6 maps : color ; 118 x 85 cm or smaller, on sheets 89 x 142 cm or smaller
Relief shown by gradient tints and spot heights. Depths shown by contours. Standard map series designation: Series 1209. Each sheet includes text, notes, glossary, scale-departure diagram and graph, scale conversion table, and index map. Numbered "6800/8/83/822133M" to "7500/7/83/822134M."