If the boat survive without human intervention during the storm, then the occupant can survive there too providing he or she securing themselves properly inside the boat below deck. Perhaps wearing helmet and body protecting armor like those used by the motorcyclists.
try this at home, don all the protective gear you like, build a good strong carbon fibre box. Get into it, accelerate it at a solid object , do not emerge alive, note that the box is intact. Unfortunately carbon life forms are not as strong as boxes.