Related Clues:

• Loophole-exploiting casino site, say
• Yacht, e.g
• Canoe or catamaran
• Small ship
• It may be filled with gravy
• Sailing necessity
• Trireme mover
• Tug or tub
• Gondola, e.g
• It's buoyant, oddly
• Punt, e.g
• Cause trouble in the boat?
• Vessel with rows?
• One ordered to have a stroke
• Marina has one rattler in the middle of catch