The Argentine Navy published images showing the remains of the San Juan, including the propeller of the submarine. He is separate from the submarine. The Office posted footage taken at the bottom of the ocean on its official Twitter page.. In late October, the security services discovered two objects in the area where the San Juan disappeared.. As recalled by the TV channel "360", the submarine that participated in the exercise left the port of Ushuaia in early November 2017.. On the second day, the crew stopped communicating. Hydroacoustic complexes detected a powerful explosion. Probably the cause of the tragedy was an error in the battery charge. Onboard were 44 people..