🔍 Key Concepts

• How the U.S. Coast Pilot cites charts from different national hydrographic offices • Standard ways that foreign charts are distinguished from NOAA / U.S. charts in publications • Special symbols, letters, or abbreviations that indicate Canadian Hydrographic Service charts

💭 Think About

• Look at the four options and separate those that would appear before the chart number from those that appear after it. Which is more typical for indicating nationality? • Think about how you’ve seen Canadian charts referenced in other materials—do they usually use a letter code, a symbol, or a word abbreviation? • Consider which marking would be the clearest and least confusing when mixed with many U.S. chart numbers on the same page.

✅ Before You Answer

• Verify whether the indicator is a symbol (like an asterisk), a letter, or a word abbreviation and which of those is more consistent with hydrographic chart practices. • Check if the indicator is placed before or after the chart number in official references—placement can be a key clue. • Ask yourself which choice would be easiest for mariners to immediately recognize as Canadian when scanning a mixed list of charts.