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Assessment of Transoceanic No-Ballast-On-Board (NOBOB) Vessels andLow-Salinity Ballast Water as Vectors for Nonindigenous SpeciesIntroductions to the Great Lakes

The potential for species transfers from NOBOB vessels entering the  Great Lakes, and therefore not subject to seawater exchange  requirements, had been largely overlooked prior to this research.   Research and field work were completed, samples analyzed, and a final  report released in April 2  5.  The final report provided the most  detailed analysis of the NOBOB vector and new information for  regulatory and/or management actions to reduce risk on NOBOB ships  entering the Great Lakes.  As a result of this project the U.S. Coast  Guard conducted a public hearing and a technical workshop to address  management of NOBOB vessels entering the Great Lakes.   This led to  issuance by the U.S. Coast Guard of voluntary NOBOB management  guidelines, and implementation of new regulations by Canada, requiring  all water in any ballast tanks in ships entering the Great Lakes to  have a salinity of over 3  ppt, either through ballast water exchange  or tank flushing, as appropriate and safe.  Final documentation in the  journal literature remains and will be completed this year.

In progress
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Impact of Pollutants
Exotic Species
Treatment / Manufacturing Processes
Economic Impact Study
Purpose of Project
Program Effectiveness / Regulatory
Control And Mitigation
Integrated Control Strategy
Prevention and Introduction
Determination of Preventive
Spread of Established ANS Populations
Mechanisms of Spread
Socio-economic Consideration and Analysis
Shipping and Navigation
Annex Numbers
Research & Development
Review of Pollution from Shipping Sources
Aquatic Nuisance Species

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