[2] After graduating from a school in St Petersburg in 1878, he was trained as an engineer in the Kronstadt naval base, and served as an officer on the Black Sea Fleet.

On 2 March 1883, he was arrested, after the police spy, Sergey Degayev had named him as a member of the military wing of Narodnaya Volya, and held in the Peter and Paul Fortress.

In court, he denied that he had ever been a member of any revolutionary organisation, and in his memoirs he claimed that he had never met nor had any kind of contact with the main defendant Vera Figner, nor with Aleksandr Butsevich, a lieutenant, a leader of the group to which Yuvachov was accused of belonging.

[1] Vera Figner, who was also a prisoner in the fortress, wrote that: Shortly after his arrival in Schlusselburg, he lapsed into an abnormal state of religious frenzy.

[4]"Rejecting an offer to be released to a monastery, Yuvachev served eight additional years of hard labor on Sakhalin island, where he was placed in charge of a weather station.