Overhauled at Mare Island Navy Yard from 6 April to 6 June 1941, the "Altair" returned to Pearl Harbor on 26 June. For the next three months the destroyer tender discharged her duty there until she departed Hawaiian waters on 30 September for the west coast. Pausing briefly at San Diego from 12–18 October, the ship pushed south, transited the Panama Canal on 2–3 November 1941, and arrived at her new duty station, Hamilton, Bermuda, on 11 November 1941, to provide support for destroyers operating on patrols in the North Atlantic.