While the rising popularity of cruise holidays is a huge benefit to the industry, the associated environmental impact presents a significant shortcoming. With this in mind, ports are going to great lengths to help cruise ships in their sustainability endeavours
The Environmental Protection Agency (EPA) says that an average cruise ship with 3,000 passengers and crew produces about 21,000 gallons of sewage a day – that’s more than a billion gallons a year for the industry. Meanwhile, according to the EPA, each day an average cruise ship is at sea it emits more sulphur dioxide than 13 million cars.
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Source: Cruise & Ferry.net