Better oil detection sensors reduce cost


of oily bilge water


Over 70 percent of the earth that we live on is made up of oceans, lakes, and rivers. These water ways have become integral parts of our lives. One look at a marine traffic map will put into perspective just how busy our vast oceans are every minute of the day. Not only do we use these waters for trade and travel, but they also provide unique ecosystems and are necessary for the lives of billions of species including our own.


Around the world people have agreed upon the importance of keeping our waters clean and regulations are set internationally and domestically by regulatory bodies to keep pollution levels in check. In international waters, the International Maritime Organization (IMO) limits bilge water discharges to 15ppm. The U.S Coast Guard (USCG) also limits the discharge of oil in bilge water to 15ppm in US territorial waters and further limits special use areas, such as inland waterways and the Great Lakes where vessel operators must adhere to a 5ppm discharge limit or a total restriction on vessel discharges. Violations of these regulations can result in large fines as well as criminal prosecution.


80 | The Report • September 2020 • Issue 93


Oily wastes and waste oils are by-products of operating ocean-going vessels, which generate millions of tons of such wastes annually. Oily bilge water is the mixture of water, oily fluids, lubricants and grease, cleaning fluids and other wastes that accumulate in the lowest part of a vessel called the bilge from a variety of sources including engines, piping, and other mechanical and operational sources found throughout the machinery spaces of a vessel. Most of these wastes are generated in the vessel’s engine room and end up in the bilge


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