Spain has been warned the world's "largest" cruise ship is heading for the European Union holiday hotspot - amid protests and demonstrations over touristm and overcrowding. Cruise industry projections suggest that about 35 million passengers will travel on cruise ships this year. “If the industry’s growth does not slow, the biggest ships in 2050 will be eight times larger, in terms of tonnage, than the Titanic — the largest ship on the seas before it sank a century ago,” according to the campaign group Transport & Environment (T&E) .

"It's a step in the wrong direction," said Bryan Comer, director of the Marine Program at the International Council on Clean Transportation (ICCT), an environmental policy think tank. "We would estimate that using LNG as a marine fuel emits over 120% more life-cycle greenhouse gas emissions than marine gas oil," he said. READ MORE UK households who keep onions in their kitchen 'warned' Inesa Ulichina, a sustainable shipping officer for the group, said in a statement, “Today’s cruisezillas make the Titanic look like a small fishing boat.

How much bigger can these giants get? The cruise business is the fastest growing tourism sector and its emissions are quickly getting out of control.” She added: “The only green and scalable solution for decarbonizing maritime activities is e-fuels. Cruising is a luxury business and operators must take responsibility for their climate impact.

If they want to avoid becoming increasingly unwanted vis.