Not for navigation

Draft, pending legal review. This text is a draft that has not yet been reviewed by a lawyer and is not in force. Items in [brackets] are still to be confirmed.

Chart Gap is not an official nautical chart and must not be used for navigation.

Our maps, depths, contours and 3D views are processed from research surveys and open datasets. No hydrographic office has produced, checked or approved them, and they do not meet SOLAS, IHO or ECDIS requirements.
The data can be old, incomplete, wrongly positioned or wrong. Depths are not reduced to chart datum unless we say so.
Blank or "uncharted" areas mean we have no data, not that the water is safe. Surveyed areas can still hide rocks and shoals.
The GPS / boat view is a convenience display only.
Always use official charts, notices to mariners, a proper lookout and prudent seamanship. The master remains responsible for the safety of the vessel and everyone on board.

Full terms: Terms of Service, sections 9 and 10.