[psunavy03]

On a ship, you also keep the same time zone as local time for the area you are steaming through. Going consistently westward to get somewhere is a bonus, because every other day you get to sleep in an extra hour.

[PaulDavisThe1st]

Oddly enough, on the Queen Mary 2, sailing eastward from NYC to Southampton, they change the time just after lunch. No extra sleep-ins!