Skip to main navigationSkip to main content
The University of Southampton
Southampton Marine and Maritime Institute

Proposal for Ballast-freeing Ship and Studies of its Performance  Seminar

12:00 - 13:00
29 March 2012
B22/Rm2001 Coffee, Tea and refreshment will be available.

For more information regarding this seminar, please email Dr.Yeping Xiong at .

Event details

The destruction of marine ecosystems caused by the extraordinary reproduction of alien marine species that are believed to be introduced into new sea areas in the ballast water of ships has been reported worldwide.

To cope with this new marine environmental problem, the International Maritime Organization (IMO) adopted a new convention in 2004 that regulates the maximum number of marine species in a unit volume of ballast water that is discharged at the destination ports. In order to meet the requirements of the convention, ballast water treatment systems are under development. However, there remain a lot of technological difficulties and problems to be resolved in the development of those systems.

In this presentation, we propose a technological concept that solves this environmental problem from an entirely different viewpoint: namely, a ship that does not transfer ballast water. According to the model experiments and numerical analyses examining the effectiveness of the concept, we confirmed that the proposed system can be a practical solution to the ballast water problem in ships.


Biographical note:

Professor Makoto Arai graduated from the department of Naval Architecture, The University of Tokyo, and obtained the degree of Doctor of Engineering from the same University. He is now Professor of the Department of Systems Design for Ocean-Space, Yokohama National University, and Director of the Japan Society of Naval Architects and Ocean Engineers. His main area of research interest includes the design optimization of ships, numerical modeling of hydrodynamic impact loads, and maritime logistics.


Speaker information

Professor Makoto Arai ,Yokohama National University, Japan

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.