I photographed these Vietnam-era PBR boat (Patrol Boat, River) in Olympia and Alabama
PBR Mk. II J-7844
This was identified as the last PBR built.
Olympia 2022
PBR Mk. II 31-RP-7331
Oddly enough, there has been signage with this boat in Alabama that refer to it as PBR 750, and a PBR Mk. I example I photographed in Olympia wore a hull number 750. Not sure if there is a connection or if the 750 has historical significance (like PT-109) but photo dates confirm they cannot be the same individual boat.