Extreme wind blamed for superyacht sinking that killed 7 last year: probe

Billionaire entrepreneur Lynch, 59, and his daughter Hannah, 18, were among the dead when the 56-metre (184 feet) Bayesian sank Aug. 19 last year.

The superyacht of British tech magnate Mike Lynch, which capsized last August off the coast of Sicily at the cost of seven lives, was knocked over by “extreme wind” and could not recover, British investigators said Thursday.

Billionaire entrepreneur Lynch, 59, and his daughter Hannah, 18, were among the dead when the 56-metre (184 feet) Bayesian sank Aug. 19 last year. The boat trip was a celebration of Lynch’s acquittal in a fraud case in the U.S. in June.

In an interim report on the disaster, Britain’s Marine Accident Investigation Branch said the boat was “vulnerable” to winds that were even lighter than the ones that tipped it over. The report was based on “a limited amount of verified evidence” as a criminal investigation by Italian authorities has restricted its access to the wreck and other pieces of evidence, it said.

The agency, which is investigating the disaster because the Bayesian was registered in the U.K, said the “vulnerabilities” were “unknown to either the owner or the crew,” as they were not included in the stability information book carried on board.

The report stated that the Bayesian was sailed to the site where it sank the day before in order to “shelter” from forecast thunderstorms. It said the disaster occurred at 4:06 a.m. local time, when wind speeds exceeded 70 knots (81 miles-per-hour), “violently” knocking the vessel over to a 90-degree angle in under 15 seconds.

It said that at the time of the incident, the vessel was in a “motoring condition” with its sails lowered, while the centerboard, which is used to help stabilize it, was in a “raised” position.

“You have the wind pushing the vessel over and then you have the stability of the vessel trying to push the vessel back up right again,” said Simon Graves, an MAIB investigator. “And what our studies found was that they show that the Bayesian may have been vulnerable to high winds and that these winds were likely to have been evident at the time of the accident.”

Inquest proceedings in the U.K. are looking at the deaths of Lynch and his daughter, as well as Morgan Stanley International bank chairman Jonathan Bloomer, 70, and his wife, Judy Bloomer, 71, who were all British nationals.