Heavy-lift ship
derrick. 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 ton
s; 353 short ton
s) Stülcken derricks. Shortly after that, in 1980, DDG went bankrupt. With that, only the Dutch shipping companies Jumbo, BigLift Shipping (until 2001 named Mammoet Shipping) and SAL Heavy lift were left as heavy lift shipping specialists.