VERTCRS["Flannan Isles height",VDATUM["Flannan Isles"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],USAGE[SCOPE["Geodesy, engineering survey."],AREA["United Kingdom (UK) - Great Britain - Scotland - Flannan Isles onshore."],BBOX[58.21,-7.75,58.35,-7.46]],ID["EPSG",5748]]