Claudi:
Documents don't lie, people do. Sometimes there are contradictory accounts in contemporary documents, you know this plus not everything that is in an antique document is necessarily true just because you found it in an archive in Sevilla. One has to analyze several independent reports and I had come across this information sometime ago but there are many other documents that range from 1605/06/08/12 that state that there were no survivors aboard the four missing ships. One of which is from the same Governor of Cuba, Pedro de Valdes, which I would assume you have in your documents stating that there were no survivors. In particular a document from 1612 states that there were no survivors so I would put in doubt the veracity of what that document states. You perhaps know that there were several search expeditions after the event, the first by the fragata San Diego of Sebastian Fernandez Pacheco and the San Simon led by Rafael Perez. There was a later expedition that left Cartagena in 1607 and there is no mention of any survivors in any of these documents. The most contradictory fact is that the San Cristobal which survived the storm and ended up in Cartagena finally returned at the end of December 1606 with the Armada de la Guardia of General Jeronimo de Portugal, don't you think they would have mentioned this very critical information that there was a survivor that could finally tell where the galleons sunk? That never happened... because there were no survivors.