United States, Hydrographic Office. From surveys by the Hai Ho Conservatory Commision between 1905 and 1930 ; Depths on the bar, inside the 12 ft. curve, are from the 1921 Report of t... U.S. Navy Hydrographic Office,.
Drawn and Engraved for the Directory & Chronicle ; John Bartholomew & Co., Edinr. Coordinates approximate and based on Greenwich meridian. Shows ro... [The Hongkong Daily Press Office] :.