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October 2011 www.sname.org/sname/mt Published by the Society of Naval Architects and Marine Engineers 601 Pavonia Avenue, Jersey City, NJ 07306 Phone: 201-798-4800 Fax: 201-798-4975 www.sname.org/sname/mt Edward Comstock President ecomstock@sname.org Erik Seither Executive Director eseither@sname.org Susan Evans Grove Publications Director sevans@sname.org Douglas R. Kelly Editor dkelly@sname.org Alan Rowen Book Review Editor arowen@sname.org Dave Weidner, Advertising Sales advertising@sname.org Tommie-Anne Faix, Publications Sales Associate tfaix@sname.org Editorial Advisory Board Design Bates Creative Group, Silver Spring, MD O cers of the Society Edward Comstock, President Erik Seither, Executive Director Bruce Rosenblatt, Treasurer Regional Vice Presidents 2011:Central & Gulf: Frank G. Bercha Atlantic South: William M. Hayden Paci?c: William B. Hale Atlantic North: John Volc International: Stavros Hatzigrigoris 2012: Paci?c: Gary Thompson Atlantic North: William Caliendo 2013: Central & Gulf: Joseph H. Comer, III Atlantic South: H. Paul Cojeen International: John Kokarakis Publication in (mt) Marine Technology does not constitute an endorsement of any product or service referred to, nor does publication of an advertisement represent an endorsement by the Society of Naval Architects and Marine Engineers or the magazine. All articles represent the viewpoints of the authors and are not necessarily those of the Society of Naval Architects and Marine Engineers, or the magazine. Subscriptions: (mt) Marine Technology is circulated to all members of the Society as a portion of their dues allocation. Non-member subscriptions are $120 annually for the U.S. and possessions; single copies are $35. For international non-members, subscriptions are $130 annually; single copies are $35. (mt) Marine Technology is dedicated to James Kennedy, 1867-1936, marine engineer and longtime member of the Society, in recognition and appreciation of his sincere and generous interest in furthering ship design, shipbuilding, ship operation, and related activities. (from the editorial board ) October 2011 The last several years have been a period of exciting innovation in marine technology towards aordable green solutions. Whether motivated by the desire to save on fuel costs, or by nding ways to reduce the costs of regulatory compliance, the industry has been engaged in concept exploration and technology transition in almost every aspect of ship design and construction. ese trends have inuenced hydrodynamic design, power and propulsion, and auxiliary systems design as more eective and aordable means are sought to reduce emissions and manage waste streams. is issue of (mt) magazine focuses on these green trends and associated emerging technologies and their implications for ship design and construction. Our vessel report showcases the platform supply vessel, Viking Energy , designed by Wärtsilä Ship Design and built by Kleven Verft in Norway. is dual-fuel vessel, capable of running on LNG, dramatically reduces NO X, SO X, and CO 2 emissions and is the rst of six currently under construction in a planned eet of 12 LNG-fueled vessels. One of our features spotlights the Triality concept very large crude carrier (VLCC) that addresses several emerging trends in VLCC design including environmental performance. Our authors tell us that Triality would eliminate the need for ballast water treatment while reducing CO 2 emissions. Another of our features explores the current state of the art in emissions mitigation tech- nologies, and emerging technologies that may oer improved performance at reduced cost. In the MT Notes department, we look at hydrodynamic devices for ship propulsive eciency improvement that promise to reduce fuel costs. Practical design considerations for using LNG as a vessel fuel are presented in this issue, including technical as well as economic and logis- tical concerns, and our friends at Norwegian Cruise Line share with us the unique challenges of managing shipboard waste streams in the cruise ship industry. Recognizing that this is not only a commercial issue, this issue also examines how government vessels can benet by lever- aging commercial sustainability. In addition to technical features and MT Notes, this issue of (mt) also delves into regula- tory and policy considerations. Our Historical Note traces the evolution of the environmentally friendly tanker, and the implications of the IMOs Energy Eciency Design Index and the Ship Energy Eciency Management Plan are examined. And we review SNAMEs involvement in these areas through the Technical and Research Environmental Engineering Committee and the Ocean Renewable Energy panel. Of course, we can only scratch the surface here. Nonetheless, we think you will nd that this issue of (mt) will serve as a timely and valuable reference that will inuence your thinking as you work to reduce operating costs, as well as the costs of compliance, in your own projects. Matthew P. Tedesco SNAME (mt) Editorial Board The Green Ship Keith Michel, Chair Rod Allan Chris Cikanovich Chris Dlugokecki Vicki Dlugokecki Norbert DoerryJay Edgar Andrew Harville Peter Tang Jensen Peter Noble Jeom Paik Hans Payer Erik SeitherMatt Tedesco is dual-fuel vessel, capable of running on LNG, dramatically reduces NO X, SO X, and CO2 emissions and is the rst of six currently under construction in a planned eet of 12 LNG-fueled vessels.