This nautical chart of the Chesapeake Bay, Potomac River Entrance, is a digital version of Chart 16 from the Maryland and Virginia Cruising Guides published by the Williams & Heintz Map Corporation. This chart is also available for print on demand. For more information or to purchase printed copies of the Maryland and Virginia Cruising Guides, visit http://www.whchartbook.com/ or http://whmap.com. This chart was compiled at a scale of 1:80,000 and has been updated with NOAA's Navigation Updates through March 3, 2026.