A single vessel being towed alongside shall show __________.

A single vessel being towed alongside shall show __________.

• A. Sidelights and a stern light
• B. Stern light only
• C. Masthead light and sidelights
• D. Two cones apexes together

Answer: (A)

When a vessel is being towed, it is treated as a towed vessel under the collision regulations and must display navigation lights that indicate its status to other vessels. The towed vessel does not show its own power-driven lights, but it must show sidelights and a stern light. The sidelights help other vessels judge the vessel’s sides and course, while the stern light confirms its position at the rear, signaling that it is being drawn from behind. This combination ensures other mariners can safely track the towed vessel, especially at night or in restricted visibility. Day signals that might be used to indicate towing exist for daylight operation (two cones apexes together), but at night the required lighting is sidelights and a stern light.

When a vessel is being towed, it is treated as a towed vessel under the collision regulations and must display navigation lights that indicate its status to other vessels. The towed vessel does not show its own power-driven lights, but it must show sidelights and a stern light. The sidelights help other vessels judge the vessel’s sides and course, while the stern light confirms its position at the rear, signaling that it is being drawn from behind. This combination ensures other mariners can safely track the towed vessel, especially at night or in restricted visibility. Day signals that might be used to indicate towing exist for daylight operation (two cones apexes together), but at night the required lighting is sidelights and a stern light.