Dredging & hydraulic engineering

Dredger Boskalis

Dredging is perhaps the best-known type of hydraulic engineering, but there are many other types of work carried out in this sector – which is essentially a branch of civil engineering. Activities include land reclamation, construction and maintenance of ports, coastal defence and riverbank protection, services for the offshore oil, gas and renewable energy sectors, and environmental works.

Most of the companies are small and/or midsized firms that operate on a national level. Only a dozen or so large hydraulic engineering companies are active on a truly European or global scale. The Netherlands is particularly strong in this sector.

The many vessel types used in hydraulic engineering include trailing-suction hopper dredgers, cutter-suction dredgers, backhoes, floating grab cranes, pontoons and floating sheerlegs. Onboard, the personnel most likely to be Nautilus members are shipmasters, chief engineers and other deck and engineering officers. Sometimes a vessel’s ratings are also members if Nautilus has a ‘single union’ agreement with the company.

Collective bargaining agreements

Nautilus has collective bargaining (recognition) agreements (CBAs) with several companies in this sector, and in the Netherlands Nautilus has a CBA (CAO Waterbouw) which covers the entire Dutch sector. For company-specific bulletins and other documents for members, please log in to the Members area. There is more about how collective bargaining works on the We organise and We negotiate pages.

  • Boskalis Westminster
  • Cemex Marine
  • Hanson
  • Jumbo Crew Services
  • Tideway

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