 On one occasion during the fighting in the Aleutians in 1942-1943 she fought off an attacking Imperial Japanese Navy aircraft.In 1944  and 1945 she continued to operate in support of U.S. Navy World War II hydrographic needs in the Aleutians until Japan surrendered in August 1945, bringing the war to a close.Postwar, she spent the 1946 field season in the Aleutians cooperating with the Coast and Geodetic Survey ships USC&GS "Surveyor" and USC&GS "Derickson" in extending an arc of triangulation from Kiska to Attu, completing an arc extending across the continental United States, Territory of Alaska, and Aleutians, and conducted triangulation, topographic, and hydrographic surveys in the coastal waters north and south of Attu and in other parts of the Near Islands.