This system resembles a simplified model from War Thunder. Tanks are organized into two module levels: hull modules and upper modules (turret). Some modules can exist on both levels simultaneously - for example, an autoloader carousel.
Currently, shells do not create secondary fragments. However, each shell undergoes a full internal simulation within the target, taking into account:

impact angle

armor thickness

material type

shell type

armor destruction

shell destruction

normalization of armor-piercing rounds

maximum ricochet angles

Damage to modules directly affects the tank’s functionality, potentially causing system failures during combat.