DisgrifiadLlanrhidian sands covers an extensive area from Whiteford Flats in the west to Dalton Point in the east (as shown on the 1839 edition of the Admiralty Charts).
Sources include:
Historic Admiralty Chart 1167-A3, RCAHMW Digital Collections sourced from the UK Hydrographic Office and published in 1839
Maritime Officer, RCAHMW, April 2011.