This article compares CO₂ emissions, fuel consumption, and fuel costs between diesel and hybrid propulsion systems in suction hopper dredgers. The study analyzes two ships of the same type with similar technical characteristics but different propulsion systems: one with a standard diesel engine and the other with a hybrid system. The goal is to determine how much lower CO₂ emissions, fuel consumption, and fuel costs can be achieved with hybrid propulsion compared to diesel. The study uses real data from 2023 to calculate and compare the emissions, fuel consumption, and costs of both ships. The results show that hybrid propulsion systems significantly reduce CO₂ emissions and fuel costs compared to diesel systems. Hybrid propulsion systems are more efficient, have lower emissions, and can reduce fuel consumption by up to 70-74% in certain scenarios. The study also highlights the importance of reducing greenhouse gas emissions in the maritime industry and the need for sustainable and efficient propulsion technologies. The findings suggest that hybrid propulsion systems are a promising solution for reducing the environmental impact of shipping. The study concludes that hybrid propulsion systems are more efficient and environmentally friendly than diesel systems, and that they can contribute to the decarbonization of the maritime industry.This article compares CO₂ emissions, fuel consumption, and fuel costs between diesel and hybrid propulsion systems in suction hopper dredgers. The study analyzes two ships of the same type with similar technical characteristics but different propulsion systems: one with a standard diesel engine and the other with a hybrid system. The goal is to determine how much lower CO₂ emissions, fuel consumption, and fuel costs can be achieved with hybrid propulsion compared to diesel. The study uses real data from 2023 to calculate and compare the emissions, fuel consumption, and costs of both ships. The results show that hybrid propulsion systems significantly reduce CO₂ emissions and fuel costs compared to diesel systems. Hybrid propulsion systems are more efficient, have lower emissions, and can reduce fuel consumption by up to 70-74% in certain scenarios. The study also highlights the importance of reducing greenhouse gas emissions in the maritime industry and the need for sustainable and efficient propulsion technologies. The findings suggest that hybrid propulsion systems are a promising solution for reducing the environmental impact of shipping. The study concludes that hybrid propulsion systems are more efficient and environmentally friendly than diesel systems, and that they can contribute to the decarbonization of the maritime industry.