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deme

One of the world’s largest marine construction companies

From its core activities, dredging and civil works on water, the DEME group has developed complementary 'offshore' activities in renewable energy, oil and gas, and soil and sludge remediation, and the extraction of aggregates and minerals.

Included in the investment portfolio since 1876
(Ackermans & van Haaren > Dredging International > DEME)

62.12 %

Beneficial interest AvH
Largest marine construction

Key financial highlights


4,155

million
Turnover 2025

346

million
Net result 2025

7,591

million
Order backlog 2025

5,922

headcount
Employees 2025

Press releases from the segment

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Marine Engineering & Contracting

DEME - GSR signs MoU with Japanese DORD to conduct joint demonstration test in the Clarion-Clipperton zone

Marine Engineering & Contracting

DEME celebrates the naming of its next-generation wind turbine installation vessel, Norse Wind

Marine Engineering & Contracting

DEME concludes contract for Port of Paranaguá Access Channel concession in Brazil