Which of the following best describes the running lights on a sailing vessel?

The correct answer accurately captures the specific function and components of running lights on a sailing vessel, though the answer provided must be clarified as running lights are actually defined by their lighting functionalities, not by the equipment used to maneuver the sails.

Running lights are the navigation lights displayed on a vessel to indicate its presence, direction of travel, and activity while underway at night or in reduced visibility. Typically, a sailing vessel is equipped with red and green sidelights that indicate the port and starboard sides, respectively, and a white stern light to indicate the rear of the vessel. These lights serve as critical safety features to prevent collisions and ensure that other vessels can determine the direction and status of the sailing vessel.

Understanding the appropriate use and characteristics of running lights is essential for safe navigation, especially in conditions where visibility may be compromised, such as fog or nighttime sailing.