Jet propulsion watercraft

A jet propulsion watercraft comprising;

• a watercraft body;
• a battery;
• an electric propulsion device including an electric motor driven by electricity supplied from the battery, the electric propulsion device applying a propulsive force to the watercraft body;
• a jet propulsion device including an engine and a jet water flow generator driven by the engine to generate a jet water flow, the jet propulsion device applying a propulsive force to the watercraft body by the jet water flow;
• a generator that is driven by the engine to generate power and charge the battery;
• an electric starter that is supplied with power by the battery to start the engine;
• and
• a control device that controls the electric propulsion device and the jet propulsion device, the control device controlling the engine to increase a power generation amount of the generator when a remaining charge amount of the battery is less than a predetermined lower limit determination amount.

A jet propulsion watercraft comprising;

• a watercraft body;
• a battery;
• an electric propulsion device including an electric motor driven by electricity supplied from the battery, the electric propulsion device applying a propulsive force to the watercraft body;
• a jet propulsion device including an engine and a jet water flow generator driven by the engine to generate a jet water flow, the jet propulsion device applying a propulsive force to the watercraft body by the jet water flow;
• a generator that is driven by the engine to generate power and charge the battery;
• an electric starter that is supplied with power by the battery to start the engine;
• and
• a control device that controls the electric propulsion device and the jet propulsion device, the control device starting the engine when a condition that the driving of the electric propulsion device is started in a state where a remaining charge amount of the battery is less than a predetermined lower limit determination amount and the engine is being stopped is satisfied.