NATO targets are a series of standard armoured targets defined by NATO designed to test the armour penetration of weapons. The purpose of the triple heavy target is to represent the difficulty a projectile would face in penetrating the skirt, roadwheel, and hull of a Soviet tank.[1]
They are defined as:
| Target type | Angle of target | First plate thickness | First plate hardness | First air gap | Second plate thickness | Second plate hardness | Second air gap | Third plate thickness | Third plate hardness | |
|---|---|---|---|---|---|---|---|---|---|---|
| Single medium | 60° | 130 mm | ||||||||
| Single heavy | 60° | 150 mm | 260-300 kp/mm2 | |||||||
| Double medium | 60° | 40 mm | 150 mm | 90 mm | ||||||
| Double heavy | 60° | 40 mm | 308-353 kp/mm2 | 150 mm | 110 mm | 260-300 kp/mm2 | ||||
| Triple medium | 65° | 10 mm | 330 mm | 25 mm | 330 mm | 60 mm | ||||
| Triple heavy | 65° | 10 mm | 412-438 kp/mm2 | 330 mm | 25 mm | 100-122 kp/mm2 | 330 mm | 80 mm | 308-353 kp/mm2 |