Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Any chance a tidal overlay can be added?
@conorpie Tides are already available as table for some harbours and only in some countries. So do you want a tide heights map or a tidal stream map?