The following year, "Beaver" was ordered east to tend Atlantic Fleet submarines. Departing the Hawaiian Islands on 18 February 1920, she transited the Panama Canal and arrived at Cristóbal, Colón on 25 March. From there, she proceeded to Kingston, Jamaica, and Havana, Cuba, before arriving at Hampton Roads, Virginia on 10 April. After repairs at the Philadelphia Navy Yard from 12 April-14 May followed by two weeks of liberty at New York, the tender then escorted submarines , , , and from New London to the Panama Canal from 3–27 June.