🔍 Key Concepts

• International Rules – Part B, Section III (Rule 34 - Maneuvering and Warning Signals) • Difference between meeting / crossing signals in inland waters vs International whistle signals • When vessels in sight of one another use whistle signals to indicate maneuvering versus danger / doubt

💭 Think About

• Look carefully at the illustration: are the vessels in a narrow channel or special circumstance, or just open waters? How does that affect whether you use maneuvering signals? • Under the International Rules, what does two short blasts mean, and in what specific situations is that signal used? • Which of the options are maneuvering agreement signals used inland, and which are special danger or doubt signals used internationally?

✅ Before You Answer

• Verify in Rule 34 whether two short blasts are required to be answered in open waters when there is no risk of collision or no agreed maneuver taking place • Check which of the listed signals (one prolonged, one short, one prolonged, one short) is associated with a danger / doubt or overtaking in a narrow channel situation • Make sure you are not mixing up Inland whistle signals for passing arrangements with International whistle signals, as the exam specifies INTERNATIONAL ONLY