For all the naval engineers:
Enercon E-Ship 1 A Wind-Hybrid Commercial Cargo Ship 4th Conference on Ship Efficiency Hamburg, 23-24. September 2013
The E-Ship 1 was equipped with nine Mitsubishi marine diesel engines[6][7] with a total output of 3.5 MW. The ship's exhaust gas boilers are connected to a Siemens downstream steam turbine, which in turn drives four Enercon-developed Flettner rotors. These rotors, resembling four large cylinders mounted on the ship's deck, are 27 meters tall and 4 meters in diameter. The speed and direction of rotation varies up to 300RPM depending on the prevailing wind speed and direction relative to the ship. Due to technical problems the Mitsubishi diesel generators were replaced by Caterpillar diesel generators in 2013. The new Caterpillar generators generate a total power of 6.3 MW.