Utsuro-bune (Patreon)

 Utsuro-bune (うつろ舟 'hollow ship'), also Utsuro-fune, and Urobune, refers to an unknown object that allegedly washed ashore in 1803 in Hitachi province on the eastern coast of Japan.When defining Utsuro-bune, the bune part means "boat" while Utsuro means empty, or hollow. Accounts of the tale appear in three texts: Toen shōsetsu (1825), Hyōryū kishū (1835) and Ume-no-chiri (1844).