From today, the ZDF documentary “Terra X: The Drama Surrounding the Superyacht Bayesian” is available on the streaming platform. The film will be broadcast on ZDF on Sunday 2 August 2026 at 7.30 pm. According to ZDF, the documentary features previously unseen video footage, witness statements and insights into the ongoing investigations.
The film focuses on the sinking of the ‘Bayesian’ on 19 August 2024 off Porticello in Sicily. Anyone wishing to find out more about the incident before the programme airs can find the the latest developments in the investigation into the sinking of the ‘Bayesian’.
The documentary centres on the question of why the 56-metre yacht capsized and sank within a matter of minutes. ZDF has announced that experts from the British Marine Accident Investigation Branch and scientists will be featured, amongst others. According to ZDF, Karsten Börner, captain of the neighbouring ‘Sir Robert Baden Powell’, will also be interviewed. His crew rescued survivors following the accident.
The ‘Bayesian’ was a sailing yacht, but the key issues go far beyond sailing. They concern behaviour whilst at anchor, sudden changes in the weather near the coast, night watches, emergency procedures and how quickly a seemingly controlled situation can turn into a distress situation at sea.
There were 22 people on board: twelve guests and ten crew members. Seven people died and 15 survived. The yacht sank off the coast of Sicily during the night of 18–19 August 2024, after the weather and conditions at the anchorage had deteriorated dramatically.
For motorboat owners, the safety aspect is particularly important here. Even a motor yacht or a larger cabin boat is not automatically safe during thunderstorms, strong winds and poor visibility. Anyone wishing to review their own procedures before the season starts will find additional practical advice on this in BOOTE, What to do on a boat during a thunderstorm.
The case has still not been fully resolved. The British safety investigation looked into the sinking with the aim of preventing future accidents. The Italian public prosecutor’s office, on the other hand, is pursuing criminal matters. In this regard, different explanatory approaches as opposed to, including the role of weather, ship characteristics and crew behaviour.
The first investigation report describes the events of the fateful night in detail and focuses on the stability of the luxury yacht in extreme gusts. Anyone wishing to delve deeper into the subject before watching the documentary will find an analysis in BOOTE, what the investigation report on the sinking of the ‘Bayesian’ describes.
Are you going to watch the documentary? If so, please feel free to share your thoughts in the comments afterwards.

Chief Editor Digital