The Voyage Data Recorder (VDR) records key information from a vessel’s navigation and communication systems, acting as a black box in the event of an accident. Regular service and repair ensure that VDRs are functioning optimally, storing accurate data such as engine performance, bridge audio, and GPS information. Services include checking data storage capacity, replacing faulty sensors, and verifying data retrieval functions. Regular maintenance of the VDR ensures compliance with SOLAS regulations and enhances safety by providing critical information in the event of an incident, aiding in accident investigation and improving future navigation protocols.