I'm with Banjansailor on lifeboats.
If you really NEED to play that hard, not only seat belts, but also self righting capability is a must. That's actually a different league.

But there are pleasure trawlers which - with regard to safety - I'd put before Nordhavn in my wish list. Just a few names by heart:
- Kanter
- Moloka'i Strait
- Cape Horn
- Real Ships
- Pacific Motoryacht
Mind, that's mainly because - as I said - cruising on a plastic hull at night in the middle of an ocean is something I'd never be comfortable with, regardless of GRP thickness. Other than that, I do like the Nordhavn.

Re. single engines, who said they're unreliable? I actually told the opposite.
It's the arrangement of the get home system which I'd be concerned about, regardless of whether it's driven by a biggish genny or a dedicated wing engine.
I tried once - just for the sake of simulation - to helm a heavy displacement boat with reduced power and asymmetrical thrust in a F5/F6. Believe me, it's a nightmare.
Being in a F8 sea with hundreds of miles to go, and only that sort of get home system available, that's a clear-cut case for a mayday imho.

And of course "stabs are for comfort".
That's why they're also important, particularly in a very long passage...