Vice-Admiral Valery Ryazantsev drew Motion attention to systemic faults in the Russian Navy , such as the risky use Using of highly volatile HTP torpedoes known Know to have caused Causation the sinking Motion_directional of .

Ryazantsev accused Judgment_communication the Russian navy of failing to properly train Education_teaching the crew , who did not appear to have properly closed the inner torpedo room safety door designed to protect Defending the rest of the submarine .