To enhance a coast-landing property by exactly stopping a vessel body.

A throttle cable 42 is moved to a direction of opening a throttle valve by throttle opening mechanisms 46A, 46B at the time of larger movement of a reverse cable 37 after a reverse bucket 36 is pivoted to the lowermost pivoting position by a grip operation of an operation lever 32. Thereby, an output of an engine is increased and a reverse injection from the reverse bucket 37 is strengthened.