A watercraft propulsion system includes first and second propulsion devices attachable to a hull asymmetrically with respect to an anteroposterior center line of the hull, a lateral movement command generator to generate a first lateral movement command and a second lateral movement command to laterally move the hull rightward and leftward, and a controller. The controller includes a memory to store first and second lateral movement thrust ratios indicating ratios between a forward propulsive force and a reverse propulsive force in a first lateral movement control and a second lateral movement control. When one of the first and second lateral movement thrust ratios is set in a calibration mode, the controller is configured or programmed to set an initial value of the other of the first and second lateral movement thrust ratios to an inverse of the one of the first and second lateral movement thrust ratios.

A watercraft propulsion system includes first and second propulsion devices attachable to a hull asymmetrically with respect to an anteroposterior center line of the hull, a lateral movement command generator to generate a first lateral movement command and a second lateral movement command to laterally move the hull rightward and leftward, and a controller. The controller includes a memory to store first and second lateral movement thrust ratios indicating ratios between a forward propulsive force and a reverse propulsive force in a first lateral movement control and a second lateral movement control. When one of the first and second lateral movement thrust ratios is set in a calibration mode, the controller is configured or programmed to set an initial value of the other of the first and second lateral movement thrust ratios to an inverse of the one of the first and second lateral movement thrust ratios.

A watercraft propulsion system includes a main propulsion device attachable to a hull, an auxiliary propulsion device attachable to the hull and having a lower rated output than the main propulsion device, a lift to move up and down a propeller of the auxiliary propulsion device between an underwater position and an above-water position, and a controller. The controller includes a plurality of control modes including a combined use mode in which a propulsive force generated by the main propulsion device and a propulsive force generated by the auxiliary propulsion device are used in combination. The controller is configured or programmed to restrict the main propulsion device and the auxiliary propulsion device from being driven according to the combined use mode when the propeller of the auxiliary propulsion device is in the above-water position.

A watercraft propulsion system includes an engine propulsion device attachable to a hull and including a propeller rotatable about a first propeller axis, an electric propulsion device attachable to the hull and including a propeller rotatable about a second propeller axis different from the first propeller axis, and a controller configured or programmed to control the engine propulsion device and the electric propulsion device. The controller is configured or programmed to perform a propulsive force matching control to match a propulsive force increasing characteristic of the electric propulsion device with a propulsive force increasing characteristic of the engine propulsion device when a command is inputted to simultaneously generate propulsive forces from the engine propulsion device and the electric propulsion device.

A method for controlling a trim-tilt angle of a propulsion unit of a marine outboard motor. The method includes: receiving a request to increase the trim-tilt angle of the propulsion unit; determining a motor operation parameter; determining the trim-tilt angle of the propulsion unit; prior to increasing the trim-tilt angle in response to the request, determining if the propulsion unit is in a trim limit condition; increasing the trim-tilt angle of the propulsion unit in response to the request when the propulsion unit is determined not to be in the trim limit condition; and one of maintaining the trim-tilt angle of the propulsion unit and stopping increase of the trim-tilt angle of the propulsion unit when the propulsion unit is determined to be in the trim limit condition. A method for controlling the trim-tilt angle in view of an over-trim condition of the propulsion unit is also disclosed.

The assembly includes a pivoting body member connectable to an outboard motor assembly, wherein the pivoting body member is movable along a transition path having a locked condition endpoint and an unlocked condition endpoint. A pivoting latch seat mechanically cooperates with a fixed latch pin in the assembly to maintain the pivoting latch seat and the outboard motor assembly in a locked condition when the outboard motor assembly is in a lowered position. The pivoting latch seat is mounted and arranged to disengage from the fixed latch pin to an unlocked condition when the pivoting body member is moved along the transition path to the unlocked condition endpoint, thereafter permitting movement of the outboard motor assembly to a raised position.

Systems and methods are for monitoring underwater impacts to marine propulsion devices. The systems can comprise a marine propulsion device that is trimmable up and down about a trim axis; a trim sensor that senses at least one of a current trim position of the marine propulsion device relative to the trim axis and a rate at which the marine propulsion device is trimmed relative to the trim axis; and a controller that is configured to compare the rate at which the marine propulsion device is trimmed relative to the trim axis to a stored threshold value to thereby determine whether an underwater impact to the marine propulsion device has occurred.

A trolling motor is provided comprising a motor housing, a motor controller operably associated with the motor housing, and a down tube assembly extending from the motor housing. When the trolling motor is in operation on a boat, the down tube assembly will support the motor housing submerged in water. The motor controller is associated with the down tube assembly.

A trolling motor is provided comprising a motor housing, a motor controller operably associated with the motor housing, and a down tube assembly extending from the motor housing. When the trolling motor is in operation on a boat, the down tube assembly will support the motor housing submerged in water. The motor controller is associated with the down tube assembly.

There is provided a mounting assembly for a marine vessel having a pair of stern-mounted propulsion units. The assembly includes a pair of angle-setting members which forwardly angle the propulsion units towards a bow of the marine vessel when each propulsion unit is at the center of its total steering range. Each propulsion unit has a line of action of its propulsion force. The lines of action of the propulsion units intersect each other between a center of rotation of the marine vessel and a stern of the marine vessel when the propulsion units are steered forwardly towards each other.