procurement of tidal sensors for up-gradation of tidal observatories , for supply heading , supply, installation and commissioning of non-contact radar type tide gauge, pressure sensors, metereological sensor, gnss equipment, data logger, solar panel ups, batteries and other power supply and control equipments, router and other communication equipments, protective enclosure, mast and otherequipment as detailed in technical specifications , supply, installation andcommissioning of current meter as detailed in technical specifications , installation of communication system i.e. primary: adsl / broadband or vsatb ) secondary: wireless cellular i.e. gsm / cdma gprs / lte ( 2g / 3g / 4g / 5g ) at tidal observatories as detailed in technical specifications , comprehensive on-site full operational and maintenance support for all components of the tidal stations for a period of 5 years , supply, installation andcommissioning of central data receiving and processing station ( cdrps ) hardware, software, ups and batteriesas detailed in technical specifications , comprehensive on-site full operational and maintenance support for all components of the central data receiving and processing station ( cdrps ) for a period of 5 years as detailed in technical specifications , training for operation and regular upkeep and preventive maintenance