Powering global seaborne trade with abundant direct wind energy.
The International Windship Association (IWSA) is the trade association for wind power in shipping.
Find out more about the AssociationLatest News
1 June 2026
Wind-powered cargo ships sail past the 100-vessel milestone
Congratulations to all of the International Windship Association (IWSA) members and the wider wind propulsion community. The latest installations of wind propulsion technology on large...
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20 May 2026
Posidonia 2026 Wind Route
Why Wind?
Wind Propulsion Technology
is Mature and Proven
- Propulsion not Energy Efficiency
- Wind-Assist & Primary Mover
- Retrofits = 5-20% Propulsive Energy
- Optimised Wind-Assist = up to 30%
- Primary Wind New Builds = 50%++
- Retractable, Automated, Certified
The Economics of
Wind Make Sense
- Energy Cost Fixed at Zero
- Technology Available Today
- Applicable Across the Fleet
- Robust Pipeline of Tech & Projects
- Operational Changes Boost Wind
- Predictable: Weather Routing/Forecast
It’s a Renewable
Energy Source
- Abundant Energy Supply
- Available Worldwide Today Zero Emissions Energy
- Delivered at No Cost
- Delivered Directly to Point-of-Use
- No New Infrastructure Required
1020
Number of large ships with wind propulsion technology installed
5.709.3320
Tonnage of wind-powered cargo carrying capacity
203.7610
Tons of CO2 saved
Upcoming Events
Event Date: 01/06/2026
Wind Propulsion @ Posidonia 2026
Event Date: 04/06/2026
Confidence Is Not Intelligence Why Shipping Still Destroys Value Despite...
Event Date: 22 - 23 June, 2026
7th Decarbonizing Shipping Forum
Event Date: 7-10 April 2026
