Another word for a river vessel is a "barge." Barges are flat-bottomed boats designed for transporting goods along rivers and canals. They are often towed or pushed by tugboats, making them efficient for inland waterway transport.
Barge
Ship.
Blood vessel
Vessel
Vessel
vial
Fishing boat.
Vessel
Tankard
submersible?
A catamaran.
A river vessel is defined as almost any boat/ship/barge that is able to navigate a river.