1. Introduction In 2004, the MARPOL Annex VI Regulations for the Prevention of Air Pollution from Ships were agreed upon and adopted. Regulation 14 of the annex established a stepwise reduction of permissible SOx emissions. As of 1 January 2020, the global sulphur cap will be 0.5%, while the previously adopted limit of 0.1% in Emission Control Areas (ECAs) will remain in force. Complying with Regulation 14 will have a tremendous impact on the maritime industry. Vessels will need to reduce their SOx emissions, and there are multiple strategies owners and managers can choose to achieve the necessary reduction. Some of these strategies impact the so-called steam balance of a vessel’s steam plant. This document aims to provide information about how the use of various compliant fuel oils impacts the steam balance. It also offers recommendations on how to best manage excess or insufficient steam production. In addition, the document contains an overview of Alfa Laval Aalborg solutions for optimizing a vessel’s steam plant operation. Alfa Laval technical paper 3
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