A tamper-proof device recording bridge audio, radar images, and navigational data onto a protected capsule for post-incident investigation.
Quick facts
Regulation
SOLAS Chapter V
Regulation
IMO MSC.163(78)
In practice
For the OOW, the VDR is both a safety tool and a professional responsibility. Its continuous recording means that all bridge conversations, decisions, and actions are preserved verbatim; investigators and courts have used VDR recordings to reconstruct the sequence of events leading to collisions and groundings. Officers must therefore ensure that bridge communications conform at all times to the bridge resource management (BRM) standard, documenting intentions and cross-checks clearly. Monthly VDR playback tests and annual performance tests by an approved service provider are required to confirm correct operation. A simplified VDR (S-VDR) is fitted on older vessels above 3,000 GT not required to carry a full VDR.
Regulatory detail & full definition
A Voyage Data Recorder (VDR) is a tamper-proof device required by SOLAS Chapter V, Regulation 20 on vessels of 3,000 GT and above on international voyages, designed to continuously record bridge audio conversations, radar images, AIS data, electronic chart information, ECDIS display data, speed, heading, depth, navigational alarms, and hull and machinery status data. The data is stored on a protected capsule capable of surviving fire, sinking, and mechanical impact so that investigators can recover it after a casualty. Performance standards are defined in IMO MSC.163(78) and its successor resolutions.
For the OOW, the VDR is both a safety tool and a professional responsibility. Its continuous recording means that all bridge conversations, decisions, and actions are preserved verbatim; investigators and courts have used VDR recordings to reconstruct the sequence of events leading to collisions and groundings. Officers must therefore ensure that bridge communications conform at all times to the bridge resource management (BRM) standard, documenting intentions and cross-checks clearly. Monthly VDR playback tests and annual performance tests by an approved service provider are required to confirm correct operation. A simplified VDR (S-VDR) is fitted on older vessels above 3,000 GT not required to carry a full VDR.