Usan-do (, ) is a historical name for an island in the Sea of Japan described in Korean records. It was part of the ancient state of Usan-guk, but its exact identity is disputed. It may refer to: Jukdo, a Korean island 4 km east of Ulleungdo. The Liancourt Rocks, a disputed group of islets now known as Dokdo in Korea and Takeshima in Japan.
Usan-do (, ) is a historical name for an island in the Sea of Japan described in Korean records. It was part of the ancient state of Usan-guk, but its exact identity is disputed. It may refer to: Jukdo, a Korean island 4 km east of Ulleungdo. The Liancourt Rocks, a disputed group of islets now known as Dokdo in Korea and Takeshima in Japan.
== Old Korean maps of Usan-do ==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).