Relief shown by contours and spot heights. Depths shown by isolines and soundings.

Includes general world nautical charts, international, great circle sailing and polar charts, great circle tracking charts, Loran-C plotting charts, display plotting charts, visc. plotting sheets, diagrams, Mediterranean Sea wall charts, sailing directions and limits and more.

Includes various issues of some sheets.

Soundings in fathoms or meters.

Updated by Notice to Mariners.

Produced and published by various agencies including the National Oceanic and Atmospheric Administration, the National Imagery and Mapping Agency and the Defense Mapping Agency.

Some sheets include insets.