PTF boat


PTF boat, are fast United States Navy patrol boats introduced in the early part of the Vietnam War. The PTF designation was give to 26 boats with four different boat designs. The PTF boats were the Vietnam War "brown water" river boats version of the World War II PT boats. They were heavily armed gunboats that were used by the US Navy and by Special forces. The first two PTF boats were commissioned 21 December 1962. The last two PTF were commissioned on 8 April 1968. PFT boats were replaced by the new Patrol Craft Fast boats that were more widely used in Vietnam. There are five PTF boats that have survived and are in various state of restoration. The "Torpedo Boat, Fast" designation is a hold over from World War II, as PTF boats were not equipped with torpedoes, as they were mostly used in shallow river waters.

History

Following World War II the US Navy had little use for fast attack craft, so almost all of the PT boats were scrapped at the end of the war in 1945. PT boats were not needed during the Korean War. But, as the United States involvement in the Vietnam grew, the Navy saw a need for small combatant boats for the US Navy's "brown water" river operations. In 1962, two prototype Korean War PT boats were put back in to service as PTF-1 and PTF-2. PTF-1 and PTF-2 were used by US Navy Seals for special forces activity. The first SEALs arrived in South Vietnam in 1962 as advisers to the Vietnamese naval commandos. They trained the commandos in maritime infiltration techniques and counterinsurgency warfare. Due to the immediate need for fast attack river craft, the US Navy looked at boats already in service with other nations. The Royal Norwegian Navy had built, a prototype boat, in 1958 by Westermoen Båtbyggeri in Mandal, Norway. HNoMS Nasty was designed by Jan Herman Linge. Her prototype boat was of a wooden hull construction. From this boat the Royal Norwegian Navy built a line of 20 patrol boats. Starting on 1 January 1963, the US Navy took delivery of the first Båtbyggeri boats, with designation Nasty-class patrol boat. A total of 14 Nasty-class patrol boats were built by Båtbyggeri between 1963 and 1965. Båtbyggeri licensed John Trumpy & Sons in Annapolis, Maryland to build seven Nasty-class boats in 1968 and 1970. Some parts of the Trumpy boats were imported from Norway, such as the keel and stem. Sewart Seacraft in Berwick, Louisiana build four PTF boats of the Osprey class in 1968. The PTF boats were used in Vietnam and operated out of Danang, Vietnam. The boats operated in the Mekong Delta. Each PTF boat carried a 12-man team. The PTF boats supplemented the large fleet of aluminum hulled Patrol Craft Fast boats. PTFs were used to carrying out hit-and-run and landing operations. PTFs were also used for United States Army-Navy-SEAL landing, supply drops, base security patrols, harbor security patrols, intelligence gathering, and rescue operations. In December 1965, the US Navy started Operation Game Warden, in which PTF and PCF boats patrolled the major rivers and canals in the Mekong Delta and Rung Sat Special Zone. Most US Navy crews and United States Marine Corps underwent PTF training at the Naval Amphibious Base Coronado. PTF were used by CSS Intelligence Department and Tactical Operations Department, founded April 1, 1964, that were stationed at Lower Base in Tien Sa. CSS also founded two camps: Phoenix va DoDo at Cu Lao Cham. The PTF boats at these camps were from Vietnamese Navy headquarters. Mobile Support Teams provided combat craft support for SEAL operations, as did Patrol Boat, River and Swift Boat sailors. In February 1964, Boat Support Unit One was founded under Naval Operations Support Group, Pacific. Boat Support Unit One crews operated the PTF boat program. Boat Support Unit Two was formed later, both were later renamed Coastal River Squadron 1 and 2. Boat Support Unit One supported the Navy Special Warfare forces in Vietnam. In 1965, Boat Support Squadron One started training PFT and PCF crews for Vietnamese coastal patrol and interdiction operations. In January 1963, US Navy Seabee arrived South Vietnam to build support bases. Seabees built a PFT and PCF base, also a vast support base at Da Nang and Saigon. These bases support the US Navy, and Marine Corps forces, also some Air Force units and some Army units. PFT noted raids were on Đồng Hới, Yên Phú and Sầm Sơn radar sites, Phuc Loi, and Tiger Island. The PTF raids ended in 1971. The PTF boats were take to U.S. Naval Base Subic Bay and formed the MST-3 unit in 1972. The PTF boats were taken out of service in 1976 and 1978, with PTF-13 removed in 1972.

PTF boats

Prototype PTF

The two prototype PTF, PTF-1 and PTF-2 were built for the Korean War in 1951. Both boats a top speed of over from the four Packard W-100 gasoline engines with shafts. PTF-1 and PTF-2 were armed with two Bofors 40 mm guns, two twin cannon, one.50-caliber machine gun, one "Piggyback" 81 mm mortar and one smoke generator. Both arrived in Da Nang, Vietnam in April 1964. In 1965 after a year of service, the two PTF Boats were 14 years old, with no spare parts, and outdated, they were replaced by newer PTF and PCF boats. Both boats were removed from service and used as US Navy targets. PTC-1 was sunk off Vietnam and PTC-2 was sunk off the Hawaiian Islands.
  • PTF-1 was built by Bath Iron Works in Bath, Maine in 1951 as PT-810. PTF-1 had a light displacement of, length of, beam of, and draft of. She was put in service on 24 November 1951 and was struck from the Naval Register 1 November 1959. She was reactivated on 21 December 1962. PTF 1 was sunk as a target in 1965.
  • PTF-2 was built by Trumpy & Sons in Annapolis, Maryland in 1951 as PT-811. PTF-2 had a light displacement of, and length of, beam of, and draft of. She was put in service on 6 March 1951 and was struck from the Naval Register 1 November 1959. She was reactivated on 21 December 1962. PTF-2 was sunk as a target in 1965.

    ''Nasty'' class

The Nasty class were built by two shipyards. Wooden hull PTF boats PTF-3, PTF-4, PTF-5, and PTF-6 arrived at Da Nang, Vietnam in May 1964. PTF-7 and PTF-8 arrived at Da Nang in July 1964. The Nasty-class boats have a displacement of, a length of, a beam of and a draft of. Power is derived from two Napier Deltic Turboblown diesel engines with total of and a top speed of. The Napier Deltic engines were built in England.

Båtbyggeri

, also called A/S Båtservice in the Westermoen Hydrofoil shipyard in Mandal, Norway built 14 Nasty-class patrol boats: PTF-3 to PTF-16.

John Trumpy & Sons

John Trumpy & Sons of Annapolis, Maryland built six Nasty-class patrol boats: PTF-17 to PTF-21, under license from Båtservice.

''Osprey'' class

The Osprey-class PTF boats were built by Sewart Seacraft. Sewart Seacraft built four of the new aluminum alloy hull boats: PTF boats: through PTF-26. Sewart Seacraft was a division of Teledyne Inc.. The chief designer of the Osprey-class patrol boat was Kenneth Hidalgo. Osprey-class boats have a displacement of, a length of, a beam of and a draft of. The Osprey class is powered by two 18-cylinder Napier Deltic diesel engines. Each engine creates and were constructed by D. Napier & Son Ltd. of England. The Osprey-class boats have an empty displacement of.
  • PTF-23 is now a research vessel and diving platform, renamed RV Osprey in St. Augustine, Florida with twin Detroit 12v71 and fuel capacity of. PTF-23 is now heavily modified. For a time she was named RV Angel Lauren as a research vessel. The PTF-23 was refitted in 2002 by TLG of Miami, Florida, then used for treasure surveys until 2004. In 2011 the vessel was used in the Dominican Republic by Anchor Research & Salvage.
  • PTF-24 was sunk as a target 1985 by the US Navy off San Diego, after working with a water jet propulsion conversion testing in the Osprey990 Program with s. PTF-24 served in Vietnam until 1976. In July 1976 she ran aground off San Clemente Island, California.
  • PTF-25 was sunk as a target in 1979 by the US Navy, in Pemblico Sound near Marine Corps Air Station Cherry Point, North Carolina at the BT-11 target range-Piney Island Range for USMC pilot training. PTF-25 was modified to look like a. The vessel was sank as a target at. PTF-25 operated in Vietnam until 1979.
  • is now a museum ship in Golconda, Illinois, still in PTF configuration.

    List of PTF boats

Prototypes

Prototype PTF: and built in 1951.

''Nasty'' class

''Osprey'' class

Surviving boats

Six PTF boats were loss during the war:
  • PTF-4 destroyed on 11 November 1965 on special ops after being grounded.
  • PTF-8 wrecked in August 1966 on special ops, grounded on reef.
  • PTF-9 wrecked 3 March 1966 on special ops, grounded on reef.
  • PTF-14 wrecked 28 April 1966 on special ops, grounded on reef.
  • PTF-15 wrecked 28 April 1966 on special ops, grounded on reef.
  • PTF-16 sunk August 1966 on special ops