What type of signals are covered in Part D of the COLREGs?

Part D of the COLREGs specifically addresses sound and light signals, which are essential for communication between vessels, especially in situations where visual signals may not be effective. These signals provide important information about a vessel's actions, intentions, and status, which helps to prevent collisions at sea.

Understanding the rules surrounding sound signals, such as whistles or horns, and light signals, like navigation lights and shapes displayed during specific conditions, is crucial for safe navigation. This part of the regulations emphasizes the need for mariners to be aware of how to signal their presence and maneuvers, thus enhancing safety and communication on the water.

The other options pertain to different aspects of maritime regulations. Exemptions deal with circumstances in which vessels may not need to comply with certain rules, but they do not fall under the specific signals covered in Part D. Conduct in Sight of One Another regards the actions vessels should take when they can see each other, which is more about operational behavior than signaling. Verification of Compliance pertains to ensuring that vessels meet specific standards and regulations, rather than the signaling protocols themselves.