Aids to navigation: U.S. waters have more than 40,000 buoys, beacons, and lights that mark dangers, and show safe water and limits of dredged channels.NOAA nautical charts depict them all, using ...

The Nautical Chart Spain Production: A Universal release of an Enrique Cerezo, Origen, New Atlantis production with the participation of TVE. (International sales: TVE, Madrid.) ...

The rare 14th-century portolan chart is worth $7.5 million. Robert Gauthier / Los Angeles Times / Getty Images. Last fall, Christie’s auctioned off a “highly unusual” nautical map as part of ...

As a result, the reef was incorrectly placed in the [digital nautical chart],” Long told Greenert. In 2011, NGA obtained survey data that corrected this positioning, ...