This paper analyzes the exhaust systems of two-stroke slow-speed diesel engines used in the maritime industry. Special emphasis is placed on examining the efficiency of exhaust gas cleaning systems, known as scrubbers, to reduce emissions of harmful substances such as sulfur oxides (SOx), nitrogen oxides (NOx), and particulate matter (PM). The introductory section describes the fundamental systems that enable ship functionality, while the central part focuses on the technical characteristics of two-stroke slow-speed diesel engines and their environmental impact. Special attention is given to different types of scrubbers (wet, dry, and electrostatic precipitators), their operating principles, and the regulatory requirements set by the International Maritime Organization (IMO 2020). The paper also includes numerical pressure calculations in a wet scrubber system and an analysis of the economic aspects of its application, including a comparison of fuel costs and return on investment. Environmental challenges and technical limitations of scrubber systems are critically analyzed, as well as potential innovations such as carbon capture and storage (CCS) and the application of advanced materials and digitalization in filtration systems. In conclusion, the paper highlights the importance of optimizing exhaust systems in the maritime industry to reduce environmental impact and comply with international regulations while ensuring the economic viability of shipping operations.