A mariner called in a report on 12-7-18 of a rock north-east of the Double Breasted Cays waypoint. He said there is 12’ of water all around it at high tide but the obstruction comes within 4’ of the surface.
The obstruction was reported to be located at:
27º 11.2’ N
78º 16.28’ W
Slightly to the West of the common anchorage there.