Which type of marks typically have even numbers?

The type of marks that typically have even numbers are indeed red markers and buoys. In the United States, the system of aids to navigation follows a standard in which red buoy markers are designated to carry odd numbers and are typically found on the right side of a vessel’s return to port. In contrast, lights and buoys that are green are assigned even numbers and are positioned on the left side of the vessel when returning.

This numbering system is crucial for navigation, as it helps boaters identify their position in relation to the channel and ensure safe passage. For example, a boater navigating through a channel would expect to see green markers with even numbers on their port side as they approach a harbor or safe area from the open water. Understanding this system aids in following the right course and avoiding navigational hazards.

The incorrect options, such as safe water marks and danger marks, do not follow this numbering convention, as they serve different functions and do not correspond to the even/odd numbering system used by navigational markers.