SN-105 is the first cruise conducted as a part of the Second International Indian Ocean Expedition (IIOE-2). IIOE-2 was launched as well as SN-105 was flagged off at Goa by the Minister of State for Science and Technology, Govt. of India on 4 December 2015. The major objective of this multidisciplinary observational expedition is to understand the structure of water masses in the western Indian Ocean along 67E and possibly assess the difference in their characteristics with respect to the measurements made during IIOE. The other objective of the cruise is to understand the physical-chemical-biological characteristics in the equatorial Indian Ocean and their interrelationships. The major observational objectives are to map the hydrography in the upper 1000m where the Red Sea, Persian Gulf and Arabian Sea High Salinity water are known to be present, collect water samples to determine chemical, biological and optical parameters.

This cruise will be dedicated to the recovery and deployment of RAMA Buoys & NIOT Omni & Tsunami Buoys. The moorings are a part of the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA). This array is under development as part of a multi-national effort to provide data essential for monitoring, understanding, and predicting basin scale ocean-atmosphere variability such as the Asian monsoon, the Indian Ocean Dipole, and the Madden-Julian Oscillation

This cruise will be dedicated to the recovery and re-deployment of RAMA Buoys in Bay of Bengal at 15N 90E, 12N 90E & 8N 90 E. The moorings are a part of the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA). This array is under development as part of a multi-national effort to provide data essential for monitoring, understanding, and predicting basin scale ocean-atmosphere variability such as the Asian monsoon, the Indian Ocean Dipole, and the Madden-Julian Oscillation Cruise Track

The primary objectives of the expedition were geophysical and geological research of the northern part of the Ninety East Ridge and hydrologic research of equatorial currents on the western part of the Indian Ocean. Hydrobiological, gas-geochemical and mercurimetric research were carried out as well.

This cruise, which forms a component of the IIOE-2 endorsed project EP-17, was conducted on board the Indian Research vessel ORV Sagar Kanya between 07 and 31 March 2017. It was aimed at retrieving and redeploying three OMNI (Ocean Moored buoy Network for Northern Indian Ocean) buoys and one CAL-VAL buoy in the Arabian Sea.