The Battle of Sagami Bay was a World War II anti-shipping raid off the tip of Bōsō Peninsula on the night of 22 July 1945. It was the last surface action of the war. Destroyer Squadron 61 (DesRon 61) of the U.S Navy engaged with a Japaneseconvoy consisting of two freighters escorted by subchaser No. 42 and minesweeper No.1. The Americans sank a freighter, No.5 Hakutetsu Maru of 800 long tons (810 t), and damaged another freighter, Enbun Maru of 6,919 long tons (7,030 t). The Japanese escorts were not damaged.