MAIB Report: Excessive Rudder Input Caused Towline Failure on Svitzer Avon
Incident OverviewThe UK Marine Accident Investigation Branch (MAIB) has released its findings on the towline failure involving the tug Svitzer Avon in February 2025. The incident occurred during departure operations from Royal Portbury Dock, highlighting critical lessons in towing procedures and vessel handling.Sequence of EventsAt approximately 1954 on 4 February 2025, the UK-registered tugs Svitzer Avon and Svitzer Brunel exited the lock at Royal Portbury Dock under tow. Shortly after clearing the lock, the towline between the two vessels parted, disrupting operations and posing safety risks to the crew.MAIB FindingsThe investigation determined that the primary cause of the towline failure was an over-correction in rudder input by the Svitzer Avon’s crew. This abrupt maneuver generated e...


