Blue Coast staff are experts in assessing the impacts of ship hydrodynamics on shorelines. Our expertise includes monitoring, assessment, modeling, and mitigation related to the effects of ship traffic in waterways. Our experience leading several large engineering and scientific studies of wakes and their effects on coasts and waterways has put us at the forefront of developing design criteria for shore structures and shoreline erosion in wake sensitive areas, ferry system design and optimization, and evaluation of the effects of vessel wakes and propeller wash relative to other coastal processes on shoreline erosion. Our experience includes the measurement of vessel wakes and vessel motion in a variety of settings. We have developed a large database of field measurements of vessel wakes which we use to provide insight and understanding of local processes and in the validation of models for optimization of ship operations.
From 2006 to 2016, Blue Coast staff have been assisting Kitsap Transit on the planning, environmental studies, vessel selection, vessel operational criteria, and public outreach to establish fast ferry service along the Bremerton to Seattle ferry route. The stakeholder outreach and communications program were integral to the public accept
From 2006 to 2016, Blue Coast staff have been assisting Kitsap Transit on the planning, environmental studies, vessel selection, vessel operational criteria, and public outreach to establish fast ferry service along the Bremerton to Seattle ferry route. The stakeholder outreach and communications program were integral to the public acceptance of the Kitsap Transit fast ferry plan. Since 2017, Blue Coast staff have been working on the implementation of the fast ferry service along the Bremerton route as well as environmental consultation on two additional fast ferry service operations from Kingston and Southworth.
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Blue Coast staff designed and implemented a field data collection program to measure the vessel wake wash from the passenger-only ferry, MV Sally Fox, which operates on the Seattle-to-Vashon ferry route. The testing program involved deployment of two gages to measure waves generated by the MV Sally Fox, installation of a heave pitch and
Blue Coast staff designed and implemented a field data collection program to measure the vessel wake wash from the passenger-only ferry, MV Sally Fox, which operates on the Seattle-to-Vashon ferry route. The testing program involved deployment of two gages to measure waves generated by the MV Sally Fox, installation of a heave pitch and roll sensor, and logging of vessel track and speed. The data collected were analyzed to determine the speed at which the maximum wake wash was produced (hump speed) and the optimal speed of operation of the vessel to minimize wake wash. The results of the testing were also compared to the Rich Passage wake wash criteria, wake wash data from MV Rich Passage 1 and MV Spirit of Kingston to assist in future operations planning.
Blue Coast Engineering worked with KPFF to provide a preliminary analysis of potential environmental impacts from Passenger Only Ferry (POF) service along an expansion routes from Ballard to downtown Seattle through Puget Sound and a new service between Kenmore and University of Washington on Lake Washington. King County proposes to oper
Blue Coast Engineering worked with KPFF to provide a preliminary analysis of potential environmental impacts from Passenger Only Ferry (POF) service along an expansion routes from Ballard to downtown Seattle through Puget Sound and a new service between Kenmore and University of Washington on Lake Washington. King County proposes to operate one to two 150-passenger vessels at an operating speed of up to 28 knots in unrestricted areas. The route options were evaluated using publicly available data and data digitized for this project using ArcGIS to visually represent the potential environmental impacts resulting from implementation of these POF services and to provide a guide for future environmental work required for the implementation of POF service on these routes. The evaluation also considered the potential environmental impacts at two alternative ferry landing sites being considered for the City of Kenmore and three alternative landing sites being considered in Seattle.
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