Hybrid generators can reduce emissions from passenger ships, especially on long journeys

Schematic representation of fuel cells, batteries and fuel tanks of a hybrid generator system in the hull of a passenger ship
Hybrid generators can reduce emissions from passenger ships, especially on long journeys
The hybrid ship generator consisting of fuel cells (yellow) and batteries (green) generates electricity and heat on board. These can replace current marine diesel and gas engines. The tanks (blue) can be designed for different fuels.
Credit:

DLR/Wolfram Scheible.