Ship Underkeel Clearance in Waves
نویسنده
چکیده
A method is described for combining squat, heel and wave-induced motion calculations into an overall underkeel clearance (UKC) assessment, based on the “dynamic draft” at all the corners of the ship. Particular attention is given to predicting ship motions in shallow water. The effects of resonant roll, wave spreading and extreme motions are discussed. A general UKC assessment is proposed, valid for calm water or swell conditions. The principles are applicable to long-term UKC assessment for dredging optimization, as well as assessing specific transits through port approach channels, based on real-time or forecast wave conditions.
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