Darren Williams, the uncle of missing yachtsman James Male, told ITV News the family have not yet spoken to the US Navy but added that:
In the absence of a life raft with the boat we are optimistic that they are in that in Atlantic.
We are all still positive at the moment.
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.