Improved Rotation MechanismIRM
The equipment that speeds up hull and turret traverse and softens the dispersion penalty for turning.
Also known as IRM, rotation mechanism.
It does two things at once: the vehicle turns faster, and turning costs less accuracy. On a heavy tank being circled, that combination is survival rather than convenience.
It is the usual alternative to a stabiliser on vehicles whose problem is not moving but turning.
Related terms
Hull traverseHow fast a vehicle turns on the spot, in degrees per second, which decides whether it can keep its front toward a faster opponent.Turret traverseHow fast the turret rotates, in degrees per second, independent of the ground the vehicle is standing on.BloomThe widening of the aiming circle caused by moving, traversing or firing, and the reason a gun's paper accuracy is rarely what a player experiences.EquipmentPermanent upgrades fitted into a vehicle's three slots, each improving one area of its performance.