Introduction Images of 150 years DEME, ending with a view on hashtag #DEME150.

Discover 150 years of DEME!

In 2026, DEME celebrates 150 years of marine and environmental engineering. From our early roots in 1876, we have grown from our origins in dredging and marine works into a leading, diversified group - shaped by expertise, innovation, resilience and a constant drive to push boundaries. 

Throughout this anniversary year, we’ll take you on a journey through our history, sharing stories and moments that show how challenges were approached, solutions were developed and ambitions kept moving forward. Across our channels and on this dedicated anniversary website, you can discover the people, projects and breakthroughs that made DEME what it is today. This website will be updated weekly with new stories. Throughout the year, we will use #DEME150 to share and connect these stories. 

As we reflect on 150 years, we continue to look ahead with the same spirit that defines us: We Care. We Dare. We Deliver.

1925

Opening a new overseas chapter in Africa

By the early 1920s, our founders continued to be considered a reliable partner in major infrastructure works. Thanks to sustained participation in tenders in Belgium, often in close cooperation with French contractors, the company consistently demonstrated its technical expertise, strengthened partnerships, and contributed to large and complex port projects.

These collaborations proved decisive when large scale public works restarted in the French colonies after the end of the First World War. Rather than entering Africa independently, our founders initially positioned themselves within French-led consortia and took on a specialist role that matched their expertise in dredging and hydraulic engineering.

Those efforts led to a first contract in Africa in 1925, when the company was engaged as a subcontractor for port works in Algiers. This marked the company’s first executed hydraulic engineering project in Africa, and it proved to be a carefully chosen step beyond Europe, building on the partnerships, experience, and trust developed in the preceding years.

Disclaimer

With 150 years of history, there are countless moments to tell. In this anniversary year, we share a non-exhaustive selection of stories that illustrate how DEME became the company it is today. These stories are drawn from a variety of historical sources, including books by authors such as Dirk Podevijn and Mon Vanderosteyne, company publications and the input of colleagues across the organization. As this website looks back on 150 years of heritage, it features archival material from different eras. Safety standards and working practices have evolved significantly over time and should be understood in their historical context.