In the 1920s, the Bremen-based shipping company DDG Hansa saw a growing demand of shipments for assembled locomotives to British India. That led to the construction of the world's first heavy lift vessel, SS Lichtenfels with a 120 t (118 long tons; 132 short tons) derrick.[1] After World War II, DDG Hansa became the world's largest heavy lift shipping company. In terms of lifting capacity it reached its peak in 1978 with refitting the Japanese built bulk carrier MV Trifels with two 320 t (315 long tons; 353 short tons) Stülcken derricks. Shortly after that, in 1980, DDG went bankrupt. With that, only the Dutch shipping companies Jumbo and BigLift Shipping (until 2001 named Mammoet Shipping) were left as heavy lift shipping specialists.