Hydrographic data were collected from the research ship ‘A.A. Siderenko’ in the Bay of Bengal in [(81.70 degrees E, 82.90 degrees E) x (15.75 degrees N, 16.20 degrees N)] grid at 9 selected stations, in between stn. Nos Ref. 03 to 65, to explore the possibility of occurrence of gas hydrates. The main source of data were using CTD observations in the Bay of Bengal upto near bottom during the period 22 December, 2002 to 26 January 2003. The physical and chemical parameters are temperature, salinity, dissolved oxygen and depth and also fluorescence. Contour maps of these parameters were prepared at depths 50 m, 100 m, 200 m, 811 m and at sea bed (or upto maximum depth of observation) to study their variability using surfer ver. 6.01 software. In the present technical report the hydrographic CTD profile diagrams and the derived contour maps are presented and described for the study area which are useful for gas hydrates exploration.