What do non-lateral markers signify?

Non-lateral markers are primarily used to convey regulatory or informational situations to boaters and anglers. These markers are not associated with the lateral system that denotes navigation routes or channel boundaries; instead, they serve vital functions such as indicating specific regulations that must be followed—for example, speed limits, no-wake zones, and restricted areas. They may also provide helpful information regarding safety, warnings, and navigation instructions.

For instance, a marker might indicate that a certain area is off-limits to fishing or that there is a danger present, effectively guiding users on how to safely and correctly navigate the water. This role distinguishes non-lateral markers from other options, which pertain to navigational aids or biological areas.