Rubuta ci gaba don wannan sakin layi - "Ryou-Un Maru", jirgin ruwan kamun kifi a cikin jirgin ruwan dillalan Japan, an gina shi ne a farkon shekarar 1982. Kamfanin kamun kifi ne da ke Hokkaido kuma ana amfani da shi don shrimping ko squidding. Bayan dogon aikin sabis mai mallakar jirgin ya yanke shawarar cewa ya tsufa don ci gaba da amfani da shi kuma ya sa shi a lardin Aomori a Honshu har sai an sayar da shi. Lokacin da girgizar kasa da tsunami na Tōhoku
a watan Maris na shekarar 2011, "Ryou-Un Maru" ya yantar da kansa kuma ya tashi.