"From U.S.C. & G.S. surveys in 1914 and 1928, the USS Maury in 1968 and USS Sheldrake in 1966, with additions from surveys by the Philippine C & GS to 1970. Topography from other sources in 1964."
"Soundings in meters."
Includes source diagram.
Inset: Mariveles Harbor. Scale 1:29,383.
Author
United States. National Imagery and Mapping Agency, author.
Title
South China Sea, Philippines, Luzon--west coast, Manila Bay and approaches / prepared and published by the National Imagery and Mapping Agency.
Publisher
[Bethesda, Md.] : National Imagery and Mapping Agency, 1999.
Edition
Seventh edition, Jan. 30, 1999 (Correct through NM 5/99).