What do you mean by LNG?

Liquid Natural Gas

So dangerously explosive (Hiroshima grade) that usually they do not allow a LNG tanker into a port in a large city. They prefer to offload it in a place where if the worst does happen, instead of wiping out 50 square blocks of downtown business district, they heat up a square mile of desert and maybe broil a few kangaroos.

The LNG is stored aboard the ship at tremendous pressure. Should a pressure vessel leak and catch fire, there is no easy way of extinguishing it. Should it then rupture... well, anyplace else would be a better place to be.

This is not to say that LNG ships are ticking time bombs waiting to destroy civilization as we know it. (Thinfourth would never risk his empeg if that were the case!) In fact, I do not know if any LNG ship has ever exploded, the safety precautions are pretty strict.

tanstaafl.