From a Chinese survey in 1931.

From Chinese surveys to 1929. According to later information the position of all points on this chart should be decreased 12" in Latitude and 19" in Longitude.

From a Japanese survey in 1937 with additions from a Chinese Government survey in 1931 and 1934.

From a Chinese survey in 1933 and 1934 and a Japanese survey in 1937.

From a Chinese survey in 1933.

From Chinese and British surveys to 1928.

From Chinese and British surveys to 1931.

From a Japanese survey in 1937.

From a Japanese survey in 1937.

From the Japanese chart of 1933 with additions to 1939.

From various sources to 1932.

From a Japanese survey in 1937.

From Japanese surveys between 1899 and 1908.

From British surveys in 1903 and 1904 and a Japanese survey in 1937.

From British surveys in 1903 and 1904 and a Japanese survey in 1937.

From Chinese and British surveys to 1934.

From a Bitish survey in 1877.

From British surveys between 1877 and 1886.

From British surveys between 1865 and 1907 with additions to 1945.

From a British survey in 1846.

From a Chinese survey in 1929.

From British surveys between 1888 and 1899 with additions from Chinese surveys to 1928.

From British, Chinese, and Japanese surveys to 1938.

From Chinese Government surveys between 1924 and 1928. Names in magenta are in accordance with the Wade-Giles system of transliteration adopted as standard by the U.S. Board on Geographical Names (1943).

From Chinese and British surveys to 1904 with additions from other sources to 1944. Amoy Dock 345 ft. long and 58 ft. wide has 18 ft. 0 in. on the blocks from August to December. In April the tide may not allow more than 16 ft.