🔍 Key Concepts

• Meaning and required display of the International Code Flag "A" • Vessels "restricted in their ability to maneuver" under the Navigation Rules • Special signals for diving operations in BOTH International & Inland rules

💭 Think About

• Think about what activity creates a particular danger to approaching vessels close aboard and especially affects divers or people in the water. • Which of these operations is specifically associated in practice with the blue-and-white International Code Flag "A"? • Consider which operations have their own distinct day shapes or lights instead of Flag "A".

✅ Before You Answer

• Verify which activity is explicitly linked to the International Code Flag "A" in the Navigation Rules (Rules on shapes and lights). • Check which of the listed operations are instead covered by day shapes for vessels restricted in their ability to maneuver. • Eliminate any choices that are mainly about cargo type (like explosives) rather than people in the water or close to the hull.