Deck General USCG Question #4820 (Set 152)

Your ship has loaded 22,000 barrels of crude oil, departing Valdez, Alaska for Panama. When loaded the cargo temperature was 90°F. API was 15°. The volume correction factor (VCF) is .0004. If the cargo temperature is expected to be 100°F at the discharge port, how many barrels will be offloaded?

Official USCG Answer & Rule Citation

Correct Answer: Option C — 22,088

Calculate volume change using $\Delta V = V \times VCF \times \Delta T$. Temperature increases by $10^\circ\text{F}$, expanding the cargo: $22,000 + (22,000 \times 0.0004 \times 10) = 22,088$ barrels. Petroleum expands when heated, increasing observed volume at the discharge port per standard ASTM/API cargo calculation procedures.

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