A ship propulsion device includes three or more propulsion units, a malfunction detection unit, and a control unit. The control unit is configured to control the three or more propulsion units. The three or more propulsion units are disposed with left-right symmetry. Based on a malfunction detected in any one of the three or more propulsion units by the malfunction detection unit while the three or more propulsion units are operating, the control unit is configured to stop the propulsion unit in which the malfunction is detected, and, on a left side and a right side of a hull, stop at least one propulsion unit of the three or more propulsion units disposed on the side opposite from the side on which the propulsion unit in which the malfunction is detected is disposed.

A ship propulsion device includes three or more propulsion units, a malfunction detection unit, and a control unit. The control unit is configured to control the three or more propulsion units. The three or more propulsion units are disposed with left-right symmetry. Based on a malfunction detected in any one of the three or more propulsion units by the malfunction detection unit while the three or more propulsion units are operating, the control unit is configured to stop the propulsion unit in which the malfunction is detected, and, on a left side and a right side of a hull, stop at least one propulsion unit of the three or more propulsion units disposed on the side opposite from the side on which the propulsion unit in which the malfunction is detected is disposed.

A sailing assisting system is provided in which a sailing assist for a vessel which enters a specific water area where sailing of the vessel is limited is realized through a simple configuration and in which a steersman is prevented from having strange feeling. A sailing assisting system includes movable controlling devices (a shift and throttle controller, a steering device, a trim switch), actuators (a rotational shaft drive unit, a shaft drive unit, a switch drive unit) for driving these controlling devices, and a control unit for executing a notification operation and controlling the actuators to limit movable ranges of the controlling devices if a hull is determined to stay within a specific water area where the sailing of the hull is limited based on information on the specific water area and information on the position of the hull.

A sailing assisting system is provided in which a sailing assist for a vessel which enters a specific water area where sailing of the vessel is limited is realized through a simple configuration and in which a steersman is prevented from having strange feeling. A sailing assisting system includes movable controlling devices (a shift and throttle controller, a steering device, a trim switch), actuators (a rotational shaft drive unit, a shaft drive unit, a switch drive unit) for driving these controlling devices, and a control unit for executing a notification operation and controlling the actuators to limit movable ranges of the controlling devices if a hull is determined to stay within a specific water area where the sailing of the hull is limited based on information on the specific water area and information on the position of the hull.

An attitude detection device includes a rudder angle sensor, a speed sensor, an inertia sensor, and a control device. The rudder angle sensor detects a rudder angle of a ship. The speed sensor detects a speed of the ship. The inertia sensor detects information related to an inertial force applied to the ship. The control device finds a centrifugal force applied to the ship on the basis of a signal output from each of the rudder angle sensor and the speed sensor. The control device acquires an inclination of the ship on the basis of the signal output from the inertia sensor. The control device corrects the inclination of the ship on the basis of the output of the inertia sensor according to the centrifugal force applied to the ship.

Provided are systems, methods, and computer readable media for predicting a vessel rendezvous, and systems, methods, and computer readable media for generating a vessel rendezvous prediction model. The method can include generating or receiving a rendezvous a rendezvous prediction model; receiving vessel data for a plurality of vessels from one or more sources; constructing a vessel trajectory for each vessel of the plurality of vessels based on the vessel data, each vessel trajectory comprising one or more trajectory segments; providing the plurality of constructed vessel trajectories to the rendezvous prediction model; and generating, at the processor, a rendezvous prediction output from the rendezvous prediction model.

Provided are systems, methods, and computer readable media for predicting a vessel rendezvous, and systems, methods, and computer readable media for generating a vessel rendezvous prediction model. The method can include generating or receiving a rendezvous a rendezvous prediction model; receiving vessel data for a plurality of vessels from one or more sources; constructing a vessel trajectory for each vessel of the plurality of vessels based on the vessel data, each vessel trajectory comprising one or more trajectory segments; providing the plurality of constructed vessel trajectories to the rendezvous prediction model; and generating, at the processor, a rendezvous prediction output from the rendezvous prediction model.

An electric hybrid outboard engine for a traditional fuel-based outboard motor of a boat that can be retrofitted. The electric hybrid outboard engine includes a hybrid motor and a control unit. The hybrid motor can be switched between an active mode and a passive mode, the hybrid motor in the active mode acts as a motor to drive the propeller using electrical energy stored in a battery, and in the passive mode act as a generator configured to be driven by rotations of the shaft for charging the battery. The control unit can control the engaging and disengaging of the hybrid motor to the shaft and switching of the hybrid motor between the active mode and the passive mode.

A marine vessel may include thrusters, an electrical system, and multiple flywheels (i) to supply electrical power to the electrical system and (ii) to stabilize marine vessel roll and/or pitch angle. A flywheel controller may be configured to control electrical power output from the flywheels to the electrical system, and control axis of rotation of one or more rotors of respective flywheels to compensate for roll and/or pitch angles of the marine vessel. A method of powering and stabilizing a marine vessel may include supplying, by flywheels, electrical power to an electrical system to supply electrical power to thrusters and electrical equipment. Flywheel(s) may be used to stabilize marine vessel roll and/or pitch angle. Electrical power output may be controlled from the flywheels to the electrical system. Axis of rotation of one or more flywheel rotors may be controlled to compensate for roll and/or pitch angles of the marine vessel.

A marine vessel may include thrusters, an electrical system, and multiple flywheels (i) to supply electrical power to the electrical system and (ii) to stabilize marine vessel roll and/or pitch angle. A flywheel controller may be configured to control electrical power output from the flywheels to the electrical system, and control axis of rotation of one or more rotors of respective flywheels to compensate for roll and/or pitch angles of the marine vessel. A method of powering and stabilizing a marine vessel may include supplying, by flywheels, electrical power to an electrical system to supply electrical power to thrusters and electrical equipment. Flywheel(s) may be used to stabilize marine vessel roll and/or pitch angle. Electrical power output may be controlled from the flywheels to the electrical system. Axis of rotation of one or more flywheel rotors may be controlled to compensate for roll and/or pitch angles of the marine vessel.