The American Bureau of Shipping (ABS) has published the ABS Guide to Wind-Assisted Propulsion System Installation, providing class safety standards when installing wind-assisted systems.
The guide is applicable to two prominent wind-assisted propulsion technologies: Flettner rotors and wing sails, including both rigid and soft sails.
The guide covers structures, machinery, stability, navigational safety, manoeuvrability, fire safety, emergency systems, materials, and non-destructive testing. It also introduces the notations Wind-Assisted in respect of vessel safety and Wind-Assisted+, which additionally addresses the safety of the system and machinery.
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