Zwagerman International provides lifting equipment and management for the offshore industry, ports and construction companies. It offers a variety of cranes, ranging from telescopic crawler cranes to floating marine cranes, specializing on water-related vertical transport. The company owns various worldwide patents for machines tailor-made for heavy-lifting. It has frequently participated in effort to construct crane barges, pipelines and shipwreck salvage.
Customers of Zwagerman International include contractors and offshore construction companies. They either rent or buy the machines and utilize them around the globe. The firm was established in 1956, focussing on excavation and earth moving works. Twenty year later it switched focus to marine vertical transport.