When Ethan sees she needs to cling to the rail to keep from toppling, he moves forward, reaching an arm-- er-- he stands near for now, arm poised around her in case she loses her grip.

"I don't want to touch you if you don't want to be touched, but I can help you get to a place where you're sitting if you want. I really don't want you to topple over the side," he says, and she does sound really, really miserable. Maybe there's a medical room here somewhere, not that he'd know where it is. "Not a fun thing to find out for the first time when you're forced on a ship with no apparent way off."

And no idea where pills might be to help with the sea sickness.