A ship maneuvering system includes a propulsion unit to steer the ship body, a trim adjuster on the ship body, a detector to detect a traveling state of the ship, and a controller. The controller operates the trim adjuster in a state in which the steering angle of the propulsion unit is set to a first steering angle. The controller sets the steering angle of the propulsion unit to a second steering angle different from the first steering angle to correct a change of the traveling state of the ship due to an operation of the trim adjuster.

A method for controlling an elastic mount configured to support a propulsion device with respect to a marine vessel, wherein the elastic mount contains an electromagnetic fluid and an electromagnet and is configured such that adjusting an amount of electricity applied to the electromagnet changes the shear strength of the electromagnetic fluid and thereby controls elasticity of the elastic mount, including applying a first amount of electricity to the electromagnet to produce a first elasticity in the elastic mount, determining that a vessel speed indicator exceeds a high speed threshold, determining that a trim position for the propulsion device is greater than a threshold trim position, detecting at least a threshold decrease in throttle demand, and applying a second amount of electricity to the electromagnet wherein the second amount of electricity is greater than the first amount of electricity, so as to decrease the elasticity of the elastic mount.

A center of an actuator that rotates a steering shaft in side view of an outboard engine main body is at an outboard engine main body side from a clamp shaft supported by a clamp bracket and below the clamp shaft, and is further at a clamp shaft side from a steering shaft that is swingably supported by a swivel bracket that swings forward and backward with the outboard engine main body with the clamp shaft as a fulcrum. The center is located at the outboard engine main body side from an upper end mounting shaft where a tilt/trim unit that causes the swivel bracket to swing forward and backward with the clamp shaft as a fulcrum is connected to the swivel bracket and the tilt/trim unit is mounted and above the upper end mounting shaft.

A center of an actuator that rotates a steering shaft in side view of an outboard engine main body is at an outboard engine main body side from a clamp shaft supported by a clamp bracket and below the clamp shaft, and is further at a clamp shaft side from a steering shaft that is swingably supported by a swivel bracket that swings forward and backward with the outboard engine main body with the clamp shaft as a fulcrum. The center is located at the outboard engine main body side from an upper end mounting shaft where a tilt/trim unit that causes the swivel bracket to swing forward and backward with the clamp shaft as a fulcrum is connected to the swivel bracket and the tilt/trim unit is mounted and above the upper end mounting shaft.

A ship propulsion system provides a first power transmission device that transmits power from an internal combustion engine to a propeller, a second power transmission device that transmits power from an electric motor to a propeller and that is mounted to the hull so as to be able to turn up and down independently from the first power transmission device, an actuator for causing the second power transmission device to turn up and down, and a control device. The control device is configured so as to be able to select a first drive mode in which the internal combustion engine is driven and the electric motor is not driven, and a second drive mode in which the internal combustion engine is not driven and the electric motor is driven. When the first drive mode is selected, the actuator is operated so that the second power transmission device turns up.

A marine device assembly, such including a trolling motor and/or at least one sonar transducer, is provided for attachment to a watercraft. The trolling motor and/or sonar transducer is attached at an end of a shaft. The marine device assembly includes a position adjustment assembly comprising a plurality of rotatable drums surrounding the shaft that are configured to adjust the rotational and/or vertical position of the trolling motor and/or sonar transducer(s) in accordance with a position adjustment command. In various aspects, the drums are configured to independently rotate about the shaft in a clockwise or counterclockwise direction so as to cause the trolling motor and/or sonar transducer(s) to rotate about the central axis of the shaft and/or translate along the central axis of the shaft.

A propulsion device for a marine vessel. A base is configured to be coupled to the marine vessel. A shaft includes an upper segment and a lower segment each extending along a length axis, wherein the upper segment is coupled to the base. A propulsor is coupled to the lower segment, where the propulsor is configured to propel the marine vessel in water. A shock absorber includes a resilient member that resiliently couples the upper segment and the lower segment together, where the resilient member dampens impact forces received at the lower segment and reduces transfer of the impact forces to the upper segment.

A propulsion device for a marine vessel. A base is configured to be coupled to the marine vessel. A shaft includes an upper segment and a lower segment each extending along a length axis, wherein the upper segment is coupled to the base. A propulsor is coupled to the lower segment, where the propulsor is configured to propel the marine vessel in water. A shock absorber includes a resilient member that resiliently couples the upper segment and the lower segment together, where the resilient member dampens impact forces received at the lower segment and reduces transfer of the impact forces to the upper segment.

An outboard motor includes an outboard motor body, a steering shaft, a steering cylinder including a piston rod extending in a right-left direction of the outboard motor body, a piston fixed to the piston rod, and a cylinder body including an oil chamber and the piston therein, and an oil passage inside the piston rod and connected to the oil chamber. The steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction.

An outboard motor includes an outboard motor body, a steering shaft, a steering cylinder including a piston rod extending in a right-left direction of the outboard motor body, a piston fixed to the piston rod, and a cylinder body including an oil chamber and the piston therein, and an oil passage inside the piston rod and connected to the oil chamber. The steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction.