Apr 08
Ballast water

This week Sarah Bailey, chair of ​ICES/IOC/IMO Working Group on Ballast and Other Ship Vectors (WGBOSV) explains to us what is meant by ballast water.

Sarah Bailey.jpg'Ballast water is defined as water carried by a ship to increase the draft, change the trim, regulate the stability, or maintain stress loads. Typically, ballast water (and the aquatic plants and animals living in it) is loaded while a ship is in port to unload cargo – the ship then sails to a new port where it discharges the ballast water as it takes on new cargo. Since ships can carry thousands of cubic metres of ballast water, and travel rapidly between distant ports, ballast water has been an important mechanism for the introduction of non-native species to new locations around the world.'



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