When logging into the Inmarsat system using Inmarsat-C, it is necessary to:

Select the Ocean Region is the correct approach when logging into the Inmarsat system using Inmarsat-C. Each Inmarsat terminal is associated with a specific ocean region due to the satellite coverage and communication protocols that are region-dependent. By selecting the correct ocean region during the login process, the system can correctly route messages and ensure effective communication with the appropriate Land Earth Station (LES).

The process involves accessing services and networks that are configured for that particular region, as different regions may have different coverage and service limitations. Properly selecting the ocean region helps to avoid communication failures that can occur if the terminal is trying to connect to a satellite or LES outside of its designated area.

This highlights the importance of region selection in maintaining seamless operations within the satellite communication framework, ensuring that messages are sent and received without unnecessary delays or errors.