Adverse effects due to free surface will result when __________.
Official USCG Answer & Rule Citation
Correct Answer: Option C — a portion of liquid is removed from a full tank
Free surface effect is created when a tank is partially filled, allowing the liquid to shift as the vessel heels. Removing a portion of liquid from a previously full tank creates this free surface, which causes a virtual rise in the center of gravity and reduces the vessel's stability.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.