Page 14: of Maritime Reporter Magazine (December 2022)
Great Ships of 2022
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Wind Propulsion and the
Race to Decarbonization
Anemoi Marine Technologies
By Vincenzo Severino, Technical Sales Engineer ind propulsion, which was used to power System, which sees the Rotor Sails move transversely across ships for thousands of years before fossil the deck to avoid inference with cargo handling; and the struc- fuels became readily available, is making a tural integration for a ship design with four of Anemoi’s fold-
Wcomeback. As a completely renewable re- ing (tilting) 5x35m Rotor Sails. source, wind is an appealing and bene? cial option in the race Lloyd’s Register assessed the calculation used to estimate towards decarbonization. the impact the Rotor Sails will have on the Energy Ef? ciency
Rotor Sails make use of the aerodynamic phenomenon Design Index (EEDI) and validated that the newbuild New- known as the ‘Magnus Effect.’ As the cylinder rotates within castlemax would have its EEDI score reduced from 1.92 to an air? ow, a forward thrust force perpendicular to the apparent 1.37 (29% reduction) by installing six 5x30m Rail Rotor Sails wind direction is created, which delivers additional thrust to and 1.47 (23% reduction) by installing four 5x35m Folding the vessel. The thrust generated can either provide additional Rotor Sail.
vessel speed or maintain vessel speed by reducing power from EEDI is a signi? cant driver for the installation of Rotor Sail the main engine. The tall cylindrical sails can be installed on technology and, as we grow closer to the implementation of the main deck, bow or elsewhere with suf? cient space. EEXI and CII, they too become important incentives for Rotor
They were ? rst installed on a vessel over 100 years ago. Sails, along with the overarching reductions in fuel consump-
But through research and innovation, Anemoi engineers have tion and associated emissions. reimagined the technology for modern use.
In June, Lloyd’s Register granted Approval in Principle Installation (AIP) for a SDARI (Shanghai Merchant Ship Design and Re- Incorporating Anemoi Rotor Sails is a straightforward pro- search Institute) designed 210,000 DWT Newcastlemax bulk cess because wholesale changes to the vessel structure, or dry carrier installed with Anemoi Rotor Sails to improve ef? cien- docking, is not required. The Rotor Sails, along with all the cy and reduce environmental impact. necessary equipment, are delivered dockside. Each Rotor Sail
The Newcastlemax AIP is part of a joint development proj- is installed in a single crane lift and connected to the foun- ect (JDP), signed in 2020, with Anemoi Marine Technologies, dation on the ship’s deck once the vessel integration work is
Lloyd’s Register, and SDARI and brings together the OEM, complete.
classi? cation society, ship designer, and ship owner to devel- Prior to this taking place, a feasibility study - which is op a series of energy-ef? cient vessel designs equipped with unique to each vessel - will have been conducted to determine
Rotor Sails. Oldendorff Carriers is the shipowner partner for the optimal Rotor Sail positioning. This is to maximize perfor- this Newcastlemax design. mance within the vessel constraints and the required Deploy-
The AIP covers the structural integration for a ship design ment System for the vessel. with six 5x30m Rotor Sails and Anemoi’s Rail Deployment The vessel integration stage is crucial to the process and in- 14 Maritime Reporter & Engineering News • December 2022
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