What lights are exhibited by a group of vessels being towed alongside or pushed ahead?

The correct response indicates that a group of vessels being towed alongside or pushed ahead exhibits sidelights and a sternlight. This is aligned with the requirements outlined in the COLREGs for vessels under tow.

When a vessel is towing another, or when there are multiple vessels being towed, the towing vessel is required to show its sidelights and a sternlight. The sidelights ensure that the vessel can be seen from the side, contributing to nighttime navigation safety by indicating its length and orientation. The sternlight serves the purpose of illuminating the rear of the towing vessel, which is equally important for other vessels to identify its position and movement.

When multiple vessels are being towed, they typically display the same lights as outlined, meaning that the last vessel in the tow will show its own sidelights, and potentially a sternlight, indicated as necessary under navigation rules to signal its presence on the water. This adherence helps maintain clarity in navigation and prevents collisions by ensuring that all vessels involved are properly illuminated and identifiable by others in the vicinity.

The other options do not correctly reflect the COLREGs requirements for tow configurations. Sidelights alone or just an all-round light would not provide sufficient information about the vessel's orientation or activity. Not displaying any lights