The Bayesian, the award-winning superyacht, sank during a tornado off the coast of Sicily in the early hours of Monday.
The body of one person has been found, but six others – including British tech entrepreneur Mike Lynch – remain missing.
But what do we know about the ship?
The British-flagged 56 metre ship – previously called the Salute – was built in 2008 by Italian shipyard Perini Navi, and refitted in 2020.
Pic: Danny Wheelz
Its 75-metre mast is the world’s tallest aluminium mast, and the second tallest overall. The yacht can reach a maximum speed of 15 knots and weighs 473 tonnes.
The French design house Remi Tessier fitted out the Japanese-style interior decor, with touches of light and dark beige and dark wood furnishings, as well as a teak deck.
Pic: Danny Wheelz
The path of the last 24 hours of the Bayesian. Pic: MarineTraffic
It won the best exterior styling at The World Superyacht Awards in 2009, and best interior at the International Superyacht Society Awards 2008.
It has six guest bedrooms – one master, three doubles, and two twins – holding 12 people, and can carry another 10 crew members.
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Shipspotting.com says it is owned by a firm called Revtom Limited. Mike Lynch’s wife, Angela Bacares, is named as the sole shareholder of the firm on company documents.
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The yacht’s name would resonate with Mr Lynch because his PhD thesis and the software that made his fortune involved a statistical method known as Bayesian inference, based on an 18th-century theory, that helps forecasters predict outcomes more reliably.
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The price to charter the yacht is not stated, but similar vessels are listed at around £170,500 a week.