where does human waste go on a cruise ship
Cruise ship pollution in the United States Commercial vessels are required to obtain NPDES permits pursuant to Section 402 of the Clean Water Act. Section 312 of the Act prohibits the dumping of untreated or inadequately treated sewage from vessels into the navigable waters of the United States (defined in the act as within 3 miles (4.8 km) of shore). Cruise ships are subject to this prohibition. Commercial and recreational vessels with installed toilets are required to have marine sanitation devices, which are designed to prevent the discharge of untreated sewage. Beyond 3 miles (4.8 km), raw sewage can be discharged. On some cruise ships, especially many of those that travel in Alaskan waters, sewage is treated using Advanced Wastewater Treatment (AWT) systems that generally provide improved screening, treatment, disinfection, and sludge processing as compared with traditional MSDs. AWTs are believed to be very effective in removing pathogens, oxygen-demanding substances, suspended solids, oil and grease, and particulate metals from sewage, but only moderately effective in removing dissolved metals and nutrients (ammonia, nitrogen and phosphorus).
MS Oasis of the Seas MS Oasis of the Seas is an Oasis-class cruise ship owned by Royal Caribbean International. Her hull was laid down in November 2007 and she was completed and delivered to Royal Caribbean in October 2009. At the time of construction, Oasis of the Seas set a new capacity record of carrying over 6,000 passengers.[11] The first of her class, she was joined by sister ships MS Allure of the Seas in December 2010 and MS Harmony of the Seas in May 2016. Oasis of the Seas conducts cruises of the Caribbean from her home port of Port Canaveral in Cape Canaveral, Florida.[12]