Kochi bereaved family attends local ceremony for first time 70 years after 'Bikini Incident' This year marks 70 years since the so-called "B bikini Incident," in which the Japanese fishing boat Daigo Fukuryu Maru and a fishing boat in Kochi Prefecture were also exposed to radiation. On March 1, the 70th anniversary of the hydrogen bomb test, a ceremony will be held in Majuro, the capital of the Marshall Islands, with the participation of islanders.