A good read, thank you. Although I can locate Chile on a map & a few places you reference (Puerto Natales, Puerto Montt), are the other places fictitious, e.g. Isla Tormentos? You usual insert a map at the beginning so we can track the hero's progress.
I suspect (again, I wrote the book so long ago that I’ve forgotten it) that I invented the tormented islands – and I guess we didn’t want a fantasy map? I usually visit the places I write about, but, mea culpa, I didn’t visit Chile, though one of my ambitions is to sail that amazing coastline. I think I stole (sorry, researched) the setting from an extraordinary book called The Totorore Voyage by Gerry Clark – an account of his voyages in the Southern Ocean and truly one of the greatest books about sailing ever written!