Maritime Safety Information is promulgated via satellite through which system?

Maritime Safety Information (MSI) is promulgated via satellite through the SafetyNET system. This service is part of the Inmarsat system and provides an essential method for delivering critical information about safety at sea, including navigational warnings, meteorological forecasts, and other relevant maritime information to vessels equipped with appropriate communication equipment.

SafetyNET operates by utilizing geostationary satellites to ensure that information is delivered reliably and promptly. This capability is crucial for mariners to receive updated and timely safety messages while at sea, which helps in making informed navigational decisions, thereby enhancing maritime safety.

While other options listed may relate to maritime communication and safety, only SafetyNET is specifically designed to disseminate Maritime Safety Information via satellite, making it the correct choice for this question. Techniques like NAVTEX, for example, are effective for shore-based broadcasts, while AMVER is primarily for voluntary ship reporting, so they do not function through satellite systems specifically for MSI.