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Oblique view, http://name.umdl.umich.edu/IC-UMMU-X-06-06739%5D06_06739, https://quod.lib.umich.edu/cgi/i/image/api/thumb/ummu/06-06739/06_06739/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Library Information Technology.; Davis Art Slides, https://www.lib.umich.edu/about-us/policies/copyright-policy

General view, http://name.umdl.umich.edu/IC-UMMU-X-06-06740%5D06_06740, https://quod.lib.umich.edu/cgi/i/image/api/thumb/ummu/06-06740/06_06740/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Library Information Technology.; Davis Art Slides, https://www.lib.umich.edu/about-us/policies/copyright-policy

An analytical and experimental study of ship motions and capsizing in extreme seas has been conducted. The analysis of linear and quasi-linear one- dimensional roll models has revealed motion anomalies not apparent from the usual linearized ship motion theory. Extensive tests have been conducted using two radio-controlled models in the wind generated seas of San Francisco Bay. Directional spectra were computed, using a variety of techniques, from the wave measurements by an array of wave gages. Comparisons of the experimentally determined motions and a linear strip theory prediction are presented. A time domain numerical simulation program for motions and capsizing has been used to investigate motions in a variety of wave group configurations. The results show good agreement with observed capsizing phenomena and have revealed a number of important characteristics associated with large geometry changes in waves.