Results of five years of operation with deep manned submersibles "MIR-1" and "MIR-2" on nuclear submarine "Komsomolets" wreck

Beginning from 1989 the annual scientific research and underwater technical operations were conducted with the "MIR-1" and "MIR-2" submersibles on the "Komsomolets" nuclear powered submarine wreck. A wide range of oceanological research from r/v "Akademik Mstislav Keldysh" is performed every year. During five expeditions much data is accumulated. The most important results of the above mentioned research are introduced in the present paper. In the second part of the paper the procedures and results of underwater technical works on the "Komsomolets" wreck with the "MIRs" are presented. Mainly these are the operations with the purposes to decrease the potential leakage of the radiation from the nuclear reactor and nuclear weapons.