🔍 Key Concepts

• Rule 35 – Sound Signals in Restricted Visibility (especially parts for vessels at anchor and vessels engaged in fishing) • Difference between signals for a vessel underway vs. a vessel at anchor • When a bell only is used vs. when bell and gong are both required (length of vessel)

💭 Think About

• First decide: in fog, does a vessel engaged in fishing while at anchor use the signal for a fishing vessel underway, or the signal for a vessel at anchor? • Look at Rule 35 and separate the paragraphs: which ones apply to vessels underway, and which specifically apply to vessels at anchor? • Among the choices, which signals clearly belong to underway vessels, and which belong to anchored vessels?

✅ Before You Answer

• Verify which option(s) mention a bell (anchor signals) versus only whistle blasts (underway signals). • Check which options depend on the vessel being 100 meters or more in length (bell AND gong) and which apply to vessels under 100 meters (bell only). • Confirm from Rule 35 that the pattern one prolonged and two/three short blasts is associated with certain underway vessels (e.g., engaged in fishing, RAM, towing), not ordinary anchored vessels.