In 1985, the United States Coast Guard and The University of Michigan initiated a planing hull research project. The research was performed as part of the UWUSCG Officer Trainingship Program. Early work at U of M included the design and fabrication of a dynamometer which could oscillate a model venically and measure the resulting forces. Tests were performed for verification of dynamometer performance and to determine added mass and damping coefficients for a prismatic planing form. A description of the dynamometer construction and calibration, and preliminary results are included.

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