Nimble departed Cleveland, Ohio, 21 September 1944 and proceeded via the St. Lawrence River to the Atlantic and down the coast to Little Creek, Virginia, for shakedown exercises in Chesapeake Bay.

Detached 10 March 1945 she headed north to Philadelphia, Pennsylvania, underwent repairs and alterations and, on 1 April, got underway for the Panama Canal Zone.

She transited the Canal 11 April and, after stops at San Diego, California, Pearl Harbor, Eniwetok, and Guam, arrived in Nakagusuku Wan, Okinawa, 28 June.

In mid-August, following the end of the war, Operation Skagway continued her mine clearance efforts in the East China Sea and Ryūkyūs area.

At the end of the month, "Arcadia" took her to the Yellow Sea and from 2–7 September she cleared the approaches to Jinsen harbor for the entry of the 7th Amphibious Force into Korea for initial occupation duty.