Segwarusa was allocated to the 5th Naval District and based at Norfolk, Virginia. She was reclassified as YTB-365 on 15 May 1944 and as YTM-365 on 24 November 1961. She provided fire-fighting, tug, and salvage services to ships and installations in the Norfolk area throughout her long career. Segwarusa was struck from the Navy list on 1 January 1974, sold for scrap to Marine Power & Equip. Co., Seattle, Washington, and removed from Navy custody on 25 June 1974.