Cargo ship struck Mosel lock in autopilot mode without operator intervention
A cargo ship operating under autopilot control collided unbraked with a lock gate on the Mosel River in Germany in December 2024, destroying the lock and stranding approximately 70 vessels. Prosecutors are investigating why the ship's captain failed to intervene despite being required to monitor the autopilot system continuously.
What happened
A cargo ship carrying scrap metal struck the Mosel lock gate at Müden, Germany in December 2024 while operating in autopilot mode at 12.2 kilometers per hour. Data analysis by the investigating prosecutor confirmed the ship was in autopilot when it collided unbraked with the lock gate.
Semi-autonomous operation with autopilot is permitted on the Mosel provided the ship's captain can intervene in the steering process at any time. A technical inspection found no defects in the ship's motor or steering system, and there was no evidence the captain had consumed alcohol or drugs.
Reported impact
Both wings of the lock gate were torn from their moorings, and the ship sustained damage to its bow. The repair operation was extensive, requiring heavy-lift cranes to remove lock components from the water.
Approximately 70 ships were stranded for multiple days until they could be emergency-locked through. The lock remained closed for approximately two months until repairs were completed in early February 2025. Damage was estimated at approximately 5.4 million euros.
Index analysis
The prosecutor's investigation identified that the captain failed to intervene in the steering process despite being required to monitor and control the autopilot system at all times. Possible human error or misassessment of the situation was the focus of ongoing investigations.
Governance controls
Semi-autonomous ship operation with autopilot on the Mosel is permitted by German waterway regulations, provided that the ship captain maintains continuous oversight and can intervene immediately when necessary.
Classification
Sources and evidence
Sources not yet published
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