An outboard motor includes a power converter to convert AC power generated by a generator that generates power by operation of a drive engine into DC power and to supply converted DC power to a plurality of batteries, a voltage detector to detect a voltage value of the DC power converted by the power converter, and a phase angle controller configured or programmed to perform a retarding/advancing control until the voltage value of the DC power becomes equal to or higher than a first preset voltage value, which is higher than a voltage value at a start of the retarding/advancing control.

There is provided an outboard motor. A first oil passage is provided in a lower case, extends upward from a front lower portion, and reaches a first connection position which is positioned above a height position of an anti-ventilation plate or at a front portion of a boundary portion between a middle case and the lower case. A second oil passage is provided in the lower case or at the boundary portion, extends rearward from the first connection position, and reaches a second connection position which is positioned at a rear upper portion or at the rear portion of the boundary portion. A first oil supply/discharge port is opened on a side surface of the rear upper portion of the lower case or on a side surface of the rear portion of the boundary portion, and communicates with the second oil passage at the second connection position.

In a control device for a battery of a marine vessel, a first value indicating either a voltage or a power storage amount of a main battery to supply electric power to start the engine is acquired. When the first value that has been acquired is smaller than a first threshold value, at least one of a prohibition of a transition to a motor drive mode in which a propeller is driven by using at least a motor regardless of an operation mode that is designated and a prohibition of charging a load battery is performed, and the engine is caused to rotate to charge the main battery.

In a control device for a battery of a marine vessel, a first value indicating either a voltage or a power storage amount of a main battery to supply electric power to start the engine is acquired. When the first value that has been acquired is smaller than a first threshold value, at least one of a prohibition of a transition to a motor drive mode in which a propeller is driven by using at least a motor regardless of an operation mode that is designated and a prohibition of charging a load battery is performed, and the engine is caused to rotate to charge the main battery.

A control system for a marine propulsion device includes a propeller driven by either an engine or a motor. The control system includes a first memory to store first information to identify whether the control system has shut down normally or abnormally even during a reset period of the control system, a second memory to store second information indicating control states of the engine and the motor even during the reset period of the control system, and a controller configured or programmed to start controlling the engine and the motor, based on the second information stored in the second memory, when the first information stored in the first memory indicates an abnormal shutdown of the control system at a startup of the control system.

A control system for a marine propulsion device includes a propeller driven by either an engine or a motor. The control system includes a first memory to store first information to identify whether the control system has shut down normally or abnormally even during a reset period of the control system, a second memory to store second information indicating control states of the engine and the motor even during the reset period of the control system, and a controller configured or programmed to start controlling the engine and the motor, based on the second information stored in the second memory, when the first information stored in the first memory indicates an abnormal shutdown of the control system at a startup of the control system.

An engine includes a crankshaft. A driveshaft is connected to the crankshaft, and extends in an up-and-down direction of an outboard motor. A propeller shaft is connected to the driveshaft, and extends in a back-and-forth direction of the outboard motor. An intake pipe is connected to the engine. The intake pipe includes a first pipe portion and a second pipe portion that are provided separately from each other. A seal member is disposed between the first and second pipe portions, and couples the first and second pipe portions therethrough.

A control system for navigating a marine vessel employs at least a first motor and a second motor. The control system is configured to communicate with the first and second motors. The control system is configured to receive a position measurement and an orientation measurement for the marine vessel. The control system is further configured to generate at least one control signal for the first motor based on the position measurement and at least one control signal for the second motor based on the orientation measurement.

An outboard motor for a marine vessel application, and related methods of making and operating same, are disclosed herein. In at least one embodiment, the outboard motor includes a horizontal-crankshaft engine in an upper portion of the outboard motor, positioned substantially positioned above a trimming axis of the outboard motor. In at least another embodiment, first, second and third transmission devices are employed to transmit rotational power from the engine to one or more propellers at a lower portion of the outboard motor. In at least a further embodiment, the outboard motor is made to include a rigid interior assembly formed by the engine, multiple transmission devices, and a further structural component. In further embodiments, the outboard motor includes numerous cooling, exhaust, and/or oil system components, as well as other transmission features.

An outboard motor for a marine vessel application, and related methods of making and operating same, are disclosed herein. In at least one embodiment, the outboard motor includes a horizontal-crankshaft engine in an upper portion of the outboard motor, positioned substantially positioned above a trimming axis of the outboard motor. In at least another embodiment, first, second and third transmission devices are employed to transmit rotational power from the engine to one or more propellers at a lower portion of the outboard motor. In at least a further embodiment, the outboard motor is made to include a rigid interior assembly formed by the engine, multiple transmission devices, and a further structural component. In further embodiments, the outboard motor includes numerous cooling, exhaust, and/or oil system components, as well as other transmission features.