Module 19 - Electronic Navigation
Electronic Charts
Electronic charts are not all the same. Official Electronic Navigational Charts (ENCs) are vector charts designed for ECDIS and approved systems. Raster charts are scanned or image-based versions of paper charts. Private chart databases may be useful but may not carry the same status or update process.
Vector charts can hide or show information depending on scale, settings, and safety contour choices. Raster charts show the familiar paper-chart image but do not behave like vector data. Yachtmaster-level use means understanding what chart type is loaded, when it was updated, and which safety settings affect what you see.
- ENC: official vector chart data
- Raster chart: image-style chart display
- Private chart data varies in quality and update method
- Vector chart detail depends on scale and display settings
- Keep chart data updated
Continue studying Electronic Navigation
This public lesson is part of Revision Module 19. Full revision access adds the guided Learn, Practise and Test flow, flashcards and revision progress.