Question 426Rules of the Road90% to pass
INTERNATIONAL ONLY At night, you sight the lights shown in illustration D055RR below. What do the lights indicate?

AI Explanation
The correct answer is D) A tug with a tow alongside.
The lights shown in illustration D055RR indicate a tug vessel with a tow alongside. This configuration is specified in the International Regulations for Preventing Collisions at Sea (COLREGS), which govern maritime navigation rules. Specifically, Rule 24(c) states that a power-driven vessel pushing ahead or towing alongside shall exhibit the same lights as a power-driven vessel underway, with the addition of a special flashing or all-round white light at or near the stern.
The other options are incorrect because they do not match the light configuration shown in the illustration. A tug not under command would not have this specific light arrangement, and a vessel fishing at anchor or a pipeline would not be displaying these navigation lights.
Related Questions
#424 INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown in illustration D041RR below and will pass 1/4 mile apart. If you are on vessel "A", in addition to the sidelight, which other light(s) will you see on vessel "B"? #425 INTERNATIONAL ONLY In addition to other required lights, which lights does a power-driven vessel pushing ahead or towing alongside display? #427 INTERNATIONAL ONLY You see the lights shown in illustration D066RR below. What do these lights indicate ? #427 INTERNATIONAL ONLY You see the lights shown in illustration D066RR below. What do these lights indicate? #428 INTERNATIONAL ONLY Which lights shall a single vessel being towed alongside show?