English: Seagoing junk (hai fanchuan) in the book "The History of the Ryukyu Kingdom". The ship is likely "Ship of the seal" [Chinese: fēngzhōu 封舟, Japanese: hōbune ほぶね or hansen 帆船, seal ship]; in the Ryukyu Kingdom, they were called “crown ships” [Japanese: kansen/okansen 御冠船; Okinawan: kwanshin/ukwanshin おかんせん] for the crowns of leather they once carried to the old kings of Chūzan.
日期
or 1759
来源
《琉球國志略》 Liúqiú guó zhì lüè
Zhou Huang’s 周煌, Liuqiu guozhi lüe / Annals of Ryukyu 琉球國志略 (1759), pp. 33b-34a.