Ship&Offshore | Issue 05/2022
AiP for Suction Wing wind assistance
Boundary layer suction | French partners Crain Technologies and REEL have been granted Approval in Principle (AiP) by Bureau Veritas (BV) for Suction Wing SW270, an auxiliary wind propulsion device designed to provide additional forward thrust for cargo ships. The concept, based on the principle of boundary layer suction, has a high lift coefficient and a lift-to-drag ratio that provides good performance in upwind conditions and for ships sailing at relatively high speeds, BV said. Grids located on both sides of the wing section create a suction force that draws air around the wing section from the outside to the inside of the wing....