A method for positioning a jack plate coupled to a transom of a marine vessel includes: in response to receiving a first store command, storing a measured first position of a movable part of the jack plate in connection with a measured first vessel speed; in response to receiving a second store command, storing a measured second position of the movable part of the jack plate in connection with a measured second vessel speed; in response to determining that the marine vessel is operating at or above the first vessel speed, but below the second vessel speed, automatically positioning the movable part of the jack plate at the stored first position; and in response to determining that the marine vessel is operating at or above the second vessel speed, automatically positioning the movable part of the jack plate at the stored second position.

An outboard motor lifting device includes a hydraulic source, a first oil channel connecting the hydraulic source with a second chamber of a tilt cylinder, a second oil channel connecting the first oil channel with a second chamber of a trim cylinder, a third oil channel connecting the hydraulic source with a first chamber of the tilt cylinder, a check valve provided between the second chamber of the tilt cylinder and a connection position between the first and second oil channels, a fourth oil channel connected to the third oil channel, and a switch valve provided on the second oil channel and connected with the fourth oil channel. The switch valve has a connection state where communication between the first oil channel and the second chamber of the trim cylinder is closed, and communication between the fourth oil channel and the second chamber of the trim cylinder is open.

An outboard motor lifting device includes a hydraulic source, a first oil channel connecting the hydraulic source with a second chamber of a tilt cylinder, a second oil channel connecting the first oil channel with a second chamber of a trim cylinder, a third oil channel connecting the hydraulic source with a first chamber of the tilt cylinder, a check valve provided between the second chamber of the tilt cylinder and a connection position between the first and second oil channels, a fourth oil channel connected to the third oil channel, and a switch valve provided on the second oil channel and connected with the fourth oil channel. The switch valve has a connection state where communication between the first oil channel and the second chamber of the trim cylinder is closed, and communication between the fourth oil channel and the second chamber of the trim cylinder is open.

A method for positioning a jack plate coupled to a transom of a marine vessel includes: in response to receiving a first store command, storing a measured first position of a movable part of the jack plate in connection with a measured first vessel speed; in response to receiving a second store command, storing a measured second position of the movable part of the jack plate in connection with a measured second vessel speed; in response to determining that the marine vessel is operating at or above the first vessel speed, but below the second vessel speed, automatically positioning the movable part of the jack plate at the stored first position; and in response to determining that the marine vessel is operating at or above the second vessel speed, automatically positioning the movable part of the jack plate at the stored second position.

A method for positioning a jack plate coupled to a transom of a marine vessel includes: in response to receiving a first store command, storing a measured first position of a movable part of the jack plate in connection with a measured first vessel speed; in response to receiving a second store command, storing a measured second position of the movable part of the jack plate in connection with a measured second vessel speed; in response to determining that the marine vessel is operating at or above the first vessel speed, but below the second vessel speed, automatically positioning the movable part of the jack plate at the stored first position; and in response to determining that the marine vessel is operating at or above the second vessel speed, automatically positioning the movable part of the jack plate at the stored second position.

A system for controlling one or more propulsion devices of a marine vessel. The system includes circuitry configured to: receive a steering angle command for a propulsion device of the marine vessel; receive a trim position of the propulsion device; and generate a steering actuator position command for the propulsion device based on the steering angle command and the trim position of the propulsion device.

A system for controlling one or more propulsion devices of a marine vessel. The system includes circuitry configured to: receive a steering angle command for a propulsion device of the marine vessel; receive a trim position of the propulsion device; and generate a steering actuator position command for the propulsion device based on the steering angle command and the trim position of the propulsion device.

A boat motor mounting for mounting a trolling motor to a boat. The boat motor mounting includes a stern bracket adapted to be secured to a transom of the boat. The stern bracket is comprised of a front vertical plate which is adapted to extend into the interior of the boat, a rear vertical plate which is adapted to extend outward of the boat and downward from the upper surface of the transom of the boat, a horizontal plate adjoining the front vertical plate and the rear vertical plate; and a platform mounted to an outer surface of the horizontal plate and designed to support the trolling motor.

A boat motor mounting for mounting a trolling motor to a boat. The boat motor mounting includes a stern bracket adapted to be secured to a transom of the boat. The stern bracket is comprised of a front vertical plate which is adapted to extend into the interior of the boat, a rear vertical plate which is adapted to extend outward of the boat and downward from the upper surface of the transom of the boat, a horizontal plate adjoining the front vertical plate and the rear vertical plate; and a platform mounted to an outer surface of the horizontal plate and designed to support the trolling motor.

A pontoon boat including a thruster system is disclosed. The pontoon boat executes various operations relating to a speed and heading of the pontoon boat.