Ballast Water Treatment, U.S. Great Lakes Bulk Carrier Engineering and Cost Study. Volume 2: Analysis of On-Board Treatment Methods, Alternative Ballast Water Management Practices, and Implementation Costs

Abstract : The intent of this study is to investigate the design and ballast water management (BWM) practices of US flag vessels operating solely within the Great Lakes; assess the potential for these vessels to treat their ballast water to kill or remove living organisms; and develop a generalized evaluation of the engineering and cost issues associated with installing a BWM System.. Ballast Water Treatment, U.S. Great Lakes Bulk Carrier Engineering and Cost Study Volume I: Present Conditions identifies present ballast water practices as related to trading patterns, including an analysis of ballast discharge information with respect to vessel size and type. The study selects five vessels that best represent the full range of U. S. flag Laker trade (including voyage patterns and vessel types). In Ballast Water Treatment, U.S. Great Lakes Bulk Carrier Engineering and Cost Study Volume II: Analysis of On-Board Treatment Methods, Alternative Ballast Water Management Practices, and Implementation Costs, we examine the costs to outfit and operate four of the five vessels with installed ballast water treatment systems, and also, for comparison, investigate potential costs associated with treating ballast water ashore.