In addition to its nuclear reactor's core material, the submarine was carrying two nuclear torpedoes. Concern over the potential effects of the high-energy nuclear material on the rich fishing areas in which it lay prompted an effort to locate the sub's wreckage and ascertain its condition.
Due to the presence of nuclear materials in the submarine's reactor core and its torpedoes, there was worry about their impact on the surrounding fishing areas.  Efforts were made to locate the wreckage and assess its condition.