🔍 Key Concepts

• Rule 3 – General Definitions (definition of “vessel”) in the Navigation Rules • The phrase "used or capable of being used as a means of transportation on water" • How special units (e.g., WIG craft, drilling units, fixed barges) are treated under the Rules

💭 Think About

• For each choice, ask: Is this object used, or at least capable of being used, to transport people or goods over water? • Consider whether being permanently attached or affixed changes something from a vessel into more of a fixed platform or structure. • Think about why the Rules need to apply: Which of these objects could realistically be involved in a collision situation that the Rules are designed to prevent?

✅ Before You Answer

• Look up the exact wording of the definition of “vessel” in Rule 3 of the Navigation Rules. • Check whether a wing-in-ground (WIG) craft is specifically mentioned or treated in the Rules. • Decide, for each option, whether it is capable of navigation / transportation on water, or is instead treated as a fixed installation/structure.