Abstract
Experimental techniques for measuring pitch and heave motions for hull forms with large bulbous bows are investigated. It is found that free-running tests in regular small-amplitude waves give the most accurate results. A comparison of the pitch and heave amplitudes and phases obtained by the experiment and by the Korvin-Kroukovsky strip theory shows satisfactory agreement. It is concluded that with sufficiently accurate section representation, the strip theory can be used to predict head-seas motions not only for regular hull forms, but also for ships with bulbous bows and sonar arrays in small-amplitude waves.
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