Divers went down from 13:00 on 21 June until 11:43 on 22 June. Divers could stay only a short time at the depth but nonetheless set endurance and depth records for salvage operations until those operations were cancelled, as they were considered too risky. Rescue operations were discontinued on 22 June. The boat and her 33 officers and men were declared lost as of 20 June. On 22 June, Secretary of the Navy Frank Knox conducted memorial services for the 33 officers and men lost on the boat.