🔍 Key Concepts

• Rule 18 – Responsibilities between vessels in the International and Inland Navigation Rules • The priority ‘pecking order’ of vessels: not under command, restricted in ability to maneuver, constrained by draft, fishing, sailing, power-driven • Exact definitions of vessel not under command (NUC) and vessel restricted in her ability to maneuver (RAM) in the Rules

💭 Think About

• First, recall which types of vessels are at the very top of the right‑of‑way hierarchy and which must generally keep clear of which others. • Look carefully at which vessel in each option is supposed to keep out of the way. Does that match the order given in Rule 18? • Pay attention to any limiting phrases like “so far as possible” and think about which vessel that wording is actually used for in the Rules.

✅ Before You Answer

• Verify in Rule 18 whether a vessel not under command is ever required to keep out of the way of another special‑category vessel (like fishing or RAM). • Check which vessel must keep clear of a vessel restricted in her ability to maneuver under Rule 18. • Confirm which vessel types the Rules explicitly say a vessel engaged in fishing must keep out of the way of, and whether that includes sailing vessels.