I sail on the
West coast of
Scotland and my tidal stream atlas is a vital tool for
passage planning.
I plan to set off
bluewater cruising next year, and I expect to use
OpenCPN with worldwide free charting as my go-to
navigation aid; if necessary and possible I will supplement this with more detailed or updated local charting as I go.
However I was wondering if there was a practical (and reasonably low cost) way of securing global tidal stream data, detailed enough for use in
passage planning?