Abstract: A jet actuated boat propulsion device is provided for driving a boat in areas where hyacinths or other water vegetation exists, and which normally would foul up the operation of an outboard or inboard motor. A water pump positioned in a well in the bottom of the boat and communicating with the water in which the boat is floating is connected through conduits to discharge a jet of water through a nozzle extending into the body of water in which the boat is floating. The jettisoned water being discharged into the body of water exerts a jet action or thrust which drives the boat through the water.