🔍 Key Concepts

• Understand the primary purpose of each listed publication • Focus on which reference would cover procedures and guidance during emergency or war conditions for merchant shipping • Distinguish between communication codes, navigational aids, and routeing/operational guidance

💭 Think About

• Which of these publications is mainly about visual and radio communication methods between ships and shore, rather than operational guidance in wartime? • Which publication is focused on fixed aids to navigation (like buoys and lights), and which is more about broader voyage planning and routing information? • In a situation involving Naval Cooperation and Guidance for Shipping, would you look first to a communications codebook, a list of lights, a radio-gear catalog, or a planning/routing guide?

✅ Before You Answer

• Review what Pub. 117 is typically used for on board (what kind of information does it list?). • Confirm what type of information the Light List provides and whether it deals with naval cooperation or just navigation aids. • Identify which option is most closely associated with routeing, coastal information, and operational guidance rather than simple signal or equipment listings.