Control system and control method for outboard motor

A control system for reducing sway of a boat, the control system comprising:

• an outboard motor including a power source and a propeller shaft, the power source including a rotating shaft, the propeller shaft being connected to the rotating shaft;
• a sway sensor that outputs a signal indicative of the sway of the boat;
• and
• a controller communicatively connected to the sway sensor, the controller being configured to
• receive the signal indicative of the sway of the boat from the sway sensor, and
• control at least one of a moment of inertia about the rotating shaft, a rotation speed of the rotating shaft, or a tilt angle of the rotating shaft according to the sway of the boat, to generate an inertial force against the sway of the boat;
• a first clutch configured to switch between connection and disengagement of the rotating shaft and the propeller shaft, wherein
• the controller is further configured to control the rotation speed of the rotating shaft according to a magnitude and/or a direction of the sway of the boat while controlling the first clutch to release the propeller shaft from the rotating shaft.

A control system for reducing sway of a boat, the control system comprising:

• a first outboard motor including a first power source and a first propeller shaft, the first power source including a first rotating shaft, the first propeller shaft being connected to the first rotating shaft;
• a second outboard motor including a second power source and a second propeller shaft, the second power source including a second rotating shaft, the second propeller shaft being connected to the second rotating shaft;
• a sway sensor that outputs a signal indicative of the sway of the boat;
• and
• a controller communicatively connected to the sway sensor, the controller being configured to
• receive the signal indicative of the sway of the boat from the sway sensor,
• control at least one of a moment of inertia about the first rotating shaft, a rotation speed of the first rotating shaft, or a tilt angle of the first rotating shaft, or at least one of a moment of inertia about the second rotating shaft or a tilt angle of the second rotating shaft according to the sway of the boat, to generate an inertial force against the sway of the boat.