🔍 Key Concepts

• Rule 13 – Overtaking (International): when a vessel is considered to be overtaking and responsibilities between the give-way vessel and stand-on vessel • Rule 34 – Maneuvering and Warning Signals (International): what short blast signals are used for and when they must be sounded • Difference between signals that indicate a course alteration and signals for danger or doubt (e.g., 5 short blasts)

💭 Think About

• Is vessel "A" actually changing course or speed to overtake, according to the problem statement and the illustration? How does that affect the need for a maneuvering signal under Rule 34? • Which of the listed sound signals are used to indicate an alteration of course to port or starboard, and which is used to indicate doubt or danger? • In open waters (not a narrow channel or harbor), are you always required to sound a whistle signal when overtaking, or only under certain conditions?

✅ Before You Answer

• Verify under Rule 34(a) when vessels in sight of one another must use short blast signals (does it say they are required for every passing, or only when altering course/approaching each other?) • Check that the chosen signal matches the actual action of vessel "A" (altering course to port, to starboard, or maintaining course). • Confirm that the signal you pick is not specifically defined in the rules for a different situation (such as danger and doubt, or restricted visibility).