🔍 Key Concepts

• Rule 35 – Sound signals in restricted visibility in the Navigation Rules • The specific fog signals for vessels underway but not making way, vessels at anchor, and vessels engaged in fishing • The difference between signals for underway, making way, and at anchor

💭 Think About

• First, decide: is a vessel engaged in fishing underway treated more like an anchored vessel or like a vessel underway for fog signals? • Compare how often and what type of sound signal (short/long blasts, bell, gong) each of the listed vessel types must make under Rule 35. • Ask yourself which of the options is also an underway vessel in restricted visibility and would therefore use a whistle signal rather than just bell/gong signals.

✅ Before You Answer

• Verify in Rule 35 what sound signal is prescribed for a vessel engaged in fishing underway (how many blasts and how often). • Check which of the answer choices describes a vessel that uses only anchor signals (bell/gong) versus whistle signals (prolonged/short blasts). • Confirm which of the listed vessels is underway but not making way and compare its required signal to that of a fishing vessel underway.