The US Coast Guard rescued two people this weekend after their luxury sports yacht sank off the Florida coast. The operator of the Atlantis, an 80-foot yacht. alerted the US Coast Guard on Saturday morning that the boat had struck an object and was taking on water. The yacht was three miles off the coast of the picturesque city of St Augustine, Florida when the call came in. Pictures showed the stern of the vessel sinking beneath the waves before it finally tipped into a vertical position and sank further.