The joint-stock company “EMS” is a maritime service provider that attracts attention as a “first mover” through innovative ship projects. The island ferry MV “Ostfriesland” was converted from conventional marine diesel to environmentally friendly LNG (liquefied natural gas) for the first time in Europe as a pilot project in 2015. A first German LNG new-build vessel joined the fleet in the same year. The subsidiary EMS Maritime Offshore GmbH offers comprehensive services as a maritime service provider in the offshore sector. Here, maritime applications for battery and hydrogen hybrid propulsion systems as well as basic Power to X applications for the maritime industry are considered and implemented.