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"Nasty" patrol boats (PTF3) (1962 - 1969)


Photo



PTF6 1973

Ships


Names Builders Commissioned Losses Transfers Discarding

PTF3 - 22

Batservice, Mandal, Norway: PTF3 - 16

Trumpy, Annapolis: PTF17 - 22

1962: PTF3, 4

1964: PTF5 - 16

1968: PTF17 - 20

1969: PTF21, 22

1970: PTF3, 5 - 7 (all 2nd time)

PTF4 (4/11/1965), PTF8 (16/6/1966), PTF9 (7/3/1966), PTF14 (22/4/1966), PTF15 (22/4/1966), PTF16 (19/8/1966)

South Vietnam, 1/1966: PTF3, 5-7 (all returned 1970)

1972: PTF13

1977: PTF3 (2nd time), PTF6 (2nd time), PTF7 (2nd time), PTF12

1980: PTF18, 19

1981: PTF5 (2nd time), PTF10, 11, 17, 20-22



Technical data


Displacement standard, t80
Displacement full, t85
Length, m

24.5

Breadth, m7.50
Draught, m1.20
No of shafts2
Machinery2 Napier-Deltic diesels
Power, h. p.6200
Max speed, kts38
Fuel, tdiesel oil 17
Endurance, nm(kts)600(25)
Armament1 x 1 - 40/60 Mk 3, 2 x 1 - 20/70 Mk 10, 1 x (1 - 81/12 M29 mortar + 1 - 12.7/90)
Electronic equipmentradar
Complement17


Graphics


<i>PTF6 </i>1973
PTF6 1973
<i>PTF17 </i>1972
PTF17 1972


Ship project history


These Norwegian-designed torpedo-boats were acquired by the US Navy for 'unconventional operations'. PTF3-16 were built by Batservice A/B, Mandal, Norway, and the hulls were shipped to die United States for outfitting. During the Vietnam War, these boats were used to carry Vietnamese special forces attacking North Vietnam.

The Trumpy boats were built under the FY67 programme, the Norwegian units having been acquired under FY64.

Armament varied in all these craft; originally it was reported as two 40mm and two single 20mm, but the forward 40mm was later replaced by die combination 81mm mortar/12.7mm machine-gun of many Vietnam-era combatants.

Modernizations


late 1970s, may be some: - 1 x (1 - 81/12 M29 mortar + 1 - 12.7/90); + 1 x 1 - 40/60 Mk 3

Naval service


No significant events.