Deck General USCG Question #4830 (Set 152)

The boiling point of Methane is -161°C. How is the substance carried?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Atmospheric pressure.

Methane has a boiling point of $-161^\circ\text{C}$, requiring carriage in liquefied natural gas (LNG) carriers as a fully refrigerated liquid at atmospheric pressure within specially insulated containment systems in compliance with 46 CFR Part 154 regulations.

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