This is a question that has been asked by many people who are concerned about the environmental impact of cruise ships. The simple answer is yes, but there’s more to it than that.
Why do Cruise Ships Dump Waste in the Ocean
Cruise ships are not connected to a sewage system like most buildings on land. Instead, they have their own wastewater treatment systems on board.
However, not all waste can be treated and some of it needs to be discharged into the sea. This includes treated sewage, but also other types of waste such as food waste and greywater (wastewater from sinks, showers and laundry).
Is it Legal
While this might sound like a very polluting practice, it is actually legal under certain conditions. The International Maritime Organization (IMO) has set rules for the discharge of different types of waste from ships, including cruise ships. These rules are known as MARPOL Annex IV and they aim to minimize the impact of shipping on the marine environment.
What are the Rules
Under these rules, cruise ships are only allowed to discharge treated sewage if it meets certain standards. For example, it cannot contain any harmful substances such as heavy metals or pathogens that could harm marine life or humans if they come into contact with it. In addition, treated sewage must be discharged at least 12 nautical miles from shore so that it has time to disperse and dilute before reaching coastal waters.
Food Waste and Greywater
As for other types of waste such as food waste and greywater, these can be discharged closer to shore if they meet certain criteria. For example, food waste must be ground up before being discharged so that it breaks down more easily in the water. Greywater must also meet certain standards for things like pH levels and oil content.
What are the Risks
Even though cruise ships are only allowed to discharge treated sewage and other waste, there are still risks associated with this practice. For example, if a ship’s treatment system malfunctions, untreated waste could be discharged into the sea. In addition, even treated sewage can contain nutrients that can contribute to harmful algal blooms or other problems in coastal waters.
What Can be Done
To minimize these risks, some cities and countries have implemented stricter rules for cruise ships operating in their waters. For example, Alaska has banned the discharge of all wastewater from large cruise ships within 3 nautical miles of shore. Some ports also require cruise ships to use shore power instead of idling their engines while docked, which can reduce emissions and pollution.
- Conclusion:
In conclusion, it is true that cruise ships do drop poop in the ocean but it’s not as straightforward as it might seem. While this practice is legal under certain conditions, there are still risks associated with it.
To minimize these risks, it’s important for cruise lines and governments to work together to implement stricter rules and regulations for the discharge of waste from ships. As consumers, we can also make a difference by choosing to travel with companies that prioritize environmental sustainability and responsible waste management practices.