The USS Nassau (CVE-16) (originally AVG-16 then ACV-16) was laid down 27 November 1941 by the Seattle-Tacoma Shipbuilding Corporation of Tacoma, Washington, as M.C. Hull No. 234; launched 4 April 1942; sponsored by Mrs. G. H. Hasselman, Tongue Point, Oregon; acquired by the Navy 1 May, towed to the Puget Sound Navy Yard, Bremerton, Washington, and converted to an escort aircraft carrier; and commissioned 20 August, Captain Austin K. Doyle in command.
Nassau was one of thirty-seven Tacoma-built C3 CVE's, of which twenty-six went to the Royal Navy. It was one of the ten Bogue class escort carriers that served in the U.S. Navy.
On 10 October, Nassau arrived at the Naval Air Station, Alameda, California, loaded aircraft, and four days later steamed for Pearl Harbor, thence to Palmyra Island, arriving 30 October. For the next four months, she operated between Palmyra and Nouméa, New Caledonia and Espiritu Santo, New Hebrides.
Nassau returned to Pearl Harbor 14 February 1943, embarked personnel and aircraft, and sailed 21 February on a ferry mission to Espiritu Santo. She returned to Pearl Harbor in mid-March and then continued on to Alameda, California. In April, she moved to San Diego and conducted flight training operations, after which she rendezvoused with Task Group 51.1 and steamed for Cold Bay, Alaska with Composite Squadron 21 (VC-21) embarked.