“United States Nasty-class patrol boat”的意思、由来-开放百科全书

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United States Nasty-class patrol boat

释义

Construction
Service history
List of vessels
Notes
References
External links

{{Use American English|date=July 2017}}{{Use dmy dates|date=July 2017}}Nasty-class patrol boat}}>{{Infobox ship image

Ship image=Norwegian MTB Nasty.jpg

Ship caption=Norwegian MTB Nasty
}}{{Infobox ship class overview

Name=

Builders=Westermoen Båtbyggeri, Mandal, NorwayJohn Trumpy & Sons, Annapolis, Maryland

USA}}

Class before=

Class after=

Subclasses=

Cost=

Built range=1962–1968

In service range=

In commission range=1962–1981

Total ships building=

Total ships planned=

Total ships completed= 20

Total ships cancelled=

Total ships active=

Total ships laid up=

Total ships lost=

Total ships retired=

Total ships preserved=
}}{{Infobox ship characteristics

Hide header=

Header caption=^[1]

Ship type=Patrol boat

80|LT|t|0|lk=in|abbr=on}}

80|ft|4|in|m|abbr=on}}

24|ft|7|in|m|abbr=on}}

3|ft|10|in|m|abbr=on}}

6200|bhp|0|abbr=on}}

38|kn|lk=in}}

Ship range=

Ship endurance=

Ship complement=17 men

Ship armament=*1 × Bofors 40 mm gun

2 × 20 mm gun
1 × "Piggyback" 81 mm mortar/0.50 machine gun^[1]

Ship armour=

Ship notes=
}}

For other ship classes of the same name see Nasty-type patrol boat

The Nasty class of fast patrol boats were a set of 20 vessels built for the United States Navy to a Norwegian design and purchased in the 1960s for covert operations during the Vietnam War. Following the conflict they remained in service until the early 1980s.

Construction

Following World War II the US Navy had little use for fast attack craft, and most of her PT boats were disposed of shortly after VJ Day.

With the involvement in the Vietnam War the Navy saw a renewed need for small combatant craft for "brown water" operations, and they approached the Norwegian Westermoen company, which had built a prototype fast attack boat, the {{HNoMS|Nasty||2}}, and was currently building a set of 12 vessels (the {{sclass-|Tjeld|patrol boat}}s) for the Royal Norwegian Navy.

The USN ordered two vessels, which were delivered in 1962 and were designated PTF 3 and PTF 4.

This was followed in 1966 with an order for 14 more (PTF's 5-16), with an agreement for a further six to be built under licence by Trumpy of Annapolis. Trumpy's had been a major contributor to the USN's PT fleet in World War II, and had been one of just four yards asked post-war to build a prototype PT boat to consolidate wartime experience and the lessons learned.

The Norwegian boats were delivered in 1964, and the Trumpy boats three years later.^[2]

A subsequent improved version, the Osprey class, was larger with aluminum instead of wooden hulls, of which four were operated by the U.S.Navy, assigned hull numbers PTF-23 through PTF-26.^[3]

Service history

All vessels of the class saw action during the war in Vietnam, being employed by the special forces for clandestine operations along the coast of North Vietnam. During these operations six boats were lost; one (PTF 4) in 1964 and five more in 1966. In 1966 four boats were transferred to the South Vietnamese Navy, though they were returned and re-commissioned in 1970.

With the end of the conflict the need for these boats evaporated, and the high maintenance costs of such vessels militated against retaining them. Most were disposed of in the 1970s and all were gone by 1981.^[2]

List of vessels

Number	Date of acquisition	Builder	Notes^[2]
PTF 3	December 1962	Westermoen	Transferred to South Vietnamese Navy January 1966, returned 1970. Stricken 1977
PTF 4	December 1962	Westermoen	Sunk 1964
PTF 5	March 1964	Westermoen	Transferred to South Vietnamese Navy January 1966, returned 1970. Stricken 1981
PTF 6	March 1964	Westermoen	Transferred to South Vietnamese Navy January 1966, returned 1970. Stricken 1977
PTF 7	March 1964	Westermoen	Transferred to South Vietnamese Navy January 1966, returned 1970. Stricken 1977
PTF 8	March 1964	Westermoen	Sunk 1966
PTF 9	September 1964	Westermoen	Sunk 1966
PTF 10	September 1964	Westermoen	Stricken 1981
PTF 11	September 1964	Westermoen	Stricken 1981
PTF 12	September 1964	Westermoen	Stricken 1977
PTF 13	September 1964	Westermoen	Stricken 1981
PTF 14	September 1964	Westermoen	Sunk 1966
PTF 15	September 1964	Westermoen	Sunk 1966
PTF 16	September 1964	Westermoen	Sunk 1966
PTF 17	1967	Trumpy	Stricken 1981
PTF 18	1967	Trumpy	Stricken 1980
PTF 19	1967	Trumpy	Stricken 1980
PTF 20	1967	Trumpy	Stricken 1981
PTF 21	1968	Trumpy	Stricken 1981
PTF 22	1968	Trumpy	Stricken 1981

Notes

1. ^William R. Wells II, The United States Coast Guard's Piggyback 81mm Mortar/.50 cal. machine gun, Vietnam Magazine, August 1997
2. ^¹²³Conway p623
3. ^http://www.ptfnasty.com/ , and http://libertymaritime.com/index.htm/

References

Gardiner, Robert; Chumbley, Stephen Conway's All The World's Fighting Ships 1947–1995 (1995) Naval Institute Press, Annapolis {{ISBN|1-55750-132-7}}

External links

The "Nasty Class" Fighting Boat (Dan Withers)
[https://www.historynet.com/arsenal-navys-nasty-class-patrol-boats.htm The Navy’s Nasty Class Patrol Boats] (HistoryNet.com, World_History_Group)

4 : Torpedo boats of the United States Navy|Napier Deltic|1960s ships|Ships built in Mandal, Norway

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