On 15 July 2026 Econowind received a Type Approval Design Certificate (TADC) from classification society DNV for its VentoFoil 3-Series boundary layer suction wing.
The certification confirms compliance with DNV’s ST-0511 standard for Wind-Assisted Propulsion Systems and enables easierintegration of VentoFoils on DNV-classed vessels worldwide. The approval accelerates the deploymentof wind propulsion across the shipping industry.
“DNV is one of the world’s leading classification societies. This TADCgivesDNV-classed shipowners confidence that VentoFoils meet the highest industry standards,” Said Chiel de Leeuw, Chief Commercial Officer at Econowind.
“It simplifies the approval process for both retrofits and newbuilds. VentoFoils are ideal for late-stage design integration and retrofit projects. This is an important milestone for Econowind and for the wider adoption of wind-assisted ship propulsion.”
The 3-Series VentoFoil is Econowind’s best-selling suction wing to date, with over 150 units sold. The system actively harnesseswind power to generate forward thrust, helping to reduce fuel consumption and mitigate FuelEU penalties.
The system includes a tilting foundation, allowing the wings to be tilted down during port operations or in adverse weather conditions, making it a flexible solution.
The TADC applies to the 16m VentoFoil 3-Series product designand supports easy integration into DNV-classed vessels without repeating the full design assessment process.
This enables shipowners, shipyards, and project teams to move more efficiently from concept to installation, reducing project complexity and accelerating deployment.
Econowind expects the DNV Type Approval Design Certificate to accelerate adoption of the VentoFoil, particularly among shipowners seeking proven, independently certified technology that can support fuel savings, emissions reductions, and decarbonization goals.
MS Heinz of HS Schiffahrt is among the first vessels to sail under this TADC.
