Utsuro-bune (虚舟, ‘hollow ship’), also Utsuro-fune, and Urobune, was 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).
According to legend, an attractive young woman aged 18-20 years old, arrived on a local beach aboard the “hollow ship” on February 22, 1803. Fishermen brought her inland to investigate further, but the woman was unable to communicate in Japanese. She was very different from anyone else there. The fishermen then returned her and her vessel to the sea, where it drifted away.
The first historical investigations of the Utsuro-bune incident were conducted in 1844 by Kyokutei Bakin (1767–1848). Kyokutei reports about a book called Roshia bunkenroku (魯西亜聞見録, ‘Records of seen and heard things from Russia’), written by Kanamori Kinken. The book describes traditional Russian clothes and hairstyles and mentions a popular method to dust hair with white powder. It also mentions that many Russian women have natural red hair and that they wear skirts, similar to that of the lady of the legend.