A ship maneuvering system includes a propulsion unit to steer a ship body, a trim adjuster disposed on the ship body, and a controller. The controller is configured or programmed to correct a change in the traveling state of the ship body due to operation of the trim adjuster.

A hybrid ship propulsion machine includes an internal-combustion-drive propulsion part, a fixing bracket configured to fix the internal-combustion-drive propulsion part to a ship, an electric propulsion part, an elevating device configured to elevate and lower the electric propulsion part; and an attachment bracket attaching the electric propulsion part and the elevating device to the fixing bracket. The elevating device is configured to elevate and lower the electric propulsion part between a position where a second propeller of the electric propulsion part sinks below a water surface and a position where the second propeller comes out of the water surface.

A boat drive hydraulic steering unit has a steering cylinder unit, pump and tank. The cylinder unit has a first chamber, piston and second chamber. The pump is connected to the first and second chambers by respective first and second line. The first chamber is connected to the tank via the first line arrangement when the second chamber is pressurized, by the first line arrangement having a first check valve which opens when the second line arrangement is pressurized. The second chamber is connected to the tank via the second line arrangement when the first chamber is pressurized, by the second line arrangement having a second check valve which opens when the first line arrangement is pressurized. The first and second line arrangements have respective first and second throttling devices acting in the direction of flow towards the tank. A boat drive may include the steering unit.

Techniques are disclosed to enable a system for controlling the propulsion and steering of a boat by a boat operator. The boat has at least one propulsion and steering motor assembly connected to the boat with a propeller, and a propulsion motor. It also has left and right pivoting pedals to provide a signal that controls the angle of the propeller so that if the left pedal is pivoted in a first pivot direction by a first percentage and the right pedal is pivoted in a second pivot direction by a second percentage, the boat executes a turn, moves forward, or moves in reverse.

A marine propulsion system includes at least two parallel propulsion devices that each generate forward and reverse thrusts, wherein the parallel propulsion devices are oriented such that their thrusts are parallel to one another, and at least one drive position sensor configured to sense a drive angle of the parallel propulsion devices. A lateral thruster is configured to generate starboard and port thrust to propel the marine vessel. A user input device is operable by a user to provide at least a lateral thrust command to command lateral movement of the marine vessel and a rotational thrust command to command rotational movement of the marine vessel. A controller is configured to control the parallel propulsion devices and the lateral thruster based on the lateral steering input and/or the rotational steering input and the drive angle so as to provide the lateral movement and/or the rotational movement.

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 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 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 tiller for an outboard motor includes a tiller body that is elongated along a longitudinal center axis between a proximal end and a distal end. A throttle grip is on the distal end of the tiller body. A trim switch assembly is located at a distal end of the throttle grip. The trim switch assembly includes a momentary switch and a driver. The driver is configured to output current to activate a trim relay on the outboard motor in response to actuation of the momentary switch.