🔍 Key Concepts

• Rule 35 – Sound Signals in Restricted Visibility (fog signals) • The special identity signal for a pilot vessel engaged on pilotage duty (four short blasts) • The difference between a vessel underway, at anchor, aground, or not under command

💭 Think About

• Ask yourself: In fog, does a pilot vessel’s identity signal replace the normal fog signal, or is it sounded in addition to whatever signal fits her actual condition? • Which of the listed conditions is specifically mentioned in Rule 35 as a situation where a vessel may add the pilot identity signal on top of the normal fog signal? • Think about whether a vessel that is no longer on pilotage duty is still allowed to use the special pilot identity signal at all.

✅ Before You Answer

• Verify exactly what Rule 35 says about a pilot vessel ‘engaged on pilotage duty’ and when she may sound four short blasts. • Check which status (underway, not making way, at anchor, aground, not under command) is explicitly combined with the pilot identity signal in the rule text. • Confirm that using the pilot identity signal while not actually on pilotage duty would be improper.