NAVYPEDIA

Photo

PBR Mk II

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
31RP681-689 31RP6810-6878 31RP691-699 31RP6910-6918 31RP701-709 31RP7010-7020 31RP711-719 31RP7110-7120 31RP721-728 31RP731-739 31RP7310	United BB, Bellingham: 31RP681-689, 31RP6810-6878, 31RP691-699, 31RP6910-6918, 31RP701-709, 31RP7010-7020, 31RP711-719, 31RP7110-7120, 31RP721-728, 31RP731-739, 31RP7310	1968: 31RP681-689, 31RP6810-6878 1969: 31RP691-699, 31RP6910-6918 1970: 31RP701-709, 31RP7010-7020 1971: 31RP711-719, 31RP7110-7120 1972: 31RP721-728 1973: 31RP731-739, 31RP7310	?	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