A gondola.
The word is gondola, which is a traditional method of transportation there.
Sunfish
A gondola is a long narrow flat-bottomed boat with a high ornamented stem and a platform at the stern where an oarsman stands and propels the boat. You can get rides on them in Venice, Italy.
A flat boat is a flat-bottomed boat used to float goods and passengers downriver.
ferryboat
The large ones are called barges. The smaller ones are referred to as a "John boat" or a duck skiff. In Venice, the transportation boats are called gondolas.
They can be a barge or a narrow boat.
A Gondola is a flat bottomed Venetian rowing boat, for many years, the chief means of transportation on the Venice Canals. It is propelled by punting with an oar at the stern
A bateau is a small, flat-bottomed boat.
A batteau is a small, flat-bottomed boat.
Flatboat
barge