The capture of a Japanese mini-submarine in the Aleutian Islands occurred during World War II in 1942, not 1943. This event took place on June 6, 1942, when the U.S. Navy discovered and captured a Japanese Type A Ko-hyoteki-class midget submarine that had run aground on Akutan Island in the Aleutian chain of Alaska. The submarine was discovered by the crew of the U.S. Coast Guard cutter, USCGC Casco.
As of 2021, there haven’t been any reports of a similar incident involving the capture of a Japanese mini-submarine in the Aleutian Islands. However, the area remains historically significant due to its strategic importance during World War II, particularly as a battleground between the United States and Japan in the Pacific theater.