I also thought of something else too - the times they had both hulls in the water may have been intentional in order to scoop up ballast.
They were scooping alot of water then. I say poor boat balance and poor helm.
"I said, now, I said ,pay attention boy!"
The cure for anything is salt water - sweat, tears, or the sea Isak Dinesen If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most. E. B. White