LNG is transported in specially designed vessels with specially insulated storage tanks and cryogenic facilities for handling LNG. The size of such vessels ranges historically from under 100,000 cubic metres up to over 217,000 cubic metres today.

There are two main containment designs for LNG vessels: Moss Spherical (about 60% of the total) and Membrane (40%).

The Moss LNG vessel can be recognised by their hemi-spherical shaped storage tanks. Membrane vessels appear more rectangular, similar to crude and product tankers.