A rescue mission is under way off the coast of Sicily after the British-flagged luxury yacht Bayesian sank during freak weather early on Monday morning.

The vessel’s cook – understood to be Recaldo Thomas – has died and his body has been recovered, according to Sicily’s civil protection agency.

Some 15 people have been rescued from the boat, while six remain missing.

Specialist divers from the Italian fire brigade resumed their search early on Tuesday morning.

The body of a man recovered near the Bayesian yacht is believed to be that of Recaldo Thomas, a Canadian-Antiguan chef who was working on the boat.

His friends have been paying tribute to him. Gareth Williams, who lives in Antigua, knew Thomas for 30 years.

“I can talk for everyone that knew him when I say he was a well-loved, kind human being with a calm spirit,” he told the BBC.

The two grew up together in Antigua, where Thomas spent his time during off-season.

“He would come over to mine over the weekend and he would sing. He had the deepest, most sultry voice in the world, and a smile that lit up the room.

“He told me just the other day that he needed to work two more seasons to fix up his late parents’ house. He loved yachting, but he was tired.”

The six people who are unaccounted for have all been named.

Among them are British businessman Mike Lynch, who was recently acquitted of fraud in the US.

Several people on the boat, including some who are missing, were involved in his recent trial and there have been reports that the yacht trip was a celebration of Mr Lynch’s acquittal.

Mr Lynch is a tech entrepreneur who was once regarded by some as “Britain’s Bill Gates”.

Raised in Essex, he went on to study at the University of Cambridge, before co-founding software company Autonomy in 1996.

The 59-year-old made his riches by selling the company to US tech giant Hewlett-Packard in 2011 for $11bn (£8.6bn).

Mr Lynch became embroiled in a decade-long legal battle following the acquisition. He was acquitted in the US in June on multiple fraud charges, over which he had been facing two decades in jail.

He told BBC Radio 4 in August that he believed he had only been able to prove his innocence in US court because he was rich enough to pay the enormous legal fees involved.

“You shouldn’t need to have funds to protect yourself as a British citizen,” he said.

Mr Lynch was travelling with his daughter Hannah, who is also missing.

The 18-year-old is reportedly the younger of Mr Lynch’s two daughters.

She had just completed her A-levels and secured a place to read English at Oxford University, according to the Times.

Chris Morvillo is a lawyer who represented Mr Lynch in his US trial. Since 2011, he has been a partner at the Clifford Chance law firm in New York.

His biography on the firm’s website says that he served as assistant attorney for the southern district of New York from 1999 to 2005.

During his tenure, he worked on the criminal investigation surrounding the 2001 attacks on the World Trade Center.

American jewellery designer Neda Morvillo, wife of Mr Morvillo, is also unaccounted for.

Mr Morvillo’s employer, Clifford Chance, confirmed the news.

In a statement, a spokesperson for the law firm said: “We are in shock and deeply saddened by this tragic incident.”

Ms Morvillo designs jewellery under the name Neda Nassiri. Her website says she “has been designing and hand-crafting fine jewelry in New York City for over 20 years”.

Jonathan Bloomer is the chairman of the Morgan Stanley International bank and insurance company Hiscox.

The 70-year-old Briton was educated at Imperial College London and has previously served on a number of company boards.

Mr Bloomer appeared at trial as a defence witness for Mr Lynch, according to the the Financial Times. Media reports suggest the pair are close friends.

Aki Hussain, group chief executive of Hiscox, which Mr Bloomer has chaired since 2023, said: “We are deeply shocked and saddened by this tragic event.

“Our thoughts are with all those affected, in particular our chair, Jonathan Bloomer, and his wife Judy, who are among the missing.”

Judy, the wife of Jonathan Bloomer, is also among the six people missing.

Ms Bloomer is listed as a former director of property developer Change Real Estate along with her husband.

She has been called a “brilliant champion for women’s health” by a charity she has worked closely with.

Ms Bloomer has been a trustee and supporter of gynaecological cancer research charity the Eve Appeal for more than 20 years.

The charity’s chief executive, Athena Lamnisos, said she was “deeply shocked to hear the news that our very dear friend and her husband Jonathan, are among those missing”.

“Our thoughts are with Judy and Jonathan’s family, as well as all those who are still waiting for news after this tragic event,” she added in a statement.

Among the 15 people who were rescued are nine members of the yacht’s crew.

This means every member of the crew is accounted for minus the chef, who local authorities say has died.

Eight of the 15 who were rescued have been taken to hospital.

Dr Fabio Genco, who was part of the local emergency medical service that treated the survivors, said all of them had been discharged from hospital by Tuesday.

A British mother, named locally as Charlotte Golunski, was travelling on the yacht with her partner and baby girl. All three were rescued from the boat.

In an interview, she described holding her infant daughter above the surface of the sea to save her from drowning.

Ms Golunski is a partner at Mr Lynch’s company, Invoke Capital, where she has worked since 2012, according to her LinkedIn profile.

The Times has reported that she has previously worked for Autonomy, the company at the centre of Mr Lynch’s recent court case.

Another lawyer, Ayla Ronald, was also rescued along with her partner.

The New Zealand national works for Clifford Chance, where Mr Morvillo is a partner, and was part of Mr Lynch’s legal team for his June trial.

Her father told the Telegraph that she was “invited to go sailing as a result of the success in the recent United States court case”.

Angela Bacares, Mr Lynch’s wife and Hannah Lynch’s mother, is also among those who have been rescued.

On Monday, Ms Bacares was using a wheelchair after suffering ­abrasions on her feet, according to the newspaper La Repubblica.