According to the press service of the Navy, shooting practice sessions and the teamwork within such sessions are a part of the combat training. The main feature of the upgrade is the opportunity to use the sighting instruments, which let the gunners hit the heavily armored targets while they move - even in the night time, in the smoke or under unsuitable weather conditions.
The 100 mm MT-12 anti-tank cannon, a.k.a. Rapira is the Soviet-made cannon, created in the 1960s. It is used against heavily armored vehicles and other moving targets. Such cannons are currently used by both Ukraine and Russia in the armed hostilities in Donbas.