During the Vietnam War multiple "Hamilton"-class cutters supported Operation Market Time. The cutters patrolled the South Vietnamese coastline, boarded and inspected suspected North Vietnamese and Viet Cong vessels, conducted naval gunfire support missions, and provided medical assistance to Vietnamese civilians. Throughout their service cutters would also participate in other conflicts and military operations such as Operation Urgent Fury, Operation Vigilant Sentinel, Operation Deny Flight, and Operation Iraqi Freedom.