Dynamic Waterline Seakeeping Predictions for a Fishing Vessel.
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT
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This report continues the work reported in report CG-D-5-76 titled Validity of a Strip Theory - Linear Superposition Approach to Predicting Probabilities of Deck Wetness for a Fishing Vessel, dated November 1975. This report examines the use of a dynamic waterline for strip theory motion computations for a full-hull fishing vessel. This vessel exhibited considerable trim, sinkage, and bow wave at high speed. Because of this, it was thought that the use of an experimentally determined high speed waterline could improve prediction accuracy. It is shown, however, that no improvement was obtained. It was concluded that computational errors introduced by the dynamic waterline were negligible compared to errors introduced by the full-hulled vessels violation of strip theory assumptions.
- Marine Engineering