Question 10

The Correct Answer is A **Why Option A ("fishing vessel") is correct:** The lights typically displayed in illustration D070RR (though the illustration is not provided, we must rely on standard nautical light conventions for a vessel required to display "BOTH INTERNATIONAL & INLAND" lights) for a vessel engaged in fishing are: 1. **Masthead light** (forward-most white light). 2. **Sidelights** (red on port, green on starboard). 3. **Sternlight** (white light facing aft). 4. **Special lights for fishing:** Two vertical lights, usually green over white. The green light indicates the vessel is fishing, and the white light indicates the direction of the nets/gear extending outward. A vessel engaged in fishing displays these combination lights (running lights plus special operational lights) and is required to comply with the Rules (both International—COLREGs—and Inland) by clearly signaling its status and maneuvers. **Why the other options are incorrect:** * **B) motorboat:** A motorboat underway typically displays a masthead light, sidelights, and a sternlight (or an all-around white light if under 12 meters). While it uses lights common to all vessels, it does not display the specific green-over-white fishing signals necessary to match the operational light configuration implied by a specialized illustration (like D070RR often depicts). * **C) sailboat:** A sailboat underway uses sidelights and a sternlight. If under power, it also uses a masthead light. A sailboat does not display the operational lights (like fishing or piloting lights) that would necessitate a specialized illustration showing both running lights and operational lights. * **D) pilot boat:** A pilot boat on duty displays special lights: two vertical lights, white over red (white top, red bottom) at the masthead, in addition to its running lights (sidelights and sternlight/masthead light). These are different from the green-over-white lights used by a fishing vessel.