The Dortmund–Ems Canal is a long canal in Germany between the inland port of the city of Dortmund () and the seaport of Emden. The artificial southern part of the canal ends after at Herbrum lock near Meppen. The route then takes the river Ems for to Oldersum lock. From there, the canal continues along a second artificial segment of . This latter section was built because inland ships at the time of the construction of the canal were not built for the open sea, which they would have faced at the Dollart and the entry to the sea port of Emden. It is connected to the Ems-Jade Canal from Emden to Wilhelmshaven. History The canal was opened in to reduce demand on the railway network, which could not cope with the transport of products from the Ruhr area. Also, the canal was supposed to make coal from the Ruhr area more competitive compared to imported English coal. Furthermore, the steel industry in the eastern Ruhr area needed to import ore from abroad. The canal was attacked numerous times during World War II due to its strategic importance. Operation Garlic, an attack in September 1943 by 617 Squadron RAF (the "Dambusters") was unsuccessful and costly. The squadron attacked it again in September 1944 using Tallboy "earthquake" bombs breaching it and causing considerable damage. It was repaired after the conflict. Description The best known building of the Dortmund-Ems canal is the Henrichenburg boat lift in Waltrop, which enabled a ship to bridge a difference in height of . It operated until 1962, and was then replaced by a new elevator and a lock. Today it houses the Westfälisches Industriemuseum. Some kilometres to the north, the canal reaches the city of Datteln, which lies at the crossroads of four canals: Datteln-Hamm Canal Wesel-Datteln Canal Dortmund–Ems Canal Rhein-Herne Canal The old route of the canal crosses the rivers Lippe, Stever and Ems on bridges. These bridges are built with large arches, and the bridge over the Lippe lies above the river. After the Second World War, the canal had to be widened. Those parts that were above ground level could not easily be widened, and therefore a new route was constructed between Olfen and Münster. It lies parallel to the old route, and new river crossings were also built. The old route was closed for shipping. is a 350 km long official long-distance