A father of one of the missing yachtsmen has said he hopes is son Andrew is still alive, adding that rescue teams "should have checked" underneath the boat when it was spotted.
David Bridge told ITV News: "I hope he is still alive."
As he held back the tears, he added: "You've got to hope he is still alive, otherwise what's the point of doing this?"
"We just want them to resume their search and give us some hope. If they go out back in the plane then we've got hope, if they don't bother, we haven't got a hope," he said.
"They didn't see anybody on board. There could've been somebody underneath it. When you look at the pictures it's difficult to believe anybody could be underneath it, but somebody could have been underneath it, and it really should have been checked."
With no sign of a life raft or of debris, and with nearly 20,000 square miles having been searched, the hunt continues for another day.
Veteran yachtsman Tony Bullimore tells ITV News that there is a "strong possibility" the yachtsmen are still alive in the life raft.