🔍 Key Concepts

• Rule 35 – Sound signals in restricted visibility of the Navigation Rules • Difference between power-driven, sailing, and vessels at anchor in fog • Special sound signals for vessels restricted in their ability to maneuver or engaged in fishing

💭 Think About

• First decide: which category of vessel uses only a bell when at anchor in fog, and which must also use a gong or additional signals? • Think about whether the bell-only signal is linked to being at anchor, to being engaged in special operations, or to being not under command/limited maneuverability. • Ask yourself which vessels get extra sound signals (more complex patterns) beyond the simple bell ringing.

✅ Before You Answer

• Verify in Rule 35 which vessels at anchor use bell only and which use bell plus another sound (like a gong). • Check if a vessel restricted in her ability to maneuver has any additional requirements beyond a normal anchored vessel. • Confirm whether being engaged in fishing changes the anchor sound signal pattern or just the underway pattern.