Happy,
the idea of the draw-boundary PI came just from places/situations like those.
No need to use tracks or routes anymore.
Give it a try.
Shall give in the future even the option to share information.
I'm scared when somebody as the OP tells me "the warnings are just for big vessels, I donīt care". How to explain that this is valid information of everybody?
Natural reserves, dumping grounds,
anchorages for big vessels .....
Hubert