The USCGC Morgenthau (WHEC-722), was the eighth of twelve 378-foot dual-powered turbine/diesel Hamilton-class high endurance cutters (WHECs) built by Avondale Shipyards in New Orleans, Louisiana. The Coast Guard commissioned the Morgenthau on March 10, 1969. After 48 years of continuous service the U.S. Coast Guard decommissioned the Morgenthau on April 18, 2017, and the ship was sold to Vietnam. On 27 May 2017 the Vietnam Coast Guard commissioned the former cutter as patrol craft CSB-8020.

In the 1960s-1970s the "jet-powered" Hamilton-class cutters were state-of-the-art and technologically innovative. In 2011 the Coast Guard acknowledged its Hamilton-class cutters had far exceeded their planned service life and phased them out over the next ten years, replacing them with National Security Cutters.

In the 1960s the most distinctive aspect of these Hamilton-class cutters were the twin turbine engines capable of propelling the cutter from 0 to 30+ knots in 60 seconds (and with its large variable-pitch propellers, coming to a full stop equally fast). Moreover, due to the Cold War, Hamilton-class cutters were configured for anti-submarine warfare (ASW): including the ability to detect, track, and destroy submarines.

Each 378' cutter had a helicopter flight deck, and retractable hangar within which to store a helicopter for missions. Other features noteworthy at the time included a variable-pitch propeller and bow thruster, allowing the ship to berth horizontally to a dock. As modern ships the cutters had comfortable crew and officer quarters, and the capability to stay at sea for 45 days.

Over its 48-year career (1969-2017) Morgenthau received numerous awards, commendations, and unit citations, including a Navy Meritorious Unit Commendation in 1971 during the Vietnam War, Combat Action Ribbon to the 1971 Captain and crew, and multiple Battle "E" (Battle Effectiveness Award) for the ship's demonstrated excellence and superior achievement during certification and qualification competitions.

The Morgenthau had two crests and unit motto (commonly referred to as "unit patches"). When commissioned, Morgenthau had a shield style crest, with the motto "Efficiency and Honor is Our Destiny." When in 1977 Morgenthau moved to the San Francisco Bay Area and homeported in Alameda, the crest changed to a circular style with the Latin motto Decus Pacifici (although the Latin word decus can have different meanings, the US Coast Guard translates the motto as "Pride of the Pacific").