15th Triennial International Conference
Ferry Vessel Propeller Wash Effects on Scour at the Kingston Ferry Terminal, WA, USA
Publication: Ports 2019: Port Planning and Development
ABSTRACT
Vessel propeller wash has been shown to cause scour in the marine environment. We investigated the hydrodynamic causes of severe erosion at the Washington State Ferries ferry terminal in Kingston, WA, where a cliff-like bathymetric feature has shifted shoreward in recent years, forcing repairs on the slip’s bridge pilings. High resolution measurements of velocity and estimates of turbulent bed stress were made during vessel arrivals and departures during two deployment periods in March and April 2018. Calculated bed stresses were found to be 100 times larger during vessel arrivals and departures than background levels. Bed stresses were higher during vessel departures than arrivals, corresponding to higher vessel acceleration during departures. Additionally, during departures, lower tidal stages correspond to higher bed stresses, because the propellers are closer to the seabed. During arrivals, larger vessels generated higher bed stresses.
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Information & Authors
Information
Published In
Ports 2019: Port Planning and Development
Pages: 500 - 511
Editors: Pooja Jain, Moffatt & Nichol and William S. Stahlman III, America's Central Port
ISBN (Online): 978-0-7844-8262-9
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Sep 12, 2019
Published in print: Sep 12, 2019
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