how they work

Chart Image Size: 16⅛" x 23¼"

ATL 108 are downloaded from the CHS with corrections and minor tweaks  printed by ProStar Publications

Chart Image Size: 47⅛" x 33"

Face of Vectormaster permits rapid solution of problems involving vectors

NGA Chart 72: Indian Ocean-Western Portion Afoot & Afloat how they workScale: 1: 10,000,000 Captain's Supplies is a Print on Demand nautical chart dealer for NGA Charts. Charts are printed on high quality heavy paper with waterproof ink. Other options available. NGA charts are printed using the most recent data provided by the National Geospatial Intelligence Agency (NGA). Much of this data may no longer be current. Boaters are advised to consult the "Corrected through NM ## ##" note in the margin of the chart for