water ballast tank


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water ballast tank

[′wȯd·ər ¦bal·əst ‚taŋk]
(naval architecture)
A tank in which sea water for ballast is confined.
References in periodicals archive ?
The new Performance Standard for Protective Coatings (PSPC) from the International Maritime Organization now requires that all coatings designated for use in sea water ballast tanks meet certain minimum standards.
PPG Protective and Marine Coatings has launched antifoulings that allow for extended laid-up periods, meet the latest IMO PSPC regulations for water ballast tanks and reduce the cost of onboard maintenance.
This new partnership, which joins the world's first classification society with the world's leading producer of marine and protective coatings, has been offering interested Chinese shipyards a free consultancy, or "gap analysis" survey, comparing their current processes for coating a ship's water ballast tanks to those that will be required under the new PSPC regulations adopted late last year by the International Maritime Organization (IMO).
It is outfitted with a hydraulic lifting bulb keel and water ballast tanks providing excellent stability and improved upwind performance, while allowing shallow draft for gunk-holing or sailing in shoal areas.