Matashichi Oishi, a former crew member of a Japanese tuna fishing boat that was exposed to radioactive fallout from a 1954 U.S. hydrogen bomb test in the Pacific, died of aspiration pneumonia earlier this month, a foundation preserving the boat said Sunday. He was 87.
Oishi, who died at a hospital in Kanagawa Prefecture on March 7, was among the fishermen exposed to nuclear fallout when the United States conducted its largest-ever nuclear weapon test at Bikini Atoll in the Marshall Islands on March 1, 1954.
A native of Shizuoka Prefecture, Oishi began working aboard the fishing boat Fukuryu Maru No. 5, also known as Lucky Dragon No. 5, in 1953, and subsequently suffered cancer and many other illnesses following the Castle Bravo test.