Possible Clues:

• Ship's policy read at the start
• Stay too long, missing good cruise ship
• Ship leaving Iceland, Northern Europe, rapidly first of all
• It can be found in the bin (or at sea!)
• Hit from a spray hitter
• Ship concerned with nothing on return trip?
• Cruise carrier
• Queue by river vessel
• Crafty type raises some children illuminatingly
• It might go around your eyes or lips