Question 2371 Deck General

The correct answer is A) the dip of the line. Catenary refers to the curve or dip that a tow line forms between the towing vessel and the towed vessel. This dip or sag in the line is caused by the weight of the tow line itself, as well as the tension applied to it. The catenary shape helps to distribute the strain on the line and absorb the shock of movement between the two vessels. The other options are incorrect because they do not accurately describe the meaning of catenary as applied to tow lines. The strain on the line is related to but distinct from the catenary, and the length and stretch of the line are separate considerations.