You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?

Correct Answer: Option C — you are in the vicinity of the ICW

The Intracoastal Waterway (ICW) is marked by yellow symbols on standard lateral aids. A yellow triangle indicates that the aid should be kept to the starboard side when traveling in the direction of increasing mileage, helping mariners distinguish ICW markers from those serving other local channels or ports.