Safety & Environmental Protection (Deck) USCG Question #2018 (Set 61)

What does NOT affect the value of the free surface correction?

Official USCG Answer & Rule Citation

Correct Answer: Option D — Registered tonnage

Free surface correction depends strictly on tank geometry (length and width), liquid specific gravity, and vessel displacement. Registered tonnage is a volumetric capacity measurement unrelated to intact stability or fluid shifting moments.

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