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Wind Assisted Ship Propulsion Design Explorations

As part of MARIN’s strategy to support the transition towards zero emission shipping, we are continuing research on Wind Assisted Ship Propulsion (WASP). Although WASP is seen as having the potential to significantly reduce power consumption, a lot of research still has to be done into how to integrate it into modern designs, logistics and operations.

A Rogier Eggers

recent project related to ships using WASP concerned the influence of a ship’s main particulars on overall

performance. The principal objective was to see how the design trends work for such ships and the specific focus was on wide versus narrow hulls, which is a design trade- off that also exists for sailing yachts. A wider ship has more heel stability and consequently can carry a larger sail plan. A larger sail plan means more propulsion. On the other hand, a wider ship, beyond a certain width, exhibits more resistance. What does this trade-off look like for wind assisted merchant vessels?

Case vessels and wind propulsors The pre-existing “Delft Wind-Assist Series” of hulls and related force predictions was reused. This dataset was generated at MARIN in collaboration with Delft University of Technology. The mother vessel in the series is the “WASP” design by Dykstra Naval Architects (previously named “Ecoliner”). The design is equipped with a single propeller and rudder. For the purpose of this project the design was also equipped with a centre line skeg. The mother shape was systematically stretched longitudinally and transversely, while the displacement

A selection of extreme dimensions in the series 12 report

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