Roughly 86,000 ships sail around the world; 400 of these are two-to-four thousand passenger mega-cruisers, five of them carry over 6,600, and over 100 containers can reach as many as 24,000 TEU (Twenty-foot Equivalent unit, unity of measurement for 20-foot containers).These ships exceed 350 metres in length and 200,000 GT gross tonnage; their fuel consumption, needless to say, is appalling: a cruise ship, her engines on 24/7, consumes 150 tonnes heavy oil every day. T&E – Transport and Environment, the Brussels-based research centre supported by over 60 Environment Associations in Europe-claim that Carnival’s 47-ship fleet, the biggest in the world including Costa Crociere, releases ten times as much SOx as the 260 million vehicles circulating in Europe every year. Container ships do not consume less than that, but even a…