<div dir="ltr"><br><div class="gmail_extra">How to map a nautical channel [1] ?</div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">[1] <a href="https://en.wikipedia.org/wiki/Channel_(geography)#Nautical_channels">https://en.wikipedia.org/wiki/Channel_(geography)#Nautical_channels</a><br></div></div>