Vice-Admiral Valery Ryazantsev differed with the government's official conclusion. He cited inadequate training, poor maintenance, and incomplete inspections that caused the crew to mishandle the weapon.  During the examination of the wrecked sub, investigators recovered a partially burned copy of the safety instructions for loading HTP torpedoes, but the instructions were for a significantly different type of torpedo and failed to include essential steps for testing an air valve. The 7th Division, 1st Submarine Flotilla never inspected Kursk ' s crew's qualifications and readiness to fire HTP torpedoes.  Kursk ' s crew had no prior experience with HTP-powered torpedoes and had not been trained in handling or firing HTP-powered torpedoes. Due to their inexperience and lack of training, compounded by incomplete inspections and oversight, and because the Kursk ' s crew followed faulty instructions when loading the practice torpedo, Ryazantsev believes they set off a chain of events that led to the explosion.