She was assigned to the 9th Naval District and served out of St. Louis, Missouri and Chattanooga, Tennessee where she serviced aids to navigation for 650 miles of the Tennessee River above the Kentucky Dam
The stern paddlewheeler USCGC Cottonwood WAGL-209: Originally an Army Corps of Engineers' river tug named Le Claire that was built in 1915. She was acquired by the Lighthouse Service in 1938 and renamed Cottonwood. She was stationed at St. Louis and then Chattanooga while in Coast Guard service. She serviced ATON for 650 miles of the Tennessee River above the Kentucky Dam. She was decommissioned in 1946 and sold the following year.