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Experimental Studies on Seakeeping and Maneuverability of Ships in Adverse Weather Conditions

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The introduction of the energy efficiency design index (EEDI), which is applicable for various types of new-built ships after January 1, 2013, raised concerns regarding the sufficiency of propulsion power and steering devices to maintain maneuverability in adverse conditions. This was the motivation for the initiation of the EU research project SHOPERA (Energy Efficient Safe SHip OPERAtion, 2013‐2016, http://www.shopera.org). The aim of this article is the development of suitable methods, tools, and guidelines to effectively address the above concerns and to enable safe and green shipping. Within the framework of SHOPERA, a comprehensive experimental program of more than 1300 different model tests for three ship hulls of different geometry and hydrodynamic characteristics has been conducted by four leading European maritime experimental research institutes: MARINTEK, Norway; CEHIPAR, Spain; Technische Universität Berlin, Germany; and Flanders Hydraulics Research, Belgium. The tested hull types refer to two public domain designs, namely the KVLCC2 tanker and the Duisburg Test Case (DTC) container ship, as well as to a small RoPax ferry design, which is a proprietary hull design of a member of the SHOPERA consortium. The conducted tests were distributed among the four research institutes to benefit from the unique possibilities of each facility and to gain added value by establishing data sets for the same hull model and test type at different under keel clearances. This article presents the scope of the SHOPERA model test program for the two public domain hull models—the KVLCC2 and the DTC. The main particulars and loading conditions for the two vessels as well as the experimental setup is provided to support the interpretation of the experimental data that is presented. The focus lies on the added resistance and drift forces at zero and moderate forward speed, propulsion, and rudder force tests in waves and the assessment of maneuverability of ships in waves, as compared to calm water conditions.
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Keywords: EEDI; IMO; added resistance; adverse conditions; drift forces; maneuverability; minimum powering; model testing; seakeeping; shallow water

Document Type: Research Article

Publication date: 01 September 2017

This article was made available online on 21 July 2017 as a Fast Track article with title: "Experimental Studies on Seakeeping and Maneuverability of Ships in Adverse Weather Conditions".

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  • The Journal of Ship Research is a quarterly publication providing highly technical papers on applied research in hydrodynamics, propulsion, ship motions, structures, and vibrations. While the Journal requires that papers present the results of research that advances ship and ocean science and engineering, most contributions bear directly on other disciplines, such as civil and mechanical engineering, applied mathematics, and numerical analysis. High quality papers are contributed from the U.S., Canada and overseas, with representation from established authorities as well as new researchers.
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