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What is Ballast water ... Ships take in a certain amount of water for stability and trim before a voyage. Once the ship arrives at its destination it may release this ballast water into the new bay. Ballast stablizes ships in the water and is a necessary feature of commercial shipping.
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www.providence.edu/polisci/students/megaport/ballast.ht...
www.providence.edu/polisci/students/megaport/ballast.htm
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The GEF/UNDP/IMO Global Ballast Water Management Programme (GloBallast) is assisting developing countries to; reduce the transfer of harmful aquatic organisms and pathogens in ships' ballast water, implement the IMO ballast water Guidelines and prepare for the new IMO ballast water Convention.
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globallast.imo.org/
globallast.imo.org/
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Sailing ballast - Wikipedia, the free encyclopedia
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Ballast is used in sailboats to provide moment to resist the lateral forces on the sail. Insufficiently ballasted boats will tend to tip, or heel, excessively in high winds. Too much heel may result ...
en.wikipedia.org/wiki/Sailing_ballast
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The Marine Invasions Research Lab at the Smithsonian Environmental Research Center (SERC) studies the invasion of Chesapeake Bay and other areas by nonindigenous species. ... The National Ballast Information Clearinghouse will not have on-line form submission capabilities during the weekend of Nov 21-22, 2009. E-mail and...
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Explore our collections, exhibitions, natural history and indigenous cultures ... They are smaller (less than 3.5 cm long) than most native tadpoles and often gather in huge numbers in shallow water. Cane Toad spawn is unique in Australia. It is laid in long strings of transparent jelly enclosing double rows of black eggs.
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www.amonline.net.au/factsheets/canetoad.htm
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Nuttallia obscurata is believed to have arrived in the Strait of Georgia region (near Vancouver, British Columbia) in ballast water ** (a by-product of shipping) in the late 1980s. The earliest references to its presence on the west coast were published in the Vancouver Shell News and the Pacific Northwest Shell...
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faculty.washington.edu/cemills/Nuttallia.html
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As a cargo ship empties or takes on load, its ballast tanks fill or release water in order to balance the boat properly. Ballast is generally needed to increase the draft of a vessel (how deeply it sits ... But because there have been no known outbreaks associated with ballast water, very little water testing is ever done.
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www.popsci.com/environment/article/2008-06/diseased-bal...
www.popsci.com/environment/article/2008-06/diseased-ballast-water
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