The physical meaning of the term "strontium unit," which was used in the No
rthern and Pacific-Ocean fleets of the Soviets Union in the 1970s-1980. It
is shown that the strontium unit is the analog of a biological hazard index
. Estimates are made of the real activity of the wastes dumped in the Kara
Sea and in the bays of Novaya Zemyla in 1964-1991 on the basis of the data
on the typical radionuclide composition of solid radioactive wastes. 1 figu
re, 3 references.