A third modification was as a transport for PBRs (patrol boat, river) from repair stations at Da Nang (YR-71) and Tan My (PBR Mobile Base 1) to outlying points at Cua Viet, and the Cua Dai rivers.
A fourth modification was the Army Version for Vietnam Rivers Logistic with a live aboard cabin and crewed by 6 men consisting of Coxswain, Assist.