In Germany, the Russians took care the German submarine equipment.
According to Bild, cited by TASS, the cooperation between Germany and the Russian company Transas started in 2005. Then, under Chancellor Gerhard Schroeder, around 100 ships of the German Navy were equipped with navigation systems produced by a Russian company.
Later, Germany turned to Transas again and installed the Navi-Sailor 4000 system on the German submarines U 35 (in service since 2015) and U 36.
A spokesman for the German Defense Ministry, responding to a newspaper question as to whether the Transas systems pose a danger to German submarines, replied that “the government is making significant efforts to ensure the security of cyber and cryptographic computer assets operated by the Ministry of Defense. “.