Which of the following is true regarding course changes for visibility to other vessels?

When considering course changes for visibility to other vessels, it's vital to ensure that those changes are significant enough to be noticeable to others on the water. Making large, clear alterations in direction helps to communicate intended movements to nearby vessels, reducing the risk of misinterpretation and potential collisions.

This principle is grounded in the need for safely navigating crowded waterways where clear and decisive actions promote interaction and visibility among vessels. Subtle adjustments might not be easily perceived, especially when other vessels are at some distance or in conditions of reduced visibility. Thus, ensuring that course changes are significant enhances safety and encourages proper response from other mariners who may be observing your vessel.