Related Clues:

• See 11
• There's many a drop down here
• A waterbed?
• ... or 5 on the remote waterway
• Vessel among the waves, perhaps
• Route north cutting No. 5?
• Difficult to pass round river that's low
• Depression pigs get into
• Roger beset by severe depression
• Napoleon's failed project passed through by French on way to Waterloo
• Exhaust pipe
• Remove liquid from
• Draw off Ü sewer
• Exhaust - pipe
• Underground route to France