Surprisingly, no. They counted deaths from exposure, drowning, etc as fatalities in this study: https://www.aviationsafetymagazine.com/features/the-myths-of-ditching/
This is just a review of NTSB data and some ditchings may have gone unreported. The main point is that ditching, even in the open ocean is very survivable.
They’ll pick someone who covers Harris’s demographic gaps for VP, like they did Biden for Obama. Probably a moderate from a swing state. Edit: spelling.