ISWG-GHG 21-INF.2 - Work programme developed to confirm robustness and reliability of methods proposed for calculating wind propulsion in the attained GFI calculation This document has been submitted by IWSA for the Intersessional Working Group held in April 2026, ahead of the MEPC 84 session. This document presents the work programme developed by wind propulsion experts to further refine, update and validate the robustness and reliability of the methods proposed in documents MEPC 82/7/9, MEPC 83/7/33 and MEPC 83/INF.33 by IWSA. These methods quantify the share of energy provided by the direct use of wind propulsion technologies onboard vessels, with the purpose of integrating these methods into the calculation of the GHG Fuel Intensity (GFI). Its purpose is to keep the maritime community and Member States updated on the current maturity of these methods and on the progress on delivering available case studies in order to reaffirm and demonstrate the efficacy of these methods. ISWG-GHG 21-INF.2 - Work programme developed to confirm robustness and reliability of methods proposed for cal... (IWSA)
12 January 2024
This document presents the IWSA wind propulsion white paper compiled in the light of the recently adopted 2023 IMO strategy on reduction of GHG emissions from ships and the work underway on mid-term measures. The white paper delivers a detailed baseline assessment of wind propulsion technology (WPT) systems and outlines pathways underway for the dissemination and scaling of this technology segment. The content builds on the summary document MEPC 79/INF.21 (Comoros et al.) giving additional technology and policy context and a detailed macro and micro economic analysis of the benefits of following a wind-hybrid decarbonization pathway. These are supplemented by an updated market analysis and case studies covering numerous wind propulsion solutions. The report also delivers results from an IWSA initiated survey of industry stakeholder perspectives relating to wind propulsion uptake along with a detailed summary of barriers and drivers in the industry which help to inform the regulatory gap analysis and recommendations for further action. Submitted by Comoros, France, Solomon Islands and IWSA
31 January 2025
This document contains in the annex the "proposed assessment methodology tiers to measure wind propulsion in the attained GFI" as referred to in document MEPC 83/7/33 (IWSA).
This document provides a set of assessment methodologies for wind propulsion installation energy contributions so that wind energy can be incorporated into the mid-term measures developed to implement the 2023 IMO Strategy on reduction of GHG emissions from ships, with reference to the technical measures currently being prepared. This set of tiered methodologies support the proposed amended formula outlined in document MEPC 82/7/9 (IWSA) which in turn is based on the work presented in document ISWG-GHG 16/2/7 (Austria et al.). This proposed tiered approach to the application of these methodologies enables a level of flexibility without compromising accuracy enabling iterative improvements and optimization of these approaches as further knowledge and data feedback into the system framework. The Annex to this paper is published separately as MEPC 83/INF.33 Proposed assessment methodology tiers to measure wind propulsion in the GFI
Sea trials for assessing the power saving from wind assisted propulsion The purpose of this procedure is to provide a short-term method for verification of the power saving due to a Wind Propulsion Technology (WPT) installation. The minimum test program can be conducted within one day and includes around 5 wind conditions. The scope can be extended to include a larger number of conditions, and be conducted over a longer period of time during operation.
7 October 2022
This document considers several areas relevant to the characterization of the current state of technology and development of Wind Propulsion Technologies (WPTs) for ships. The role of such technologies is presented in the wider context of decarbonization in shipping enabling the sector to go 'beyond compliance' and future-proof ships. In addition to technological aspects, the document includes references to several projects highlighted as case studies. Market forecasts, policy/regulatory development, technical studies and standardization/class developments are also included as part of a developing framework where wind propulsion takes shape as a technically reliable and mature technology option Submitted to MEPC 79 at International Maritime Organisation (IMO) by IWSA in partnership with Finland, France, Saudi Arabia, Solomon Islands, Spain, Union of Comoros, and Royal Institution of Naval Architects (RINA),
