Boo53 - I'm well aware that Liquified Petroleum Gas and Natural Gas are different substances. The former - as I did note - is a by-product of Petroleum - "Oil". Natural Gas is not - it is drilled for and accessed as a gas.

Check my post above - when I refer to Natural Gas being used in land vehicles to propel said vehicles - I said "CNG" - as in "Compressed Natural Gas". This is the substance in a gaseous form - which is then not at extreme high pressure - and the containment cylinders/vessels do not need cryostabilisation - cooling to maintain the stability of a liquified gas at very high pressure.

However - when very large quanties of Natural Gas are to be bulk-transported - this can be by ship or rail, though shipping is very much more cost-effective - the substance is liquified at very high pressure, this requiring extremely strong and heavy containment vessels (tanks.) For this purpose the exports from Australia use specialised shipping tankers.

When Natural Gas is compressed to a liquid form, it is called "LNG" - Liquified Natural Gas. I thought I had described that difference in the state of the substance, when I wrote above, "...we are shipping it at very low prices to Asia in a fleet of the largest LNG Tankers in the World ...."

Dave.