🔍 Key Concepts

• IALA buoyage system and what a white light with Morse code usually marks • Difference between a safe water mark and an isolated danger mark • How a mid-channel/fairway buoy is used in a buoyed channel

💭 Think About

• Decide first: does a white light Morse signal normally warn of danger, or indicate safe water? • Think about whether this buoy is something you must keep well clear of, or something intended to help you stay in the fairway. • Ask yourself: which options would make sense if the buoy marked danger, and which would make sense if it marked the center of the channel?

✅ Before You Answer

• Verify what light characteristic "Morse" (typically Morse "A") means in the IALA buoyage system. • Confirm whether a safe water mark is kept close aboard or avoided at a wide distance. • Check the chart symbol and note whether the danger itself or the safe water is what is actually located at the buoy’s position.