A throwback to 13 April 1966: An early MkI type U.S. Navy Patrol Boat, River (PBR) near Cat Lo, Vietnam.
(K31134, CU).
First fielded in 1966 (the above craft was brand new) some 250 PBRs served in Operation Market Time (TF 116) and with the RVN in Vietnam during the conflict. In all, 718 were completed in two types (the MkIs were 31 feet while the MkII’s were 32) and they continued to serve in Reserve SBUs as late as the 1990s.