Accidents involving miniboats, which require no license or qualification to operate in Japan, are on the rise.
According to the 4th Regional Coast Guard Headquarters, which covers Aichi and Mie prefectures, there were eight cases in 2014, up from two the year before and the most ever reported in the region.
The total number of miniboat accidents in the country also reached an all-time high, with 58 last year.