I shot this from the bow of a vaporetto one afternoon while passing Tronchetto, heading in the direction of the train station.
Here we see a classic Venetian boat known as a "sanpierota".
For centuries they were rowed and sailed, but many (if not most) now have an outboard motor clamped to the back.
But if you look closely, you might spot a forcola of simple design, just to the left of the driver.
Under sail these boats are easily identified by their unique painted sails.