Abstract: A marine drive includes a drive assembly which is operable in a neutral mode, in a forward mode for generating a forward thrust force in a body of water, and in a reverse mode for generating a reverse thrust force in the body of water. A water intake is configured to receive cooling water from the body of water for cooling at least one component of the drive assembly, and an electric pump configured to draw the cooling water into the drive assembly via the water intake. A control system is configured to modify a speed and/or a direction of the electric pump to facilitate a clearance of debris from the water intake.

Abstract: A marine battery provides power to a marine vessel. A cooling system comprises a substantially air-tight housing; at least one battery disposed in the housing; a heat exchanger circulating cooling fluid through the housing; and a fan circulating cooling air along a series of flow paths comprising a first flow path across the heat exchanger and the at least one battery and a second flow path returning to the fan. In one example the cooling fluid comprises seawater.

Abstract: A method and apparatus for controlling the temperature of batteries in a hybrid marine vessel utilize a compartment to store the batteries and various conduits to conduct air to and from that compartment. A heat exchanger can draw air from the compartment and cool the air for use in the cabin of the marine vessel. The air from the cabin can be directed into the compartment to provide a flow of air that carries heat away from the batteries in the compartment and toward the heat exchanger.