Currently, the website of the Environmental Ship Index, abbreviated as ESI, is being revised. (https://www.environmentalshipindex.org/). One of the adjustments is the possibility of adding an ESI-noise score. It is expected that the update of the website on noise will be completed by the end of October. As shown on the ESI website, the Port of Hamburg has adopted the NEPTUNES labeling system. Ships with an ESI noise score of 40 points receive a 3% discount. For more information, click here.
The Port of Helsinki already introduced a discount for less noisy vessels some years ago. However, this is not according to the NEPTUNES methodology; more information about this discount can be found here.