Nautical charts

nautical charts, first made in the 13th century

topographic map of a maritime area and adjacent coastal regions

OpenSeaMap is a software project collecting freely usable nautical information and geospatial data to create a worldwide nautical chart. This chart is available on the OpenSeaMap website, and can also be downloaded for use as an electronic chart for offline applications.

level of water that charted depths displayed on a nautical chart are measured from

digital nautical map for navigation on water

OpenCPN (Open Chart Plotter Navigator) is a free software maritime chart plotter and navigation software for use underway or as a planning tool. Developed by a team of active sailors and tested in real world conditions, it has multiple supported chart formats and a variety of data inputs.

brand of nautical chart

Cartographer of Majorca