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A Study on the Safety of Anchoring for Ulsan M-10 Anchorage  

KIM, Se-Won (Korea Maritime University)
Publication Information
Journal of Fisheries and Marine Sciences Education / v.21, no.2, 2009 , pp. 291-305 More about this Journal
Abstract
As you known well, Ulsan port is very famous for handling chemical products which occupies about 80% of quantities of all Korean ports. Many ship's operators prefer to handle liquid cargo es at proper anchorages instead of the berth for saving port expenses. Ulsan M-10 anchorage was assigned for handling liquid cargoes, however this anchorage's space is restricted by the oil pipeline which lays under seabed about 400m off from the center of M-10 anchorage, for which we have to consider of the external force and counter force for keeping the safety of anchoring. Where, external force is induced by wind, tidal currents and wave while counter force is induced by holding power of anchor/chain. In this study, author evaluated a method to analyze theoretically the limit of external force condition up to which an anchoring ship can keep her position without dragging, and for which applied to many kinds of combined Ships as mother ship of 50,000 DWT Tanker and 4 sizes of Tanker as alongsided ship.
Keywords
Safety of anchoring; M-10 anchorage; Transfer cargoes; External force; Encounter force; Holding power; Shiphandling simulation for anchoring;
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