A vessel engaged in diving operations displays lights for which type of vessel?

A vessel engaged in diving operations displays lights to indicate that it is restricted in its ability to maneuver. This is due to the nature of diving operations, which often require the vessel to remain stationary and have divers submerged in the water. The display of appropriate signaling lights informs other vessels in the area about the restricted maneuverability of the diving vessel, ensuring that they maintain a safe distance and do not interfere with the operations. Such signaling is crucial for maritime safety, as it helps to prevent accidents involving vessels that may not be aware of the presence of divers in the water, therefore affirming the classification of the diving vessel as one that is restricted in maneuverability.