🔍 Key Concepts

• Rule 9 – Narrow Channels of the Navigation Rules • Responsibilities of a vessel proceeding along (following) the channel versus a vessel crossing it • Required position in the channel relative to the starboard or port side

💭 Think About

• Ask yourself: What is the basic, always‑applicable rule about where a vessel should navigate when proceeding along a narrow channel? • Consider which options describe absolute prohibitions ("must never") versus normal, permitted actions with conditions. • Think about which actions in the options are actually covered under other rules (like sound signals at bends) versus the core narrow channel requirement.

✅ Before You Answer

• Verify in Rule 9 what it says about keeping to a particular side of the channel when safe and practicable. • Check whether Rule 9 absolutely forbids overtaking in a narrow channel, or simply regulates how it is done. • Confirm which part of the Rules covers sound signals at bends and whether that is the primary statement about a vessel proceeding along a narrow channel.