Roman Catholic Diocese of Passau Lorch, a Roman station and an important stronghold at the junction of the Enns River and the Danube, Christianity found a foothold in the third century, during a period of Roman domination, and a Bishop of Lorch certainly existed in the fourth. During the great migrations, Christianity on the Danube was completely rooted out, and the Celtic and Roman population was annihilated or enslaved. In the region between the Lech River and the Enns, the wandering Bajuvari were converted to Christianity in the seventh century, while the Avari, to the east, remained pagan. The ecclesiastical organization of Bavaria was brought
Enns-class river monitor driving one shaft, using steam generated by two Yarrow boilers driving. The engines were rated at and were designed to reach a top speed of . They carried of fuel oil. The main armament of the "Enns"-class river monitors was a pair of /L45 guns in a single turret forward of the conning tower and three /L10 howitzers to the rear, in individual armored cupolas. They also mounted two individual /L50 BAG anti-aircraft guns, and six machine guns. The maximum range of her Škoda L/45 guns was . Her armour consisted of belt and bulkheads thick, deck armour thick, and