The remains of the Kursksubmarine has been delivered to a ship repair plant for dismantling.
Workers at the Nerpa ship repair plant in Snezhnogorsk will remove the submarine's two nuclear reactors and its cruise missiles and scrap what is left of the damaged hull.
Chemical experts will conduct a series of tests on the wreckage before the reactors are removed and military officials will conduct more experiments it.
Investigators spent several months studying the wreckage for clues as to what caused it to explode and sink during a training exercise in the Barents Sea in August 2000. All 118 people on board were killed.
The bulk of the Kurskwas raised in a costly international operation last year. Investigators have completed the investigation but have failed to reach a final conclusion.
The Russian navy says it plans to send divers this summer to retrieve fragments of the badly damaged bow, which remains on the sea floor, in the hopes that they will provide more information.