On October 12, 2011 at 05:30 UTC the PSLV-CA (PSLV-C18) rocket-carrier was launched from Sriharikota spaceport, 80 km from Chennai, India. The rocket orbited 4 satellites - Megha-Tropiques, SRMSat, VesselSat-1, Jugnu. PSLV means Polar Satellite Launch Vehicle.
Megha-Tropiques with its circular orbit inclined 20 degree to the equator will enable climate research and also aid scientists seeking to refine prediction models.
The three small satellites that were ferried by the PSLV-C18 were the 10.9-kg SRMSAT built by the students of SRM University near Chennai, the three-kg remote sensing satellite Jugnu from the Indian Institute of Technology-Kanpur (IIT-K) and the 28.7-kg VesselSat from LuxSpace of Luxembourg to locate ships on high seas.