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(contents )(mt) Marine Technology (ISSN 2153-4721) is published quarterly in January, April, July, and October by the Society of Naval Architects and Marine Engineers, 601 Pavonia Avenue, Jersey City, NJ 07306. Periodicals postage paid at Jersey City, NJ and additional mailing o ces. Annual subscription rates: For U.S. and possessions, $120; single copy, $35. For international: $135; single copy, $35. Copyright © 2012 by the Society of Naval Architects and Marine Engineers. POSTMASTER: Send address changes to the Society of Naval Architects and Marine Engineers, 601 Pavonia Avenue, Jersey City, NJ 07306. July 2012 www.sname.org/sname/mt [] The Virtual Carrier BY ROB LISLE, BILL LAZ, AND ROBIN P. PENLEY Newport News Shipbuilding combines M&S technology with real-world testing to assess the next generation aircraft carrier [] 6 ft Clearance Clearance A publication of the Society of Naval Architects and Marine Engineers ON THE COVER: Being able to model such elements as wind ow over a vessel?s deck can enable faster and more accurate evalu- ation of alternative hull forms. (mt) thanks Joe Gorski of the Computational Hydromechanics Division at the Naval Surface Warfare Center, Carderock, for supplying the cover image for this issue. COVER DESIGN BY BATES CREATIVE GROUP Simulating Evacuability BY DRACOS VASSALOS AND YASMINE HIFIHow modeling pedestrian dynamics can enable safer and faster evacuation of passengers Simulate. Update. Repeat. BY CRAIG DICKSONFor the Port of Long Beach, modeling has been a key part of successful expansion A Sound Approach BY RAYMOND FISCHER, JESSE SPENCE, AND RONALD DEMPSEY Using computer aided design methods for modeling and predicting noise and vibration Modeling O&S Costs BY MARY MERTZ AND STEPHEN CURRAMOSCAM enables cost estimating for ships and shipboard systems Fire Spread BY NICHOLAS A. DEMBSEY, BRIAN J. MEACHAM, KURT SCHEBEL, MATTHEW JOHANN, JEFFREY TUBBS, AND JARROD ALSTON How a simpli ed ame spread model, integrated with CFD tools, can enable a go/no-go screening approach for assessing material ame spread potential From the Editorial Board Feature Contributors Indust ry Events Policy Brie ng Founders and Leaders Marine Technology Notes Education Abstracts In Review Glossary Historical Note July 2012