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ISSN 2083-6473
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Tomasz Neumann
 

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TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
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Simulation study on the Influence of EEDI Requirements to Shiphandling in Heavy Weather
1 Tokyo University of Marine Science and Technology, Tokyo, Japan
2 University of Tokyo, Tokyo, Japan
ABSTRACT: In order to reduce the CO2 emission from ships, International Maritime Organization executes the restriction of Energy Efficiency Design Index (EEDI) which limits amount of CO2 when freight of one ton is carried at one mile. Although the realization of higher efficiency of main engine without reduction of engine output is the best solution, it might be impossible. To comply with the EEDI requirements, it is assumed that the ship’s engine power becomes smaller than the existing ship by means of improving the ship propulsive efficiency. However, shiphandling in rough seas is expected to become difficult when the engine power is reduced. In this paper it is shown that the influence of the degraded main engine exerts on the safety of shiphandling in heavy weather based on the simulation study. In these experiments, both the simulation model that decreased engine power corresponding to EEDI requirement and that with the conventional engine power were tested, and masters in active service maneuvered the test ships in the rough seas.
REFERENCES
MEPC. Interim guidelines on the method of calculation of the energy design index for new ships, Technical report, IMO, August 2009, MPEC 1/Crire.681, 2009-08-17.
MEPC. Guidelines for voluntary use of the ship energy efficiency operational indicator, Technical report, IMO, August 2009, MPEC 1/Crire.681 ANNEX, 2009-08-17.
MEPC. Reduction of GHG emissions from ships, Technical report, IMO, August 2013, MPEC 65/22, 2013-05-24.
Yasukawa H.. Simulations of Ship Maneuvering in Waves. Journal of the Japan Society of Naval Architects and Ocean Engineers. 2008, Vol.7, No.0, p.163. - doi:10.2534/jjasnaoe.7.163
Citation note:
Nishizaki C., Okazaki T., Yabuki H., Yoshimura Y.: Simulation study on the Influence of EEDI Requirements to Shiphandling in Heavy Weather. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 13, No. 4, doi:10.12716/1001.13.04.19, pp. 855-860, 2019

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