Hessler approached a priceless 1559 portolan chart on the table before him, sketched in the hand of Mateo Prunes, the Majorcan mapmaker. The nautical map of the Mediterranean and Black seas is ...

namely marine/navigation safety; demand for high quality, timely electronic charts; and the ability to maintain and distribute up-to-date chart databases and new editions, C-Map stresses the fact ...

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 ...

The latest update rolls out a new UI for planning out your navigation, including a big interactive map, more information, and convenient route selection. There's also a new chart in the details ...

Hundreds of men and women at the Naval Oceanographic Office map physical features and collect information in waterways across ...