GT Wings introduces RINA-approved performance assessment tool for Jet Sail wind propulsion

GT Wings has introduced a holistic ship performance assessment tool to support early-stage evaluation of its AirWingTM wind-assisted propulsion system. The tool, developed by independent wind assist experts Blue Wasp Marine and based on its proprietary Pelican SuiteTM web-based platform, will enable GT Wings to develop and submit reliable and structured indications of potential fuel, emissions, and regulatory savings.

RINA’s review and verification confirm that the modelling methodology and performance assessment framework of the Pelican SuiteTM tool are aligned with recognised industry standards and guidelines. This Approval in Principle provides confidence that the approach is suitable for early-stage evaluation of wind-assisted propulsion solutions, offering shipowners a reliable basis for preliminary technical and commercial assessments.

GT Wings has developed AirWingTM, a Jet Sail wind propulsion system using controlled suction and blowing to achieve high aerodynamic performance with a minimal deck footprint. As wind-assisted propulsion adoption accelerates, shipowners are increasingly seeking reliable early-stage insights to inform both technical and commercial decisions.

GT Wings’ Jet Sail system has already been installed onboard Carisbrooke Shipping’s MV Vectis Progress, with additional orders from Grieg Maritime Group, and the company has completed more than 80 early-stage performance assessments to date. This new tool builds on that experience, enabling more consistent and transparent initial evaluations.

The assessment tool enables rapid, route-based simulations to estimate potential fuel, emissions and regulatory savings across different vessel types, operating profiles, and AirWingTM configurations.

Using a four-degrees-of-freedom (4DOF) modelling approach, the tool provides a consistent, physics-based indication of performance. This allows shipowners to compare options and build an early business case with greater confidence.

Blue Wasp Marine provides physics-based maritime performance modelling and simulation tools that are applied across a range of wind-assisted propulsion technologies. Its Pelican SuiteTM software enables consistent, technology-neutral assessment of aerodynamic and hydrodynamic performance.

To further strengthen confidence in the methodology, the modelling approach and outputs were verified in line with industry practices by RINA, supporting alignment with recognised standards such as MEPC circ.896 and the ITTC Guidelines for Wind Powered Ships (2024), providing an additional layer of assurance for shipowners.

By combining GT Wings’ project experience with independent modelling and a clear verification pathway, the tool provides a neutral and credible view of performance potential.

Patrizio Di Francesco, Special Projects North Europe Business Development Manager at RINA, commented: “As a member of the International Windship Association, RINA is pleased to collaborate with GT Wings in addressing the challenges related to wind propulsion performance prediction, leveraging its newly developed Rules for Wind Assisted Propulsion Systems and granting an Approval in Principle to support a robust and reliable assessment framework.”

The performance assessment tool is now available to GT Wings clients.