Zi Collection, Upper Volume, Page 15, Entry 08 Pronounced pu (falling tone) gu (entering tone). Synonymous with 䑧 and 䒀. Refers to a boat with a short, deep hull. "Historical Records of the Past Dynasties (Tongjian)" records: Hou Jing summoned Zhang Bin, the person in charge of Shitoujin, and ordered him to lead the 䑡䑰 boats and the haichong boats in the Huai River.