🔍 Key Concepts

• Order of urgency for navigational safety information (immediate, weekly, long-term) • Difference between radio/broadcast warnings and printed publications • How often charts and Light Lists are updated compared to real-time hazards

💭 Think About

• Which method would reach mariners already underway the fastest if a critical buoy failed or a light was extinguished? • Which options are periodic publications versus real-time or near real-time warnings? • If the hazard is serious and unexpected, would you wait for a weekly or printed update, or use something transmitted over the air?

✅ Before You Answer

• Identify which choice is a radio/voice broadcast rather than a printed document. • Consider which method is used for urgent, safety‑of‑navigation information to vessels currently at sea. • Eliminate any options that are only periodic corrections and not immediate warnings.