CHAPU, a port of China on the north shore of Hangchow bay 39' N., 121° 6' E.). It is built on a series of low hills and was long an out-port of Hangchow. Being the only possible har bour site on Hangchow bay near to Shanghai (5o m. distant), Chapu has possibilities of becoming a relief out-port for this, the commercial metropolis of China.