ZEMSHIPS is a project for the realization of the first fuel cell powered passenger ship world wide in the category of up to 100 passengers. The project is financially supported by funds of the EU-LIFE program. The idea was born to operate a fuel cell passenger in the city of Hamburg in 2005. ZEMSHIPS stands for “zero emission ships”. The fuel cell passenger ship will be operated on the Alster lake, a very sensible part of the inner city of Hamburg. Therefore operating a passenger ship without emitting any CO2 has been a major objective of the project. Two fuel cell stacks manufactured by Proton Motor power the ship, offering a total output of 50 KW each. The ship has a total carrying capacity of up to 100 passengers.