The role of the maritime industry in reducing greenhouse gas (GHG) emissions to mitigate the effects of global warming is significant. The International Maritime Organization (IMO) has set a specific target for the industry, but the challenge is to implement emission-reducing technologies at scale. The use of fossil fuels is still dominant in the shipping sector, also due to the significant barriers that hinder the full adoption of carbon-neutral alternative fuels. The transition to a low-carbon economy presents an opportunity for the industry to lead the way towards a sustainable innovation and demonstrate a commitment to reducing its environmental impact. In this context, Carbon Capture System (CCS) technologies have been identified as a promising solution, but their implementation on ships comes with its own set of challenges. In this paper, the authors aims at exploring the technical requirements and consequences of the installation of a CCS based on the use of Calcium Hydroxide (Ca(OH)₂) onboard a container ship. To validate their assumptions, the authors set up a simulation tool able to evaluate the potential reduction in Carbon Dioxide (CO₂) emissions from the ship along a selected route. On the basis of the tool outcomes, the authors were able to provide a comprehensive analysis of the proposed system’s costs and benefits, emphasizing the considerable savings that could be attained through the implementation of this technology on board cargo ships with a specific consideration to the future implementation of carbon emission taxes and a focus on the European Union Emission Trading System (EU ETS) regulation. The findings of this research offer valuable perspectives on creating more effective and environmentally friendly approaches to mitigate GHG in the maritime sector.