Inmarsat C is a global satellite communication service providing text-based messaging, email, and distress alerting for maritime and remote operations. Unlike voice-based systems, Inmarsat C operates using a store-and-forward messaging system, ensuring reliable data transmission. Ships and offshore installations equipped with Inmarsat C terminals can send messages via satellites to designated Land Earth Stations (LES), which then relay the information to the intended recipient. This system is widely used for safety communications, including the Global Maritime Distress and Safety System (GMDSS). When an emergency occurs, an Inmarsat C terminal can transmit a distress alert containing the vessel’s position and identification to a Rescue Coordination Center (RCC). The service also supports Enhanced Group Call (EGC), which allows authorities to send important navigational and weather warnings to multiple ships simultaneously. Because of its reliability and global coverage, Inmarsat C remains a preferred choice for maritime communication. Regular testing and proper maintenance of terminals are necessary to ensure compliance with international maritime regulations. The system helps ships remain connected even in remote oceanic regions, contributing to maritime safety and efficient operations worldwide.
