Question 88 Deck General

70% to pass

When properly set and drawing, a fore-and-aft sail shall have which cross-section?

A One that approximates a straight line
B One that has more curve at the luff
C One that has more curve at the leach
D One that is a uniform curve
AI Explanation

The correct answer is B) One that has more curve at the luff. When a fore-and-aft sail is properly set and drawing, the cross-section of the sail should have more curve at the luff (the forward edge of the sail) compared to the leach (the rear edge of the sail). This curvature helps to create a smooth, efficient airflow over the sail, generating the maximum lift and propulsive force. The other options are incorrect because: A) a straight line cross-section would not be efficient for a fore-and-aft sail; C) more curve at the leach would disrupt the airflow and reduce performance; and D) a uniform curve would not be the optimal shape for a properly set and drawing fore-and-aft sail.

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