The specialty of the organisation is the development of unique machines for demanding works. Most of these machines have received worldwide patents. Furthermore waterrelated activities combined with vertical transport have formed the basis of the present company.Zwagerman has also successfully participated in the building of several crane-barges, pipelines and the salvage and clearing of shipwrecks. Today, many Spacelift cranes of the company are rented or sold to different contractors, for example, in offshore projects, maintenance and service work for oil platforms.