BOTH INTERNATIONAL & INLAND You do NOT...

🔍 Key Concepts

• Rule 34 – Maneuvering and Warning Signals in the Navigation Rules • Difference between maneuvering signals (used when course and speed are understood) and danger/doubt signals (used when they are NOT understood) • Meaning of short blast vs prolonged blast and how many are required for a danger signal

💭 Think About

• Ask yourself: When you are unsure of another vessel’s intentions, are you in a normal maneuvering situation, or a potential danger situation? • Which type of signal is specifically described in Rule 34 as the one used when there is doubt about the other vessel’s actions? • Look at the options: which choice matches the pattern and number of blasts used worldwide to mean, “I don’t understand what you’re doing; this may be dangerous”?

✅ Before You Answer

• Verify in Rule 34 that one short blast and one prolonged blast are described as normal maneuvering or leaving-berth signals, not doubt signals • Identify which option uses a series of blasts (not just one) and is associated with danger or doubt • Confirm in the text of the rule that the danger/doubt signal requires not less than five blasts and specifies the blasts as short and rapid rather than prolonged

BOTH INTERNATIONAL & INLAND You do NOT understand the course or intention of an approaching vessel. Which signal should you sound?

Sound one short blast

Sound not less than five prolonged blasts

Sound one prolonged blast

Sound not less than five short blasts

🔍 Key Concepts

💭 Think About

✅ Before You Answer