Water jet propulsion boat

A water jet propulsion boat, comprising:

• a boat body having a steering handle, the steering handle having a right grip portion and a left grip portion;
• an engine mounted to the boat body;
• a jet flow generation device including a jet port, the jet flow generation device being to be driven by the engine, and being configured to jet out water from the jet port in a direction backward of the boat body to generate a jet flow, the jet flow generation device being configured to generate the jet flow even when the engine is in an idling state;
• a jet flow adjustment member that is movable with respect to the boat body, the jet flow adjustment member being configured
• to divide the jet flow from the jet port into a forward-movement jet flow having a backward jet flow component directed backward of the boat body, and a backward-movement jet flow having a forward jet flow component directed forward of the boat body, and
• to adjust a difference between a first thrust generated by the forward jet flow component and a second thrust generated by the backward jet flow component in accordance with a movement position of the jet flow adjustment member;
• a first operation element for operating the water jet propulsion boat with a changeable first operation amount, the first operation element being provided in the right grip portion of the steering handle;
• a second operation element for operating the water jet propulsion boat with a changeable second operation amount, the second operation element being provided in the left grip portion of the steering handle;
• a third operation element for operating the water jet propulsion boat, the third operation element being different from the first operation element and the second operation element;
• and
• a control device configured to:
• control, when a first mode is selected, an amount of the jet flow and the movement position of the jet flow adjustment member, based on at least one of the first operation amount of the first operation element or the second operation amount of the second operation element;
• and
• maintain, when a second mode is selected, an operation state of the engine in the idling state, and control the movement position of the jet flow adjustment member in accordance with an operation on the third operation element.