🔍 Key Concepts

• Sound signals in or near areas of restricted visibility (fog, heavy rain, snow) • The specific rule for vessels being towed and how their signal differs from the towing vessel • Difference between signals used by power-driven vessels underway and towed vessels

💭 Think About

• First, recall what sound signal the towing vessel makes in fog. Then consider: does the towed vessel make the same signal or a different one? • Ask yourself: is the towed vessel under its own power, or is it restricted in maneuverability because it’s being towed? How might that affect its signal? • Consider how many blasts are used to show a vessel is underway and making way, and how many short blasts are added to indicate a special condition (like being towed).

✅ Before You Answer

• Verify in the Navigation Rules section on Sound signals in restricted visibility (Rule 35). • Check the part of Rule 35 that specifically mentions vessels being towed and notice the exact pattern of blasts. • Confirm whether the manned vessel being towed is required to make a different signal from the towing vessel, and how many short blasts are added to the prolonged blast.