet Offensive, to "expand, equip, and train South Vietnam's forces and assign to them an ever-increasing combat role, at the same time steadily reducing the number of U.S....

of the war effort and recommissioned as RVNS Đằm Thoại (HQ-721).

External links

• The Coast Guard's Vietnam Augusta State University website