🔍 Key Concepts

• Bridge clearance information sources commonly used in navigation planning • Purpose and content of the Light List published by the U.S. Coast Guard • Difference between narrative publications (journals/reports) and official government navigation references

💭 Think About

• Which publication is specifically designed to give fixed data like heights, positions, and characteristics of structures that affect navigation? • Which options are more like general reading material or regulations, and which is a structured reference mariners actually consult while voyage planning? • If you already had a Corps of Engineers map, what other standard government publication would you logically use alongside it to double-check vertical clearances?

✅ Before You Answer

• Identify which choice is an official U.S. government navigation publication used by mariners. • Consider which reference is organized in tables with heights, positions, and characteristics of aids or structures. • Eliminate any option that sounds like a magazine, trade journal, or general regulation, rather than a practical navigation tool.