Marine Charting & Cartography
A safe boating experience cannot be imagined without nautical maps. Though conventional paper marine maps are still used on every boat, new technologically-advanced electronic charts have made the entire map reading and course planning routine much easier. So what is electronic cartography? The definition is pretty straightforward - electronic charts are digital versions of the most dependable government-issued paper charts and maps crated to simplify your navigation.
The data that is used by electronic charts comes from a number of government sources including NOAA, Canadian Hydrographics, and many others. Electronic charts give mariners greater possibilities on the water, providing you with innovative object-oriented cartography. Normally the electronic charts are displayed on chartplotters, multifunction displays (smartphones) or personal computers. Chartplotters, that are typically waterproof, are usually opted for when you own smaller 40’-50’ boats, while tablets and smartphones are well-suited for larger sail and power boats. PCs are usually used on large vessels and commercial boats.
Electronic charts are available in a number of formats: dynamic raster scanned charts (Maptech) that are basically direct video images of paper charts. They are precise and reliable versions of conventional paper charts. Vector charts (Garmin, Navionics, C-Map) typically take less memory as they have the information transformed into coordinates in a data file. Vector charts are “object oriented”, so when a cursor is positioned over icons, numerals, words or other features, additional windows with detailed descriptions will pop up. New generation 3D maps with high-definition relief will provide you with improved underwater view.
Electronic charts for chartplotters are usually available on small microSD memory cards that can be inserted into a GPS unit. In their turn, smartphone and PC charts are downloadable. While the paper maps show signs of heavy use, over time signaling you to get a newer version, the electronic chart will look brand new, but may pose danger when outdated. Thus, your electronic maps should be regularly updated and kept current to provide greater level of protection against marine hazards. Either used for recreational and commercial boating or fishing, interactive electronic charts will help you make the most of your boating experience.
