Question 3903Deck General70% to pass
You are the officer on watch and have taken the final drafts of your vessel prior to getting underway. The vessel takes departure and proceeds outbound in a narrow channel. As the vessel increases speed and gains momentum, what will be the effect on the mean draft?
AI Explanation
The correct answer is C) it will increase in comparison to the sailing drafts.
As a vessel increases speed and gains momentum, the dynamic forces acting on the vessel will cause the mean draft to increase compared to the sailing draft. This is due to the pressure differential created by the water flow around the hull, which results in a reduction in the buoyant force and an increase in the vessel's draft. This phenomenon is known as "squat" and is a common effect observed in vessels operating in narrow channels or restricted waterways.
The other answer choices are incorrect because: A) the draft would increase, not decrease, B) decreasing speed would not cause the draft to increase, and D) the draft would change, not remain the same, as the vessel gains speed.
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