Utsuro-bune, the "Hollow Ship" (1803)
In February 1803, on the coast of Hitachi Province, Japan, fishermen discovered a circular, saucer-shaped vessel washed ashore, its hull made of wood and metal fitted with portholes. Inside was a young woman in unfamiliar clothing, pale-skinned with red hair, unable to communicate, clutching a small box she refused to let anyone touch. After examining her, the villagers returned her and her strange craft to the sea.
Witnesses
local fishermen
Why it endures
One of the very first illustrated accounts in the world describing a saucer-shaped craft, documented across at least four separate Edo-period Japanese texts, nearly a century and a half before the modern UFO era.
Official version (contested)
Modern researchers remain divided between viewing it as pure folklore and a possible literary embellishment of a real event, such as a shipwreck, with no definitive conclusion ever established.