Problems of electronic chart coverage for unsurveyed maritime areas

IMO and UKHO requirements regarding the possession of the most accurate charts for the type of intended voyage are unambiguous only in the case of areas that are well-known, surveyed, and documented by the most reliable official chart producers. The problem arises when the sailing area is not covered by charts appropriate for the type of navigation. The author of the paper proposes criteria for assessing the navigational safety of a ship’s voyage. A lack of charts can be compensated for by technical and organizational measures, appropriate knowledge of local conditions (pilotage services or the ship captain’s personal experience), and properly conducted surface navigation.1.1. General remarks regarding information contained on nautical charts
The intention of the UKHO is to plot information on charts at scales appropriate for safe navigation [22]. On large-scale charts, all peculiarities are plotted to ensure safety. (…)

Problems of electronic chart coverage for unsurveyed maritime areas – PDF file for download