Patent ID: 8078347

Claim:
A control device for a watercraft propulsion system comprising: a remote controller operating section including a remote controller shift lever arranged to remotely control forward, neutral and reverse modes, a watercraft propulsion section including a shift change unit arranged to make shift changes among the forward, neutral and reverse modes and a shift actuator arranged to drive the shift change unit, and a main control section arranged to control an operation of the shift actuator based upon an operational amount of the remote controller shift lever when the remote controller shift lever is operated; an auxiliary control section arranged to control a watercraft to move at an extremely slow speed by alternately changing the shift actuator between the forward or reverse shift mode and the neutral mode; and a change operation section arranged to select one of the auxiliary control section and the main control section; wherein the auxiliary control section includes a selection table including a plurality of extremely slow speed navigation instructing data generated by combining a predetermined forward or reverse period and a predetermined neutral period, the selection table being adapted to move a watercraft hull at the extremely slow speed when the change operation section is changed to an extremely slow speed control state; the remote controller operating section includes an instructing data selecting section arranged to output an execution instruction of the extremely slow speed navigation to the shift actuator by selecting one of the plurality of extremely slow speed navigation instructing data; and the remote controller shift lever functions as the instructing data selecting section when the auxiliary control section is selected by the change operation section, and the one of the plurality of extremely slow speed navigation instructing data is selected based upon the operational amount of the remote controller shift lever.