Rescue teams trying to access the submerged Bayesian yacht could be listening out for a timed banging noise, a senior university lecturer has said. Bayesian was moored around half-a-mile off the coast of Porticello off the coast of Sicily when it sank at about 5am local time on Monday. The yacht was battered during intense storms off the coast of Palermo and it is thought this led to a waterspout, a rare weather phenomenon, which caused the vessel to capsize .

Fifteen people have survived the Bayesian superyacht disaster including hero mum Charlotte Golunsk who saved her baby daughter's life . However, the Italian Coastguard said the six missing tourists from the incident, including British technology tycoon Mike Lynch and his daughter, are feared to have died with their bodies trapped. READ MORE: Gemma Collins left shaken after being caught at sea in terrifying Sicily storm for four hours Vincenzo Zagarola, spokesperson for the Italian Coastguard, said this was the working theory of officials on Sicily because it is believed the boat sank quickly and search and rescue efforts by sea and air have so far delivered no results.

He said: "We think they are still inside the boat, that is our very hard idea. Our search and rescue activity by sea and air has gone on for around 36 hours. Of course, we do not exclude that they are not inside the boat, but we know the boat sank quickly.

We suppose that the six people missing may not have had time to get out of the boat." But Italy's fi.