The U.S. Navy purchased Patrol from the Coast Guard on 11 April 1918 for service during World War I and commissioned her as the patrol vesselUSS Patrol. She spent her Navy career on patrol duties based at New York City.
United States Coast Guard service 1919-1940
The Navy returned Patrol to the Coast Guard on 28 August 1919, and she resumed her duties in New York Harbor as USCGC Patrol. In 1923, she was transferred to Washington, D.C. She returned to New York in the 1930s, was renamed USCGC AB-38 in 1938, and was decommissioned in 1940.