Question 4020 Deck General

The correct answer is D) It forces the bow away from the bank. The "bank cushion" effect occurs when a single-screw vessel travels along a narrow channel. The rotating propeller causes water to be pushed away from the hull, creating an area of high pressure that forces the bow of the vessel away from the bank. This is due to the asymmetry of the water flow around the hull, which causes the bow to be pushed away from the bank while the stern is pulled toward it. The other options are incorrect because they do not accurately describe the "bank cushion" effect. Option A is incorrect as the entire vessel is not forced away from the bank. Option B is incorrect as the stern is pulled toward the bank, not forced away. Option C is incorrect as the vessel is not heeled toward the bank, but rather the bow is pushed away.