Haddara's research wins inaugural award

Dr. Mahmoud Haddara has won Memorial University's first annual Ocean Engineering Research Award for his research on ship stability. The award is given by the Ocean Engineering Research Centre (OERC) in the Faculty of Engineering and Applied Science. Dr. Haddara received his award on July 3 from Dr. Neil Bose, director of the OERC.

The Ocean Engineering Research Award, which consists of a $1,000 grant and a framed scroll, recognizes exceptional innovation in a current research project and is open to applicants within the OERC.

Dr. Haddara's project involved two main goals: estimating transverse stability parameters for a ship at sea, and developing a ship stability monitoring system. The project began in 1992, and was supported by the work of two graduate students, as well as by Dr. Momen Wishahy, who was a member of C-CORE at the time but who later left to run Marine Technologies Inc.

The ability to assess and monitor stability on a ship would undoubtedly increase safety. Dr. Haddara's research was thorough, taking into account unknown changes in the ship's loading and environmental conditions, and the roll response of the vessel in random waves.

In the summary of his work which he submitted to the Ocean Engineering Research Award competition, Dr. Haddara described how existing methods of assessing ship stability have not always worked.

"Small ships (offshore supply or fishing vessels) operating offshore Newfoundland are subject to ever changing loading (including ice accretion) and environmental conditions whose effects are detrimental to the safety of the ship. These effects are very difficult to quantify using available methods."

Dr. Haddara developed an equation to determine the free rolling motion of a ship in random waves, using neural networks and a mathematical model. He has tested his methodology using synthetic data, model experiments and full scale data, and the results have shown that accurate estimates of stability parameters at sea can be obtained. The methods established by this research project have been used by industry to design and produce a stability monitoring system for ships.

Aspects of Dr. Haddara's research were supported by the Natural Sciences and Engineering Research Council, the Atlantic Canada Opportunities Agency, C-CORE, and the Canadian Centre for Fisheries Innovation.


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