In total, six Karl-class guns were manufactured. These guns had the names Adam, Eva (1st Batt.), Thor, Odin (2nd Batt.), Loki, and Ziu.
The Mörser Karl had a range of 6,800 m at best. To extend the range, a gun barrel of 54 cm calibre and 7.1 m in length was manufactured. Three Karls were equipped with it instead of the 60 cm calibre gun to become the 54 cm Mörser, designated Gerät 041, with a longer range of 10,400 m. The ammunition for these monster guns weighed about 2 tons apiece depending on the specific ammunition type. Due to its huge size and concomitant difficulty of use, its effect on the outcome of the war was probably minimal, but it undoubtedly had a marked psychological impact on those at the receiving end of its shells.
Here are 2 pics, the first two are of Thor(left photo and center) of 2ed Battalion. (I dont know which one is in the third photo though it might be Thor as well).
