NAVYPEDIA

Photo

PBR Mk II

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
31RP671-679 31RP6710-6781	United BB, Bellingham: 31RP671-679, 31RP6710-6781	1967-1968: 31RP671-679, 31RP6710-6781	?	1973, South Vietnam: nearly all	late 1980s: 8 units of Mk II and Mk III types 1990s: 27 units of Mk II and Mk III types

Technical data

Displacement standard, t
Displacement full, t	7.1
Length, m	9.70
Breadth, m	3.60
Draught, m	0.80
No of shafts	2 water-jet pumps
Machinery	2 General Motors diesels
Power, h. p.	432
Max speed, kts	25
Fuel, t	diesel oil 0.6
Endurance, nm(kts)
Armament	1 x 2 - 12.7/90, 1 x 1 - 12.7/90, 1 x 1 - 60/12 M19 mortar, 1 x 1 - 40/10 M19 grenade launcher
Electronic equipment	none
Complement	4

Graphics

Project history

The Patrol Boat, River was smaller than the PCF, with an open-topped conning position, and had a fiberglass hull lined with plastic foam; it was propelled and steered by water-jets, for an extremely shallow draft (0.9m compared to 1.2m for a Swift). 

Modernizations

None.

Naval service

The great majority of US PBRs were transferred to South Vietnam. The PBRs were based afloat, LST846, 821, 838 and 786 being converted to support them. In 1994, twenty-seven PBR Mk II remained. Some had been used during the 1991 Gulf conflict.

© Ivan Gogin, 2015