To resolve the problem regarding the anxiety about inadequacy of armor protection in the already heavily armored KV-1 Model 1941, It was decided to bring the armor security associated with the turret around a depth to 75mm. Because the convenience of creating such a thick armor dish ended up being lacking at that time, so an interim solution was to utilize bolt on armor, 25 mm of depth, bolt right to the exterior associated with the turret and some other parts associated with the hull. This type ended up being frequently referred to as KV-1s Ehkranami.