What symbol on a regulatory market is used to mark a no wake or idle speed area?

In a regulatory market, a no wake or idle speed area is typically marked by a specific buoy symbol, often featuring a white circle with a diagonal red stripe or a red "idle speed" sign. These markers indicate that vessels must operate at minimal speed to prevent creating wakes that could disturb the surrounding environment or other boaters. Always adhere to local regulations and signage for safe boating practices.