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What we know of the sinking Mike Lynch's Superyacht in Sicily

Seven people were killed in the sinking of an luxury yacht off the coast of Sicily on August 19, including British tech mogul Mike Lynch, Hannah, and Jonathan Bloomer, a Morgan Stanley executive.

What we know about this accident

VIOLENT STROKE

The Bayesian (a 56-metre-long superyacht with a British flag) was anchored near Porticello in Palermo when it went down during a severe weather event.

The prosecutor Raffaele Cammarano stated on Saturday that the event was likely a “downburst”, a strong, but frequent downward wind at sea. This is different from a waterspout because it involves rotating winds similar to a tornado.

The coastguard said that, given the weather forecasts, it was not wrong for the Bayesian to be moored off shore rather than sheltering in port. A yacht that was anchored near the Bayesian survived the storm without damage.

Lynch's spouse, who owned the Bayesian, was also on board. Nine out of ten crew members and Lynch survived. The survivors were discovered on a liferaft. Six of the twelve passengers were killed. The yacht's Captain James Cutfield is under investigation by prosecutors for manslaughter, and the shipwreck.

First, STERN went down

According to MarineTraffic, the Bayesian sent a last signal via its tracking Automatic Identification System at 0206 GMT before it sank.

Ambrogio Carttosio, the Chief Prosecutor said that a red flare was launched into the sky to alert rescue services of the emergency at 0238 GMT. This is more than 30 min after the boat went down.

Girolamo Bintivoglio, the head of Palermo Fire Brigade, told reporters that the boat has sunk from the stern, and it is now lying on its port side, at a depth around 50 meters (164 feet).

He said that the bodies were discovered in the cabins to the left of the boat where passengers might have searched for bubbles of remaining air.

The prosecutor Cammarano stated that the passengers probably fell asleep during the storm, which is why they did not escape.

'INCOMPREHENSIBLE'

It is difficult to understand how the Bayesian could have sunk so quickly. According to seafarers and engineers, it would have taken many hours to fill it up with water.

Some have suggested that one or two portholes, window or other openings were left open inadvertently by the crew or damaged by the storm. This allowed water to enter.

Experts wondered also if the yacht's keel was up, which could have compromised its stability. The keel, a stabilising fin structure beneath the hull that can be lifted partially to reduce the boat's depth in shallow water or harbours.

The prosecution has said that it is too early to comment about either hypothesis. The prosecutors also claimed that crew members weren't immediately tested for drugs or alcohol because they were still in shock after being rescued.

UNSINKABLE

Perini Navi is an Italian luxury boat builder. The 72-metre tall mast was the tallest in the world. However, early reports of the mast breaking during the storm were unfounded.

Giovanni Costantino said that the Perini yacht is "one of most safe boats in the World" and virtually unsinkable.

He claimed that the sinking occurred because of a series of human mistakes, given that the storm had been predicted. His assertions were partly based on the Automatic Identification System. The captain and crew have not publicly spoken about the accident and all attempts to contact them have failed.

Costantino stated that if the crew had shut all the doors and hatches and started the engine and lifted the anchor and lowered the keel, the yacht would not have been damaged.

The data shows that it takes 16 minutes after the yacht begins to take on water from the moment the wind starts buffeting it, before it sinks.

It has not been possible to confirm the claims of his. Giselda Vasgnoni (Reporting) Additional reporting by Giulia Segri, Alvise Armellini, Matteo Negri and Josephine Mason, London; Editing and Sharon Singleton, Ros Russell

(source: Reuters)