An 80-year-old former crew member of a tuna boat exposed to radiation from a U.S. hydrogen bomb test 60 years ago has vowed to continue a personal crusade against nuclear energy for the rest of his life despite suffering a series of illnesses, including liver cancer.

Matashichi Oishi was aboard the Fukuryu Maru No. 5 when it was exposed to nuclear fallout from a U.S. hydrogen bomb test on Bikini Atoll, part of the Marshall Islands in the Northern Pacific Ocean, on March 1, 1954. At the time, he was fishing about 160 km east of the atoll.

Oishi has written articles and given more than 700 speeches about his experiences, including his fears of the "death ash," notably documented in the book "The Day the Sun Rose in the West."