Ironbottom Sound
was sailing on 29 November 1942 with TF 67 to intercept a Japanese destroyer-transport force expected off Guadalcanal the next night. Just before midnight of the 30th, the American ships transited Lengo Channel and headed past Henderson Field on Guadalcanal as the Japanese task group steamed on a southerly course west of Savo Island to enter "Ironbottom Sound".