Proper documentation is essential for the installation, activation, and operation of an Inmarsat-C terminal. It includes user manuals, regulatory compliance certificates, activation records, and accounting authority agreements. These documents help ensure that the terminal meets Global Maritime Distress and Safety System (GMDSS) requirements. Shipowners and operators should maintain updated documentation for troubleshooting and compliance checks. Keeping digital copies can also help in case of audits or system reconfigurations.