Isn't it a little late in the year to attempt the NW passage?
Sir John Franklin had a rough go of it.
I dont know the distance of the trip, but a couple hundred miles a day is very doable. I've done over a 100 a day lots of times, on a river not the ocean/sea, in a day with just a 20hp motor. And, I was stopping to run trot lines and raising traps and nets. Spend more time stopped than I did motoring.
Gonna be rough on his back. Wonder if he's running a tiller handle.