Police divers have joined the search this morning for a man feared drowned after a boating accident killed three members of his family near Batemans Bay.AAP has named 47-year-old Sam Sgroi as one of five people on board the 4.9-metre Shark Cat when it overturned off Maloneys Beach near Batemans Bay just before 2pm on Saturday.His parents Con, 73, and Tina Sgroi, 66, died in the accident, along with his 10-year-old niece, Giana. The girl and her grandparents were pulled from the water and could not be revived.Giana’s sister, 11-year-old Georgina Sgroi, survived after being found clinging to the speed boat's hull, after the boat flipped while crossing a treacherous sandbar in an area known as Yellow Rock.The search for Mr Sgroi resumed at first light today, with water police from Eden, Polair, four marine rescue vessels, surf lifesaving rescue boats and a jet ski all involved, as well as the divers.Lifesaver Anthony Bellette saved Georgina when he found her clinging to the capsized vessel.‘‘She was very upset obviously, her family’s missing,’’ Mr Bellette told the Seven Network.The children were believed to be on holidays from Victoria to stay with their grandparents at Batemans Bay.Family friends Trish and Russell Knight said they were devastated by the news.‘‘They were such a lovely family,’’ Mr Knight said.The search for Mr Sgroi resumed yesterday but was called off at 11am when visibility, wind and ocean conditions made it dangerous to continue.Batemans Bay duty officer David Silversides said hopes of finding Mr Sgroi alive were extremely slim.Ports Minister Duncan Gay said he had been advised none of the occupants on the Shark Cat were wearing a life jacket.‘‘The challenge is to make people understand accidents can and do happen, and it’s essential to wear a life jacket as a precaution,’’ Mr Gay said.