This Quarterly publication publishes highly technical papers on applied research in hydrodynamics, propulsion, ship motions, structures, and vibrations. While the Journal of Ship Research 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.