Hybrid marine power combines electric drives with the power and range of hydrocarbon/alternative fuels.

Like the hybrid car; the system is controlled and optimised by a computer.

In the case of a hybrid marine power system, renewable energy available on the water such as solar power can also charge batteries and the vessel can sail.

The above is a "series" hybrid layout i.e. all-electric drive with generators and solar supplying electricity to the batteries. A "parallel" hybrid is where both the internal combustion engines and the electric motors can drive the propeller. There are advantages and disadvantages of both systems.

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