Ballast 19 : Weight added to a vessel to lower its center of gravity and increase the draft. Ballast can be taken on in the form of water, rocks, or sand
US Department of Commerce, National Oceanic and Atmospheric Administration, Glossary - NOAA's State of the Coast (SOTC), Washington, DC, USA 2013. http://stateofthecoast.noaa.gov/glossary.html, (CoaStormEmr - Amer) {881}
