Glavny starshina

Glavny starshina (Гла́вный старшина́) is a rank used by the Russian Navy and a number of former communist states. The rank is the second most senior rank in the non-commissioned officer's career group. The rank is equivalent to senior sergeant in armies and air forces. Within NATO forces, the rank is rated as OR-7 and is equivalent to chief petty officer in English speaking navies.

Russia
The rank was introduced to the Soviet Navy in 1940.

In the navy of the Russian Federation there are four ranks in the petty officer's career group, which means:
 * Glavny starshina of the ship
 * Glavny starshina
 * Starshina 1st stage
 * Starshina 2nd stage