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Dredging contractors may be local, regional, national or international companies. They may be privately owned corporations, family-owned enterprises or government-owned organisations or a combination of these.

Smaller, more straightforward projects are often carried out by local and regional contractors with very specific types of equipment suited to their regions.

Large projects, such as land reclamation, canal and port development, and offshore energy projects, usually involve the major international contractors, from Europe and Asia, which have large and varied vessels and state-of-the-art equipment, which give them better capacity to tackle these challenges. Almost all large maritime infrastructure contracts, which are most often proposed by government and port authorities, require competitive bidding through strictly regulated tenders.