Sentences with phrase «ballast water discharged»

Berry expresses concern over the implications for marine life of the ballast water discharged from vessels involved in the transportation of rock from the superquarries projected for the Scottish Highlands and Islands, and the problems that such discharges could present to fish farmers in the region.

Not exact matches

And in 2011, the EPA finally mandated treatment systems for overseas ships discharging ballast in U.S. waters.

Ships typically pick up water at a port, carry it for stability, then discharge the ballast water at another port.

In 1991, the IMO adopted guidelines which recommend that ships should avoid taking on ballast in shallow areas and during toxic blooms of marine algae; keep accurate records of where and when ballast is loaded; exchange ballast water at sea, where toxic organisms are rare; and discharge sediments into approved areas at the port of destination («End of the line for deadly stowaways», New Scientist, 24 October 1992).

Julian Parker, secretary of the Nautical Institute in London, says that stress is also introduced if a ship's pumps can not discharge ballast water fast enough to compensate for the increasing weight of cargo.

The Mediterranean, the world's busiest sea, has 900 alien species in its waters, mostly discharged from ballast tanks.

Around a decade later an unknown ship, probably from the Bay of Bengal, discharged ballast water into the coastal waters of Peru, releasing a strain of cholera that contaminated shellfish.

Ships take water on board after offloading cargo and discharge the ballast when they take on a new load — often in a port thousands of kilometres away.

So I am pleased to learn from Stewart that he and his colleagues are giving careful consideration to all environmental aspects of the proposal — including the likely impact on the marine environment of discharges of ballast water, and the extent to which any risk could be controlled.

Via Milwaukee Journal Sentinal: - «Frustrated by the mounting number of invasive species arriving in the bellies of overseas freighters, some conservationists are proposing a simple but radical solution: Ban the ships from the Great Lakes until they can figure out how to stop discharging contaminated ballast water.