Numerical simulation of a fishing vessel in parametric roll in head seas
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A time-domain numerical simulation method is applied for the investigation of the parametric roll resonance of a fishing vessel sailing in regular head waves. The employed mathematical model captures rationally most of relevant problem parameters hence enables an improved understanding of the complicated non-linear phenomenon. The dynamic behavior of the vessel has been systematically analyzed and mapped to a characteristics pattern describing in a concise way the incurred stability problem. Two modes of possible capsize are identified, namely due to intensive parametric roll and due to loss of stability. Where possible, the numerical results are compared with corresponding available experimental measurements.
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