Marine vessel running controlling apparatus, and marine vessel employing the same

1. A marine vessel running controlling apparatus comprising:

a steering angle acquiring unit arranged to acquire a steering angle of a steering mechanism provided in a marine vessel;

a control unit arranged to control a lift force difference generating unit so as to generate a lift force difference between a port side and a starboard side of the marine vessel according to the steering angle acquired by the steering angle acquiring unit; and

a neutral judging unit arranged to judge whether the steering angle acquired by the steering angle acquiring unit falls within a predetermined neutral range around a neutral value; wherein

the control unit is arranged to control the lift force difference generating unit to increase a heel angle of the marine vessel in a direction defined by the steering angle if the neutral judging unit judges that the steering angle falls outside the neutral range.

2. A marine vessel running controlling apparatus as set forth in claim 1 , further comprising an informing unit arranged to give information when the lift force difference is generated between the port side and the starboard side of the marine vessel by the lift force difference generating unit.

3. A marine vessel running controlling apparatus as set forth in claim 1 , wherein the control unit is arranged to control the lift force difference generating unit to reduce the heel angle of the marine vessel if the neutral judging unit judges that the steering angle falls within the neutral range.

4. A marine vessel running controlling apparatus as set forth in claim 1 , wherein the control unit is arranged to control the steering mechanism to approximate the steering angle to the neutral value after controlling the lift force difference generating unit to increase the heel angle in the direction defined by the steering angle acquired by the steering angle acquiring unit.

5. A marine vessel comprising:

a steering mechanism arranged to steer the marine vessel;

a lift force difference generating unit arranged to generate a lift force difference between a port side and a starboard side of the marine vessel; and

a marine vessel running controlling apparatus as recited in claim 1 .

6. A marine vessel as set forth in claim 5 , wherein the lift force difference generating unit includes a plurality of outboard motors provided on the marine vessel.

7. A marine vessel running controlling apparatus comprising:

a steering angle acquiring unit arranged to acquire a steering angle of a steering mechanism provided in a marine vessel;

a control unit arranged to control a lift force difference generating unit so as to generate a lift force difference between a port side and a starboard side of the marine vessel according to the steering angle acquired by the steering angle acquiring unit; and

a turning judging unit arranged to judge whether the marine vessel is in a turning state; wherein

the control unit is arranged to control the lift force difference generating unit to increase a heel angle of the marine vessel in a direction defined by the steering angle if the turning judging unit judges that the marine vessel is not in the turning state.

8. A marine vessel running controlling apparatus as set forth in claim 7 , further comprising an informing unit arranged to give information when the lift force difference is generated between the port side and the starboard side of the marine vessel by the lift force difference generating unit.

9. A marine vessel comprising:

a steering mechanism arranged to steer the marine vessel;

a lift force difference generating unit arranged to generate a lift force difference between a port side and a starboard side of the marine vessel; and

a marine vessel running controlling apparatus as recited in claim 7 .

10. A marine vessel as set forth in claim 9 , wherein the lift force difference generating unit includes a plurality of outboard motors provided on the marine vessel.

11. A marine vessel running controlling apparatus comprising:

a steering angle acquiring unit arranged to acquire a steering angle of a steering mechanism provided in a marine vessel;

a control unit arranged to control a lift force difference generating unit so as to generate a lift force difference between a port side and a starboard side of the marine vessel according to the steering angle acquired by the steering angle acquiring unit; and

a consistency judging unit arranged to judge whether the steering angle acquired by the steering angle acquiring unit is consistent with a turning state of the marine vessel; wherein

the control unit is arranged to control the lift force difference generating unit to increase a heel angle of the marine vessel in a direction defined by the steering angle if the consistency judging unit judges that the steering angle is inconsistent with the turning state of the marine vessel.

12. A marine vessel running controlling apparatus as set forth in claim 11 , further comprising an informing unit arranged to give information when the lift force difference is generated between the port side and the starboard side of the marine vessel by the lift force difference generating unit.

13. A marine vessel comprising:

a steering mechanism arranged to steer the marine vessel;

a lift force difference generating unit arranged to generate a lift force difference between a port side and a starboard side of the marine vessel; and

a marine vessel running controlling apparatus as recited in claim 11 .

14. A marine vessel as set forth in claim 13 , wherein the lift force difference generating unit includes a plurality of outboard motors provided on the marine vessel.