charts

Tecmarine can supply Navionics, Chartworld and C-Map charts.

Charts can be updated by their suppliers with the latest changes when available from several sources such as Hydrographic offices, Notices to Mariners and surveys.
The two most widely used types of electronic chart data are listed below.

Electronic Navigational Charts (“ENCs”)

ENCs are vector charts that conform to the requirements for the chart databases for ECDIS, with standardized content, structure and format, issued for use with ECDIS on the authority of government authorized hydrographic offices. ENCs are vector charts that also conform to International Hydrographic Organization specifications S-57.
ENCs contain all the chart information necessary for safe navigation, and may contain supplementary information in addition to that contained in the paper chart. Systems using ENC charts can be programmed to give warning of impending danger in relation to the vessel’s position and movement. ECDIS systems must be certified according to IMO regulations.

Raster Navigational Charts (“RNCs”)

Raster Navigational Charts (RNCs) are raster graphics charts that conform to International Hydrographic Organization specifications S-61. These are produced by converting paper charts to digital image by scanner. The image is similar to digital camera pictures, which could be zoomed in for more detailed information as it does in ENCs.