[3] Geological Survey Ireland is a division of the Department of Communications, Climate Action and Environment and is based in Booterstown in Dublin.
It is responsible for providing geological advice and information, and for the acquisition of data for this purpose.
[3] The organisation managed the Irish National Seabed Survey (INSS, 1999–2005), which on completion was the world's largest civilian marine mapping programme.
The INSS mapped all of Ireland's waters over 200 m deep, principally in support of territorial claim, and covering over 600,000 km2.
GSI and the Dublin Institute for Advanced Studies operate the Irish National Seismic Network together.