Hi nat,
...and, he does it very well, no question...
But, in real life, why anyone would bother to create a 'route' on a plotter or computer to run the Russel Slough Channel is completely beyond me...
I'll bet Sea-Tow and Towboat/US just love see all these boaters running around with their eyes glued to their iPads these days, it has got to be good for business... (grin)
best regards,
Jon