
Coastal protection in Singapore: from Afsluitdijk blocks to eco-urban solutions
Singapore is low-lying, densely populated and short of space. So when the city-state protects itself against rising seas, a seawall can never be just a seawall. What does flood protection look like when there is no room for single-purpose infrastructure? Professor Adrian Law, Executive Director of the Coastal Protection and Flood Resilience Institute (CFI) Singapore and professor at the Department of Civil and Environmental Engineering, National University of Singapore, explains how Singapore organised its response: a S$125 million research programme, launched in 2023, that connects university research, applied research with industry and living labs in the field. He also explains why he prefers to speak of eco-urban solutions, and how the planned Long Island would combine coastal defence with a new freshwater reservoir. Zi Qian Yang, Managing Director of Delta Marine Consultants Singapore, follows a Dutch concrete armour unit from the Afsluitdijk to Singapore. After winning PUB’s Global Innovation Challenge in 2021, DMC adapted the XblocPlus to Singapore’s much milder wave climate. And because the blocks are placed in a regular pattern, drones and machine learning can spot when a single block has shifted. What does that mean for the age-old practice of inspecting seawalls by hand? Adrian also shows how drone imagery helps sharpen satellite images of sediment transport. And Zi Qian shares the key lesson from years of research: academia, industry and policymakers need to tackle the problem together. Recorded at Waterbouwdag 2026, themed Hydraulic Engineering in a Global Perspective.



