Korean ancient historical maps of Ulluengdo in 1711, Usando (于山島) was drawn as today's Jukdo with Hanjing bamboo fields (海長竹田) and east 5 ri (2.0km) away from Ulleungdo.
Korean ancient historical maps of Ulluengdo in 1711, Usando (于山島) was drawn as east side of Ulleungdo. But Some Japanese claimed, today's Jukdo with Hanjing bamboo fields (海長竹田) and east 5 ri (2.0km) away from Ulleungdo.