What lights are exhibited by a vessel recovering a helicopter while making way?

A vessel that is engaged in the operation of recovering a helicopter while making way is required to display a specific set of lights to ensure safe navigation and signaling to other vessels. The correct answer indicates that the vessel should show three all-round lights arranged vertically as red over white over red, alongside the standard side lights, stern light, and masthead light.

The arrangement of red over white over red serves a crucial purpose: it indicates that the vessel is constrained by its draft, meaning that it has limitations concerning its ability to maneuver, especially during the helicopter recovery operation, which may take precedence over its normal navigational duties. Additionally, the inclusion of side lights, a stern light, and a masthead light is necessary to fulfill the visibility requirements defined in the COLREGs for a vessel under way, ensuring that its position and heading can be adequately identified by other vessels in proximity.

This combination of lights not only communicates the specific nature of the activity being undertaken but also reinforces the vessel’s navigational intent, helping to maintain safe distances and prevent collisions. The other options do not accurately represent the requirements for a vessel engaged in this particular operation, either failing to include vital lighting or misrepresenting the safety signals needed during such a complex task.