What does VMS stand for in maritime navigation?

In maritime navigation, VMS stands for Voyage Management System. This system is crucial for planning, monitoring, and managing a vessel's route and operations throughout its journey. A Voyage Management System helps ensure that the vessel adheres to its planned route while considering factors such as weather conditions, traffic, and navigational hazards. It provides tools for the crew to optimize the voyage, enhance safety, and improve efficiency.

The other options each refer to different systems that serve other purposes. For example, a Vessel Management System typically focuses on the operational aspects of a ship's performance and maintenance rather than voyage planning. A Visual Monitoring System is generally concerned with the visual observation of navigational and operational components, while a Vessel Monitoring Service may relate to tracking and ensuring compliance with regulations, but it does not encompass the broader functionalities of a Voyage Management System. Thus, the choice of "Voyage Management System" accurately represents the correct term in the context of maritime navigation.