NAVYPEDIA

Photo

Ships

No	Name	Yard No	Builder	Laid down	Launched	Comm	Fate
95PB681	PTF23		Sewart Seacraft, Berwick			1968	stricken 1986
95PB682	PTF24		Sewart Seacraft, Berwick			1968	stricken 1985
95PB683	PTF25		Sewart Seacraft, Berwick			1968	stricken 1979
95PB684	PTF26		Sewart Seacraft, Berwick			1968	stricken 1990

Technical data

Displacement standard, t	80
Displacement full, t	105
Length, m	28.8
Breadth, m	7.00
Draught, m	2.10
No of shafts	2
Machinery	2 Napier-Deltic diesels
Power, h. p.	6200
Max speed, kts	40
Fuel, t	diesel oil
Endurance, nm(kts)
Armament	1 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 equipment	radar
Complement	19

Graphics

Project history

Under FY67 the Navy bought four 'Ospreys' (PTF23-26) from Sewart Seacraft of Berwick, Louisiana. They were a commercial, aluminium (rather than wooden) hulled design, sometimes described as improved versions of the 'Nasty'. Although reportedly not completely successful, they were not sold until the 1990s. (PTF25 was experimentally fitted with gas turbines in 1978, stricken in 1979.) They could be configured as torpedo-boats, minelayers, or submarine chafers.

Modernizations

1978, PTF25: was re-engined with gas turbines.

Naval service

No significant events.

Ivan Gogin, 2015