The Donau­dampf­schiffahrts­elektrizitäten­haupt­betriebs­werk­bau­unter­beamten­gesellschaft was a supposed suborganization of the Donau­dampf­schiffahrts­gesellschaft, a shipping company based in Vienna that transported passengers and cargo on the Danube before World War I. The DDSG still exists today in the form of the now-private companies DDSG-Blue Danube Schifffahrt GmbH and the DDSG-Cargo GmbH. Wikipedia