Depths shown by isolines and soundings.
Relief shown by contours and spot heights.
"From French and Japanese surveys to 1939 and British Admiralty charts to 1962; topography and additional hydrography from other sources to 1967."
Place names in romanized Vietnamese and Chinese with glossary in English.
"Copyright 1995 by the United States Government. No copyright claimed under Title 17 U.S.C."
"Soundings in meters."
Includes index to next larger scale charts and source diagram.