The agency said a Norwegian-built remote-controlled submersible would be used and the work "would be demanding" as the submarine "lies deep" at about 1,700 meters (5,610 feet). Norway found elevated concentrations of the radioactive substance cesium-137 around the wreck in the period 1991-1993 but said the levels were barely detectable and presented no danger. But there are no traces of such leaks around the submarine after that.
Hilde Elise Heldal of the Norwegian Institute of Marine Research said that monitoring the pollution around the submarine was "important" and would "help to ensure consumer confidence in the Norwegian fish industry."
The Komsomolets was based at the Kola Peninsula near Norway's border.