Koichi Baban_Sanusi Kaneganese,I think Mr. Kim was just listing all the hosritical information he had on Ulleungdo, including the old reference that Usando was to the west of Ulleungdo. I think you have to look at his first sentence to find out where he thought Usando really was. This was the first sentence:鬱陵島在本縣正東海中右于山Here is my translation: "Ulleungdo is in the middle of the sea due east of this Hyeon and to the west of Usan."The character 右 also means "west."