Hydrantula, a Singapore-based company, is set to introduce a groundbreaking modular approach to coastal protection during the Singapore International Water Week 2026. This innovative method, which assembles most of the structure on land before completing it at sea, promises to significantly reduce both construction time and costs.
The new system utilises lightweight permanent formwork made from standard HDPE pipes, connected by moulded plastic nodes. Approximately 90% of the construction occurs onshore, after which the frame is positioned at sea and filled with reinforced concrete. This approach not only accelerates the building process but also cuts costs to about a third of traditional methods. Additionally, the lifecycle carbon footprint is estimated at 5 tonnes of CO2 per metre over 60 years, compared to 25 tonnes for conventional structures.
Hydrantula’s design also aims to support marine life. The open frame allows wave energy to pass through and encourages the colonisation of marine organisms, effectively turning the structure into an artificial reef. This aligns with Singapore’s research into hybrid coastal solutions that integrate natural and man-made elements.
Despite its potential, the technology is still in early commercial stages, with ongoing pilot discussions in Southeast Asia and California. Hydrantula is also collaborating with Singaporean academic partners to further test its structural and ecological performance. The company will showcase its system at SIWW 2026, held from 15 to 18 June at the Sands Expo and Convention Centre.
