# Ice Class

The Ice Class page provides a comprehensive overview of the supported Ice Classes linked to their respective Classification Societies.

Furthermore, the Ice Class module enables the configuration of rebates for [EU ETS](/voyage-management-system/step-by-step-guides/master-data/eu-ets-compliance.md) compliance. This means that if a vessel belongs to one of the Ice Classes that have rebates set up, the total EU ETS cost will be reduced by the rebate percentage. In other words, the EU ETS cost will be 100% minus the rebate percentage.

<figure><img src="/files/mEGWA5e7gpNMggppj2Xa" alt=""><figcaption><p>Ice Class module</p></figcaption></figure>

The screenshot depicts the IAS2 Ice Class and associated rebates. If the Voyage's [vessel](/voyage-management-system/step-by-step-guides/voyages/maintain-voyages/overview/vessel.md) has an Ice Class, the rebate percentage is subtracted from the [EU ETS cost](/voyage-management-system/step-by-step-guides/voyages/maintain-voyages/overview/profit-loss-summary.md). &#x20;


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