A ship-mounted auxiliary sail system featuring a plurality of sail units mountable and movable about the ship on a rail system. The sail units can have automatic reefing safety features and/or automatic mast release safety features.

A ship-mounted auxiliary sail system featuring a plurality of sail units mountable and movable about the ship on a rail system. The sail units can have automatic reefing safety features and/or automatic mast release safety features.

A vessel operation system includes an outboard motor or other propulsion apparatus on a hull, an electrically-driven trolling motor mounted externally to the hull, and a controller configured or programmed to control the outboard motor and the trolling motor. The outboard motor generates a thrust and electric power with an engine. The trolling motor generates a thrust by being driven by electric power from a battery that is charged by the electric power generated by the outboard motor. In a state in which the trolling motor is generating the thrust, the controller is configured or programmed to control the outboard motor so as to generate an assist thrust that hastens a behavior of the hull by the thrust generated by the trolling motor.

A vessel operation system includes an outboard motor or other propulsion apparatus on a hull, an electrically-driven trolling motor mounted externally to the hull, and a controller configured or programmed to control the outboard motor and the trolling motor. The outboard motor generates a thrust and electric power with an engine. The trolling motor generates a thrust by being driven by electric power from a battery that is charged by the electric power generated by the outboard motor. In a state in which the trolling motor is generating the thrust, the controller is configured or programmed to control the outboard motor so as to generate an assist thrust that hastens a behavior of the hull by the thrust generated by the trolling motor.

A transmission system for a hybrid power plant, such as a hybrid propulsion system of a marine vessel, is described. The transmission is configured to selectively couple a primary mover and/or a secondary mover to an output of the transmission for providing a power output, and optionally selectively couple the primary mover to the secondary mover, decoupling the output, for electrical energy generation in a compact and light-weight design.

A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, includes a first battery that supplies power to the propulsion device, a second battery that supplies power to accessories of the vessel, a first open circuit voltage sensor that detects an open circuit voltage of the first battery, a second open circuit voltage sensor that detects an open circuit voltage of the second battery, and a switch that is turned on/off to open and close a current path between the first battery and the second battery.

A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, includes a first battery that supplies power to the propulsion device, a second battery that supplies power to accessories of the vessel, a first open circuit voltage sensor that detects an open circuit voltage of the first battery, a second open circuit voltage sensor that detects an open circuit voltage of the second battery, and a switch that is turned on/off to open and close a current path between the first battery and the second battery.

A powertrain for a marine vessel, comprising an internal combustion engine, a transmission, a first drive unit having a first propeller and a second drive unit having a second propeller, a first electric motor and a second electric motor, where the internal combustion engine is drivingly connected to the first drive unit and the second drive unit through the transmission, that the first electric motor is drivingly connected directly to the first drive unit and that the second electric motor is drivingly connected directly to the second drive unit.

A powertrain for a marine vessel, comprising an internal combustion engine, a transmission, a first drive unit having a first propeller and a second drive unit having a second propeller, a first electric motor and a second electric motor, where the internal combustion engine is drivingly connected to the first drive unit and the second drive unit through the transmission, that the first electric motor is drivingly connected directly to the first drive unit and that the second electric motor is drivingly connected directly to the second drive unit.

A marine AC generator system includes a marine generator driven by an internal combustion engine and configured to generate an AC current and a rectifier configured to rectify the AC current to provide a DC current. At least one battery is configured to receive and be charged by the DC current. A battery powered inverter is configured to be powered by the at least one battery and to generate a variable current output frequency such that an AC electrical power is provided to a load when the marine generator is not running.