In this paper, a vessel model for the performance of wind-assisted ships is combined with a routing tool to assess the fuel savings available from the installation of both one and two Flettner rotors when travelling along a Great Circle Route path. This is combined with an economic analysis to assess commercial viability for these hybrid concepts. The case study is performed in collaboration with DAMEN shipyards, who have provided a design for a wind-assist concept to sail in the Baltic Sea, that, since January 2015, is an Emission Control Area where a sulphur limit content of 0.1 % is enforced on the ship fuels. Results for this case study are presented in terms of fuel savings and payback period analysis, where the reference case is an identical ship sailing without wind propulsors. For the 5,150 dwt general cargo vessel travelling at a speed of 10 knots, average fuel savings of 2.99% were obtained in the Baltic Sea for the single Flettner scenario, and 6.11% for the double Flettner scenario. A discussion of key engineering and design constraints for these ships is included.

Original languageEnglish
Title of host publicationProceedings of the International Conference Power & Propulsion Alternatives for Ships
Place of PublicationLondon, UK
PublisherThe Royal Institution of Naval Architects - RINA
Number of pages16
ISBN (Electronic)9781909024878
Publication statusPublished - 2019
EventInternational Conference Power & Propulsion Alternatives for Ships - London, United Kingdom
Duration: 23 Jan 201923 Jan 2019


ConferenceInternational Conference Power & Propulsion Alternatives for Ships
CountryUnited Kingdom

ID: 51490921