in addition to an EDC whistle, key chain LED light, pill fob with aspirin... possibly a couple of 1/10oz gold coins in the bottom

LED headlamp plus LED task light
Cyalume light sticks
Nomex gloves and balaclava,jacket
smoke, dangerous gases escape hood
wonder bar pry tool
FAK with burn gel

copy of up to date shot records
proof of American citizenship
hardcopy of important phone numbers

I don't know about lines(ropes) on a cruise ship... possibly a Wilderness Instructor belt and locking carabiner