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
26 September 2025
IMO Submission: Consistent treatment of wind propulsion in the IMO Net-Zero Framework – ISWG-GHG 20/2/17
ISWG-GHG 20-2-17 - Consistent treatment of wind propulsion in the IMO Net-Zero Framework (IWSA) (2) Submitted by IWSA (05 September 2025) DEVELOPMENT OF NEW AND/OR...
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31 July 2025
IWSA joins INTERCARGO as Associate Member
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
770
Number of large ships with wind propulsion technology installed
4.482.7290
Tonnage of wind-powered cargo carrying capacity
170.1750
Tons of CO2 saved
Upcoming Events
Event Date: 17 September 2025
Wind Propulsion Seminar – LISW 2025
Event Date: 17-18 February 2026
Fifth Wind Propulsion Conference 2026
Event Date: 15 September 2025
The Marine Energy Transition Forum 2025
Event Date: 18 September 2025
