Staging was then in progress for the invasion of Cape Torokina, Bougainville, Solomon Islands. "Sigourney" escorted the transports of the assault phase to the landing area and then participated in the preliminary bombardment of the landing beaches on 1 November 1943. The ship was under air attack but suffered no damage while splashing two enemy planes. "Sigourney" then participated in resupply operations, with Task Force 31 (TF 31), from Tulagi to the beachhead. On the morning of 17 November, the destroyer was escorting a convoy to Empress Augusta Bay when it was attacked by Japanese planes. The convoy was illuminated by flares and torpedo planes began their runs. The high speed transport, (APD-5), was struck by a torpedo and began to burn furiously. "Sigourney" and "Talbot" (DD-114) were alongside for approximately two hours trying to rescue survivors. "Sigourney" rescued 34 but as the two destroyers were illuminated by the burning transport, they were under constant air attack. Neither was damaged, and "Sigourney" splashed two of the planes.