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Bow and stern sinkage coefficients for cargo ships in shallow open water
Hun Ha, J.; Gourlay, T.P. (2018). Bow and stern sinkage coefficients for cargo ships in shallow open water, in: PIANC Yearbook 2017. pp. 19-32
In: (2018). PIANC Yearbook 2017. PIANC: Brussels. , more
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Keywords
    Approach channels
    Hulls > Ship hulls
    Properties > Soil properties > Sinkage
    Under keel clearance
    Water > Shallow water
Authors  Top 
  • Hun Ha, J.
  • Gourlay, T.P.
Abstract
    In this paper, we develop sinkage coefficients for ships in shallow open water, or harbour approach channels with minimal transverse restriction. These sinkage coefficients may be used for under-keel clearance management by ports, pilots, and deck officers. The coefficients are calculated using slender-body shallow-water theory applied to 12 published hull forms. Results are condensed into sinkage coefficient ranges for container ships, oil tankers, bulk carriers, and membrane LNG carriers. Limitations on use of the coefficients are suggested, based on ship and navigation channel dimensions. Examples are given for container ships, bulk carriers, and LNG carriers in Australian ports.
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