DSM GeoData is working on a three year contract 2001 – 2004 to provide 1:5,000 scale mapping of Ireland by stereo plotting techniques from 1:40,000 scale photography. All the data is captured 3-dimensionally and is fully topologically structured. Lines are multi-coded to represent all actual features delineated by a particular line. The photogrammetrically captured data is graphically edited to meet Ordnance Survey Ireland’s specification. The data is supplied to the client in OSi NTF Format.