Anemoi Marine Technologies Ltd (Anemoi) and Lloyd’s Register (LR) have published a new paper encouraging closer alignment between existing methodologies used to verify the performance of wind-assisted propulsion systems (WAPS). The research highlights how complementary frameworks can be brought together to strengthen consistency, transparency and industry confidence.
The paper builds on LR’s earlier verification of Anemoi’s new in-service performance and forecasting model calibration methodology, designed specifically for WAPS. The new research assesses how that method fits alongside two existing frameworks: the International Towing Tank Conference’s (ITTC) guidelines for sea trials and supporting performance prediction and DNV’s recommended practice for in-service testing.
Currently WAPS users and providers are applying a range of different approaches to performance analysis, making it difficult to compare results like-for-like and build a robust business case for decision makers to commit to WAPS installation on their vessels.
The analysis shows that the three methodologies are complementary. While ITTC guidelines provide a short-term verification of predictions under controlled conditions and DNV’s recommended practice offers long-term in-service assessment, Anemoi’s verification method provides the bridge between in-service measurements and actionable fuel-saving predictions. (....)