Question 15

The Correct Answer is A **Explanation for A (A seaplane):** Rule 18 (Responsibilities between vessels) of both the International Regulations for Preventing Collisions at Sea (COLREGs) and the Inland Rules establishes a hierarchy of precedence. At the very top of this hierarchy (meaning they must keep out of the way of almost all other vessels) is a power-driven vessel when underway, and slightly below that is a seaplane. Rule 18(e) states that a seaplane on the water shall, in general, keep clear of all vessels and is generally considered not to impede their navigation. Therefore, a seaplane should not impede the navigation of a power-driven vessel. **Explanation why other options are incorrect:** * **B) A sailing vessel:** Rule 18 states that a power-driven vessel underway shall keep out of the way of (i.e., should not impede) a sailing vessel. * **C) A vessel not under command (NUC):** Rule 18 states that a power-driven vessel underway shall keep out of the way of a vessel not under command. The NUC is considered a privileged vessel due to its inability to maneuver. * **D) A vessel engaged in fishing:** Rule 18 states that a power-driven vessel underway shall keep out of the way of a vessel engaged in fishing. Fishing vessels using nets, lines, trawls, or other gear which restrict maneuverability are considered privileged.