Deck General USCG Question #1431 (Set 45)

LNG is carried at approximately what temperature?

Official USCG Answer & Rule Citation

Correct Answer: Option D — -160 degrees C

Liquefied Natural Gas (LNG) is primarily methane, which requires cryogenic temperatures to remain in a liquid state at atmospheric pressure. The standard boiling point of methane is approximately -161.5°C. Consequently, LNG carriers are engineered to maintain cargo temperatures at roughly -160°C to prevent rapid phase transition to gas.

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