 Due to lengthening of the hull's nose section, the driver's position was lower, with his optics attached to the roof of the hull, unlike in the T-64 and its derivatives.This remedied a notorious weak spot of the T-64 design - the section between the turret and the hull.The same solution made it possible to arrange armouring at more rational angles of inclination as a countermeasure to modern sub-caliber armour-piercing rounds.