🔍 Key Concepts
• Sound signals in or near areas of restricted visibility (fog signals) under Rule 35 of the Navigation Rules
• Difference between a vessel underway making way, underway but not making way, and stopped/at anchor
• Which signals are for power-driven vessels, which are for vessels at anchor, and which are for special vessels (e.g., towing, NUC, fishing)
💭 Think About
• First decide: in fog, is your vessel still considered underway when you stop your engines and are dead in the water? How do the Rules define "underway"?
• Look at the options and match each pattern of blasts to the type of vessel or status (e.g., power-driven making way vs. not making way vs. at anchor). Which pattern goes with which?
• Ask yourself: does the question say anything about being anchored or not under command, or does it only mention engines stopped and being dead in the water?
✅ Before You Answer
• Verify the definition of "underway" in the Rules of the Road (Navigation Rules definitions, Rule 3).
• Check Rule 35 for the exact fog signal required for a power-driven vessel underway but not making way.
• Make sure you are not accidentally choosing the signal for a vessel at anchor or a special vessel (towing, NUC, fishing, etc.) since the question does not say any of those apply.