 Arriving off Kamimbo , Hashimoto 's force loaded 1 @,@ 972 soldiers by 00 : 03 on 8 February , unhindered by the U.S. Navy . For an additional 90 minutes , destroyer crewmen rowed their boats along the shore calling out again and again to make sure no one was left behind . At 01 : 32 , the Reinforcement Group left Guadalcanal in its wake and reached Bougainville without incident at 10 : 00 , completing the operation . 
