A canal sight is a view of a canal, which is a man-made waterway. GONDOLA, with seven letters, is a traditional Venetian boat, often used for sightseeing. Oiler, with five letters, is a type of ship that carries oil or other liquids. BARGE, also with five letters, is a large flat-bottomed boat used for carrying freight. Erie, with four letters, is a lake in the Great Lakes region of North America. EAR, with three letters, is an organ of hearing found in many animals.