I'm not sure I'd put that off to sea sickness. I've had situations where myself and one other was sea sick offshore. Maybe after two or three days, I might be too tired to stay on watch...but not the first night.

I repeat, they were motoring on autopilot because there wasn't much wind. Insensitively maybe, I think the sad explanation is more "Forest Gump" than "Doctor Kildaire" :^))) [It's Friday, I can't help myself.]