What is the function of the green helmet during replenishment-at-sea (RAS)?

During replenishment-at-sea (RAS), the function of the green helmet is primarily associated with the role of a signalman. This individual is responsible for using visual signals to coordinate and communicate between ships during the replenishment process. The green helmet signifies that the personnel wearing it are trained in managing the complex operations involved in RAS, which often include the movement of cargo and ensuring that all activities are conducted safely.

The role of a signalman is crucial as they relay important information and signal maneuvers to the crew involved in the evolution. Effective communication is essential to prevent accidents and ensure that the cargo transfer goes smoothly, as multiple vessels are frequently involved, maintaining a tight formation and navigating various hazards at sea. Thus, the significance of the green helmet as an indicator of the signalman role highlights its vital function in ensuring operational effectiveness during RAS exercises.