7. The Chief Surveyor shall be responsible for establishing a co-ordinated cadastre and may, for that purpose —
establish and maintain a network of survey control marks with recorded co-ordinates for use in surveying, mapping and related practice;
declare, by notice in the Gazette, specified areas to be designated survey areas, being areas of land in respect of which cadastral surveys must be carried out by reference to survey control marks in accordance with survey instructions under this Act, and for which co-ordinates must be determined in accordance with those instructions;
approve and record the co-ordinates of the boundaries of land within each designated area as determined by surveys carried out in the area (whether before or after the declaration of the area as a designated survey area), convert the co-ordinates recorded in relation to those parcels of land within the area and make any necessary adjustments to the recorded co-ordinates;
where the co-ordinates for all parcels of land within a designated survey area have been so approved, recorded, converted and adjusted, declare, by notice in the Gazette, that area to be within the co-ordinated cadastre;
generate, from the co-ordinated cadastre, maps for any area of land within the co-ordinated cadastre; and
where the co-ordinates for all parcels of land in Singapore have been declared to be within the co-ordinated cadastre under paragraph (d), declare, by notice in the Gazette, that the maps generated from the co-ordinated cadastre shall supersede all maps published under the repealed Act.