i think it would have some type of emergency hatch to another overhead section (above the waterline) but not necessarily a fulltime starwell up.
Family physician Aaron Roland, 62, tells USA TODAY that he, too, has been on the Conception and that it had only one exit from below decks, meaning passengers "have to go up stairs and through the galley and cabin to get outside."
He says he finds it "hard to understand why two exits (are) not required."
Roland says he read a report on Twitter that the Conception has an emergency exit behind the bunk room but that he was never told about it during the onboard safety briefing for his dive trip.
https://www.usatoday...its/2191195001/