What does a danger area (non-lateral marker) warn boaters about?

A danger area marker serves as an important warning to boaters about shallow waters and potential hazards like rocks. These markers are not lateral markers, which indicate channel boundaries or navigable waters, but are specifically designed to alert boaters to areas that could pose a risk to their vessels and safety.

When navigating, awareness of shallow waters is critical, as grounding a boat can lead to damage not only to the vessel but also to the surrounding aquatic environment. Similarly, warning of rocks is vital since these can be submerged and not visible from the water's surface. By identifying these areas with the danger markers, boaters can take necessary precautions, such as adjusting their speed or course, thereby enhancing safety for themselves and others on the water.

Inadequate awareness of these markers could lead to accidents or injuries, making understanding their significance crucial for safe boating practices.