For how long must a transfer operations work area be lighted during nighttime hours?

The requirement for a transfer operations work area to be lighted during nighttime hours is crucial for safety and visibility. Lighting must be maintained from sunset to sunrise to ensure that all safety measures are adhered to and that personnel can safely conduct operations during these hours. This continuous lighting helps to prevent accidents and enhances the visibility of both the operations being conducted and any potential hazards. It provides a clear view of the work area, making it easier for crew members to navigate and perform necessary tasks while reducing the risk of incidents due to low visibility.

The other choices do not convey the necessary coverage for the evening and nighttime operational safety. For example, lighting during specific times like "from dawn till dusk" or "during vessel operations only" does not adequately cover the hours when it is actually dark. Stating "all night long" implies a constant state of lighting without defining the specific timeframe needed, which can lead to ambiguity in operational protocols. Thus, specifying the requirement as being in effect between sunset and sunrise aligns with established safety regulations for transfer operations.