Question 30 GLI02 - Mate of Unlimited Tonnage

BOTH INTERNATIONAL & INLAND You see ONLY the light shown in illustration D080RR below. Which type of vessel are you observing?

Diagram for USCG GLI02 - Mate of Unlimited Tonnage: BOTH INTERNATIONAL & INLAND You see ONLY the light shown in illustration D080RR...
A vessel on pilotage duty
B law enforcement vessel
C sailing vessel
D vessel engaged in fishing
AI Explanation

The Correct Answer is C **Why option C ("sailing vessel") is correct:** Illustration D080RR shows a combination of lights: 1. **Red over Green (Vertical)**: These lights, visible around the horizon (360 degrees), are the specific identification lights for a **sailing vessel** when viewed from the stern or side. They indicate that the vessel is a sailing vessel but is also operating under power (mechanically propelled) and is therefore required to exhibit these specific lights in addition to the standard sidelights and sternlight (or combined lantern). 2. **White Sidelights and White Sternlight (or a Tri-Color Lantern):** A sailing vessel under 20 meters in length may combine the required navigation lights (red port, green starboard, and white stern light) into a single tri-color lantern at the masthead. While the illustration usually focuses on the identifying masthead lights, the combination of red over green identifies the vessel type as a sailing vessel. **Why the other options are incorrect:** * **A) vessel on pilotage duty:** A vessel engaged in pilotage duty exhibits an **all-around white light over an all-around red light** (White over Red). The illustration shows Red over Green. * **B) law enforcement vessel:** While law enforcement vessels often display special flashing blue lights, their basic navigation status lights would depend on their activity (e.g., restricted in ability to maneuver). The specific identification lights for Red over Green do not signify a general law enforcement vessel. * **D) vessel engaged in fishing:** A vessel engaged in fishing (trawling or non-trawling) exhibits an **all-around red light over an all-around white light** (Red over White). The illustration shows Red over Green.

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