Question 4163 Deck General

70% to pass

As a ship moves through the water, it drags with it a body of water called the wake. The ratio of the wake speed to the ship's speed is called _______________.

A speed of advance
B propeller velocity
C wake distribution
D wake fraction
AI Explanation

The correct answer is D) wake fraction. The wake fraction is the ratio of the speed of the wake to the speed of the ship. As a ship moves through the water, it drags along a body of water behind it, creating a wake. The speed of this wake is always less than the speed of the ship, and the ratio between the two is known as the wake fraction. The other options are incorrect because: A) Speed of advance refers to the forward speed of the ship, not the speed of the wake. B) Propeller velocity is the rotational speed of the propeller, not the speed of the wake. C) Wake distribution refers to the pattern or shape of the wake, not its speed relative to the ship.

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