**Colin Martin *was reader in maritime archaeology at St Andrews University and has directed excavations on three Armada shipwrecks.Geoffrey Parkerteaches history at The Ohio State University and has published forty books. Both served as historical consultants on the BBC documentary Armada *.

**Colin Martin *was reader in maritime archaeology at St Andrews University and has directed excavations on three Armada shipwrecks.Geoffrey Parkerteaches history at The Ohio State University and has published forty books. Both served as historical consultants on the BBC documentary Armada *.