Why is liquefied natural gas carried aboard ships in giant spherical containers?

Answer 1

A sphere has the lowest surface to volume ratio of any solid body. Since liquefied natural gas must be kept at a temperature far below ambient temperature, and since heat can enter the storage container only through its surface, using a spherical container minimizes the energy that must be expended to maintain the stored liquefied natural gas at a low temperature.

Answer 2

Liquefied natural gas (LNG) is carried in giant spherical containers because they can withstand the extreme low temperatures required to keep the gas in its liquid state. The spherical shape helps evenly distribute pressure, reducing stress on the container. Additionally, spherical containers have lower surface area-to-volume ratios, which minimizes heat transfer and helps maintain the LNG in its liquid form during transportation.