🔍 Key Concepts

• Rule 35 – Sound signals in restricted visibility (Navigation Rules) • Difference between a power-driven vessel underway and a towing vessel in restricted visibility • How sound signals change when towing, pushing ahead, or towing alongside

💭 Think About

• First decide: In a heavy rain storm, are you in a situation covered by the restricted visibility sound signals? Which rule applies? • Ask yourself: Is a vessel pushing a barge ahead treated the same as a normal power-driven vessel underway, or does it fall under the towing category with a modified signal? • Compare the required signals in Rule 35 for (1) a normal power-driven vessel underway making way and (2) a vessel engaged in towing. Which pattern (prolonged vs short blasts) matches towing/pushing ahead?

✅ Before You Answer

• Confirm in Rule 35 which specific paragraph covers a vessel engaged in towing, pushing ahead, or towing alongside in restricted visibility • Verify the number and order of prolonged vs short blasts for that type of vessel (e.g., prolonged alone vs prolonged + short blasts) • Check the time interval requirement (e.g., every two minutes) and match it to the answer choices