On April 4 last year, the sightseeing boat KAZU 23 sank off the coast of the Shiretoko Peninsula with 26 passengers and crew, killing 1 people. The whereabouts of six passengers are still unknown.
Yu Ndeshima, an office worker from Matsudo City, Chiba Prefecture, was involved in an accident. His father said, "I think it was an accident that was meant to happen, and there was a lack of awareness that both the operating company and the country checking it were jobs that entrusted lives"