LR validates performance modelling for SunRui suction sail technology
Independent verification helps ensure that the methodologies used to assess these technologies are robust, transparent and aligned with recognised industry standards. Lloyd’s Register (LR) has completed an independent verification and assessment of computational fluid dynamics (CFD) analysis for SunRui’s suction sail technology. Announced at SMM 2026 in Hamburg, the verification reflects a…
Lloyd’s Register (LR) has independently verified the computational fluid dynamics (CFD) analysis of SunRui’s suction sail technology, confirming its adherence to industry standards and validating its potential benefits. The assessment, presented at SMM 2026 in Hamburg, focused on the aerodynamic performance and wind load calculations of SunRui’s 6m x 26m suction sail.
The verification process adhered to recognized guidelines such as LR’s Guidance Notes on Wind Assisted Propulsion Systems, IACS Recommendation 173, and ITTC CFD procedures. LR found the CFD analysis to be in line with satisfactory standards, concluding that the proposed analysis could be accepted. The study reported a maximum thrust of 260kN for a single sail and up to 700kN combined for three sails in a ship-sail configuration, showcasing the potential of wind-assisted propulsion technologies in enhancing vessel efficiency.
Rob Tustin, LR’s North Asia New Construction Manager, emphasized the importance of independent verification in building trust in performance predictions and investment decisions. SunRui welcomed the verification, stating it provided assurance that their analysis met internationally recognized standards, reinforcing confidence in the technology and its application for energy-saving solutions.
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