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.

1945

Clearing wrecks and rebuilding Walcheren

As the war came to an end in 1945, the founders were involved in a dangerous but vital task: clearing the hazardous remnants of conflict and rebuilding devastated coastal infrastructure. In newly liberated Vlissingen (the Netherlands), the harbor was a treacherous zone full of wartime debris. Between May and June 1945, the crews undertook the delicate operation of clearing the harbor bed down to a depth of six meters, safely removing blocked shipwrecks, heavy barrage nets, and torpedoes.

With the waters cleared, attention turned to the massive humanitarian and engineering crisis on the flooded island of Walcheren, whose dikes had been shattered by Allied bombings the previous year. From June to August 1945, the founders leased seven vessels to the Dutch Department of Public Works, working tirelessly to repair the broken dikes and help the region begin its long journey of reconstruction.

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.