The first Rodriguez Cruise started on 14 January 1984 from Colombo and ended at Reunion Island on 16 February 1984. The second cruise left Reunion Island on 3 April 1984 and was completed in Singapore on 7 May 1984. The program included a detailed Seabeam, gravimetric and magnetic survey of the Rodriguez Triple Junction over an area of 7,200 km super(2) and similar surveys of an axial segment of each of the 3 associated spreading ridges. The 2 cruises together total 27,000 km of profiles. The scientific objectives of the Rodriguez cruises based upon detailed bathymetric, gravimetric and magnetic mapping of the surveyed areas are summarized.