Explanation: SafetyNET is a global system for broadcasting Maritime Safety Information (MSI) as part of GMDSS. It relies on the Inmarsat-C system, which uses geo-targeting. For a vessel to receive *all mandatory MSI* relevant to its current location, the Inmarsat-C terminal must be: 1. **Logged in:** This ensures the terminal is active and registered with the Land Earth Station (LES) to receive messages. 2. **Reporting an accurate position:** The SafetyNET system uses the vessel's reported geographical position to determine which NAVAREA(s) the vessel is currently within. MSI broadcasts are then automatically directed to terminals located in those specific NAVAREAs. Without an accurate position, the vessel might not receive crucial safety information for its actual operational area. Therefore, option A correctly identifies these essential requirements for proper MSI reception via SafetyNET. Options B and D are incorrect because vessels do not need to notify NAVAREA coordinators about their use of SafetyNET; the system automatically delivers broadcasts based on terminal position. Option C is incorrect because SafetyNET broadcasts are primarily targeted by NAVAREA, which are specific geographical areas, rather than solely by Inmarsat Ocean Region or a "destination" region. The crucial factor is receiving MSI for the *current* NAVAREA.