Q -Max, also Qatar -Max, is a size specification for ships. It refers to ships that can just call at the port of Ras Laffan in Qatar. You are 345 m long, 53.8 m wide and can carry 266,000 cubic meters of liquefied natural gas. The Q stands for the English name of the country, Qatar '.

So far, 14 ships of this size - the Nakilat Q-Max class - was delivered from the shipyards Samsung Heavy Industries, DSME and Hyundai to the shipping company Qatar Gas Transport Company.