A vessel traveling down a narrow channel, especially if the draft is nearly equal to the depth of the water, may set off the nearer side. This effect is known as __________.

Correct Answer: Option C — bank cushion

Bank cushion occurs when the bow wave is compressed between the vessel's hull and the bank. This high-pressure area pushes the bow away from the bank. Conversely, bank suction occurs at the stern, where low pressure draws the vessel toward the bank, potentially leading to a grounding.