Do boat bathrooms empty into the ocean?
Do boat bathrooms empty into the ocean? It depends on the boat. Historically, the toilet discharged directly overboard into the water. Currently, in US waters, it's illegal to discharge sewage overboard so it goes into a holding tank - new boats are constructed with one, and older boats must be retrofitted.
Where does sewage from a yacht go?
To legally dispose of sewage boaters must either have an on-board treatment device (Type I or Type II MSD) or a holding tank (Type III MSD) to hold the waste and have it pumped out ashore. A No Discharge Zone (NDZ) further prohibits the discharge of treated boat sewage.