Question 4110 Deck General

70% to pass

How does the effect known as "bank suction" act on a single-screw vessel proceeding along a narrow channel?

A It pulls the bow toward the bank.
B It pulls the stern toward the bank.
C It pushes the entire vessel away from the bank.
D It heels the vessel toward the bank.
AI Explanation

The correct answer is B) It pulls the stern toward the bank. When a single-screw vessel is proceeding along a narrow channel, the effect known as "bank suction" causes the stern of the vessel to be pulled toward the bank. This is because the rotating propeller of the single-screw vessel creates a low-pressure area near the stern, which in turn creates a suction force that pulls the stern toward the nearby bank. The other options are incorrect because: A) the bow is not pulled toward the bank, C) the entire vessel is not pushed away from the bank, and D) the vessel does not heel toward the bank due to this effect.

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