Marine Propulsors and Current Turbines: State of the Art and Current Challenges

1Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109, USA 2 Institute of Fluid Dynamics and Ship Theory, Hamburg University of Technology, Schwarzenbergstrase 95 C, 21073 Hamburg, Germany 3Applied Research Laboratory, The Pennsylvania State University, University Park, PA 16804, USA 4CNR-INSEAN, Italian Ship Model Basin, 00128 Rome, Italy 5Department of Naval Architecture and Ocean Engineering, Pusan National University, Republic of Korea