During cruise 81 of the R/V Akademik Mstislav Keldysh comprehensive studies of the Kara Sea were carried out over sill separating the central spur of the St. Anna Trough and the Novaya Zemlya depression. For the first time, the water exchange parameters between the shelf southwestern and deep northern parts of the Kara Sea have been evaluated. The meridional component of the geostrophic current velocity calculated from CTD data was used to identify both the northern and southern jets reaching the bottom. Two southern streams are responsible for water transfer from the deep-water part of the Kara Sea to the shelf zone. In the eastern part of the transect, transfer of river-runoff-freshened waters to the deep-water area of the Kara Sea was noted.