Methodology for the Reduction of Shipping Vessel Emissions Through the use of an Ultrasonic Antifouling System 

The proposed methodology applies to projects that install or improve ultrasonic antifouling systems on various ships, including those used for shipping and transport, recreation (i.e., cruise ships), and aquaculture (i.e., well-boats). The ultrasonic antifouling system eliminates the occurrence of biofouling on ship surfaces and reduces the hydrodynamic resistance of ships, thereby reducing energy requirements and emissions.

The concept note was rejected by Verra, as per Section 3.2.5(3) of the VCS Methodology Development and Review Process, 4.2 (PDF). The decision was primarily based on potential unmitigable environmental risks associated with the proposal.