**NASD Cua Viet** was a United States Navy unit established during the Vietnam War as part of the Naval Advisory Support Detachment (NASD) system. Located at the Cua Viet River Base near the mouth of the Cua Viet River in Quang Tri Province, South Vietnam, the unit played a key role from 1967 to 1972 in supporting coastal and riverine operations. Its primary mission was to facilitate the logistics and movement of supplies for U.S. Marine and Army units, as well as to support South Vietnamese forces in the area. NASD Cua Viet also contributed to interdiction operations against North Vietnamese supply lines along the DMZ and provided vital naval gunfire support during major engagements, including the defense of Quang Tri City in 1972.
