Possible Clues:

• Queue getting onto river boat
• Rubbish to be conveyed in this ship?
• The Titanic, e.g
• Trash carried in this passenger vessel
• Strip river vessel
• Old railway company acquires one ship
• Cruise ship's tarry? Not good!
• Cruise ship damaged Nile River
• Having lost gallons, wait around for vessel
• Hard smash on the diamond