What action should be taken on changing from one ocean region to another?

The recommended action when changing from one ocean region to another in the context of satellite communications is to log out of the current satellite and log in to the correct satellite. This process is essential because different ocean regions may be serviced by different satellites, which are optimized to provide coverage and connectivity for their specific areas. By logging out and then logging in to the appropriate satellite, the system ensures that it connects to the highest quality and most applicable signal available for that region.

This action is necessary to maintain a reliable communication link, which is a critical aspect of GMDSS operations. Satellites are designed to cover specific geographic areas, and the automatic switching process may not always align perfectly with the vessel's current position and satellite coverage. Therefore, manually logging in to the correct satellite is the most effective way to ensure seamless communication.

Maintaining proper communication is crucial for safety, especially in maritime operations where timely information can make a significant difference in emergency situations.