Sergey Yeliseyev

Sergei Stanislavovich Yeliseyev (, ; born 24 October 1961 ) is a Vice Admiral, former First Deputy Commander and acting commander-in-chief of the Ukrainian Navy who defected to Russia in 2014 during Russian annexation of Crimea.

Early career He graduated from a Soviet naval school in Kaliningrad in 1983 and previously served with the Russian Pacific Fleet of the Soviet Navy.

Career with Ukraine In 1993, Yeliseyev joined the newly formed Ukrainian Navy and in 1999–2001 he was the commander of the Ropucha-class landing ship U402 Kostyantyn Olshansky.

In 2004, he graduated from the National Defense Academy of Ukraine.

In 2010, he was appointed the First Deputy Commander of the Ukrainian Navy and later on promoted to Vice-admiral.

Career with Russian Navy Since July 2014, he has served as a Deputy Commander of the Russian Baltic Fleet and retained his rank of Vice-admiral in the Russian Navy.

Yeliseyev was the only senior officer in the command of the Baltic Fleet who retained his post after the dismissal of the then Baltic fleet commander Vice-admiral Viktor Kravchuk in June 2016 and the subsequent removal of more officers from the headquarters of the fleet for failure to comply to rules and regulations.