A computer program BEShiWa, based on Boussinesq's equations for the far-field flow and on a slender-body theory for the near-ship flow, is a applied to predict the squat, sinkage and trim of ships in shallow-water of varying depth with and without lateral restriction. It covers geometrical, dynamic and environmental effects, yields a good agreement with model experiments, and can be, therefore, used in many practical cases. Due to the strong interaction between the ship's squat and the water-bottom a special attention has to be paid for ships operating over a varying topography.
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The authors are grateful to cand. arch. nav. B. Friedhoff and cand. arch. nav. J. Hundemer for their assistance in computation and post-processing.
Dr. Tao Jiang has obtained the Bachelor of Science in Naval Architecture at the Dalian University of Technology, the Diplom and Doctor Degree at the Institute of Shipbuilding of the University Hamburg, and the Habilitation Degree at the University Duisburg. Currently he is a Member of the Board and Manager Ship Hydrodynamics of the VBD. His main research fields are shallow-water hydrodynamics and nonlinear ship hydrodynamics.
Rupert Henn has obtained the Diplom Degree in the Institute of Ship Technology at the Mercator University of Duisburg. Since 1999 he works as a research associate at the Institute of Ship Technology and Transport Systems at the University Duisburg-Essen. His main research interest is numerical ship hydrodynamics, particularly the application of shallow-water hydrodynamics.