As Harmony of the Seas sets sail from Southampton docks on Sunday she will leave behind a trail of pollution – a toxic problem that is growing as the cruise industry and its ships get ever bigger
When the gargantuan Harmony of the Seas slips out of Southampton docks on Sunday afternoon on its first commercial voyage, the 16-deck-high floating city will switch off its auxiliary engines, fire up its three giant diesels and head to the open sea.
But while the 6,780 passengers and 2,100 crew on the largest cruise ship in the world wave goodbye to England, many people left behind in Southampton say they will be glad to see it go. They complain that air pollution from such nautical behemoths is getting worse every year as cruising becomes the fastest growing sector of the mass tourism industry and as ships get bigger and bigger.
The Harmony, owned by Royal Caribbean, has two four-storey high 16-cylinder Wärtsilä engines which would, at full power, each burn 1,377 US gallons of fuel an hour, or about 66,000 gallons a day of some of the most polluting diesel fuel in the world.
“We can smell, see and taste it. These ships are like blocks of flats. Sometimes there are five or more in the docks at the same time. The wind blows their pollution directly into the city and as far we can tell, there is no monitoring of their pollution. We are pushing for them to use shore power but they have resisted.”
“The liners pollute, but the road traffic that they and the cargo ships generate is also huge,” he adds.
Royal Caribbean, the US owners of the Harmony of the Seas, said that the latest and most efficient pollution control systems were used and that the ship met all legal requirements.
Industry body Cruise Lines International Association (CLIA) added that companies had “invested significantly over the last decade to develop new technologies to help reduce air emissions”.
But marine pollution analysts in Germany and Brussels said that such a large ship would probably burn at least 150 tonnes of fuel a day, and emit more sulphur than several million cars, more NO2 gas than all the traffic passing through a medium-sized town and more particulate emissions than thousands of London buses.
According to leading independent German pollution analyst Axel Friedrich, a single large cruise ship will emit over five tonnes of NOX emissions, and 450kg of ultra fine particles a day.
Bill Hemmings, marine expert at Brussels-based Transport and Environment group said: “These ships burn as much fuel as whole towns. They use a lot more power than container ships and even when they burn low sulphur fuel, it’s 100 times worse than road diesel.”
“Air pollution from international shipping accounts for around 50,000 premature deaths per year in Europe alone, at an annual cost to society of more than €58bn [ $65bn],” says the group on its website.
