After participating in the bombing exercises, "Shawmut" returned to her routine as an aircraft tender for the rest of summer of 1921. She entered the Philadelphia Navy Yard for an overhaul on 31 October, where she remained until 5 January 1922. She then returned to her primary duties as a minelayer but also continued to provide services to Navy planes. The duties took her back to the Caribbean, as well as operating along the US east coast for battle practice, gunnery and mining exercises.