Patent ID: 8092264

Claim:
A marine vessel comprising: a hull; a propulsion device arranged to propel the hull by a driving force of an engine having a throttle valve arranged to be electrically controlled so as to open and close; an operation lever arranged to be operated by a marine vessel operator to adjust a throttle opening degree of the throttle valve, the operation lever arranged to hold an operation position; a fine adjustment switch arranged to be operated by the marine vessel operator to increase or decrease the throttle opening degree, which has been adjusted by the operation of the operation lever, to further adjust the throttle opening degree that has been adjusted by the operation lever; a control unit arranged to adjust the throttle opening degree based on an operation amount of the operation lever and an operation state of the fine adjustment switch; and a storage unit arranged to store reference information expressing a correspondence relationship between the operation amount of the operation lever and a reference setting value of the throttle opening degree, first fine adjustment information defining a throttle opening degree setting value higher than the reference setting value corresponding to the operation amount of the operation lever, and second fine adjustment information defining a throttle opening degree setting value lower than the reference setting value corresponding to the operation amount of the operation lever; wherein the fine adjustment switch includes an up switch portion arranged to be operated by the marine vessel operator to increase the throttle opening degree that has been adjusted by the operation of the operation lever, and a down switch portion arranged to be operated by the marine vessel operator to decrease the throttle opening degree that has been adjusted by the operation of the operation lever; the control unit is arranged to increase the throttle opening degree according to the operation amount of the up switch portion when the up switch portion is operated, and to decrease the throttle opening degree according to the operation amount of the down switch portion when the down switch portion is operated; and the control unit is further arranged to select the reference information, the first fine adjustment information, or the second fine adjustment information according to the operation of the up switch portion or the down switch portion, and to set the throttle opening degree based on the operation amount of the operation lever and the selected information.