What is the primary function of the INMARSAT-C system in maritime communication?

The INMARSAT-C system is primarily designed for maritime communication, with a key focus on enabling routine and distress communications. This functionality is critical for vessels at sea, as the system allows operators to send and receive messages that are essential for navigation, safety, and operational reporting.

Routine communications can involve sending position reports, weather updates, and other crucial information that helps in the safe and efficient management of marine operations. In terms of safety, the distress communication capability is vital, as it allows mariners to send emergency alerts and location data when in danger, ensuring swift response from rescue services.

Other options, while relevant in the broader context of communication services, do not accurately reflect the primary use of the INMARSAT-C system. For instance, while internet access might be facilitated through modern systems aboard ships, the INMARSAT-C specifically does not provide high-speed internet connectivity and is not designed for streaming video or multimedia content.