Cruise ships often release a range of waste products into the oceans, including sewage, wastewater, and gray water. For example, the average cruise ship may produce up to 200,000 gallons of sewage per day.
Whether cruise ships release waste into the ocean is an important issue because it has the potential to harm marine life and ecosystems. However, there are regulations in place to help minimize the environmental impact of cruise ship waste. One of the most important historical developments in this area was the introduction of the MARPOL convention in 1973, which set limits on the discharge of waste from ships into the sea.





