During the Second World State, they organized an arms race and created new combat vehicles. But not all of them were successful and applicable in battle.
In 139, the British government ordered a new, well-armored “heavy” cruising tank to be made. It was assumed that he would easily break through the defenses of the enemy.
Engineers called the car “Covenanter”. It got its name in honor of the Scottish religious faction. It was assumed that he would be fast and maneuverable, but the designers made him in a hurry, so the tank did not participate in any battle. There was not a single doubt about the ability of the machine, so it was allowed into production even before the tests.
In order to make the management of the tank easier, its height was reduced. Because of this, there is almost no space for other components inside. For example, the air filters were located on the roof: they had to be protected with special units, and a box with spare parts and tools was stored on the fencing shelves. This means that in order to repair a tank, one person from the crew would have to crawl out behind the toolbox. In battle, this was unacceptable.
Also, the tank had problems with cooling the internal compartments. Because of the tight space, the radiator had to be placed in the bow, so the crew was very hot. Such innovation excluded its use in most hot countries.
The British released 1771 such a tank and none of them took part in the fighting because of a strong flaw. As a result, he found use as a training machine, and later “Covenantry” helped to lay bridges.