This consultancy intends to support the decarbonization of the maritime sector in Türkiye by laying the groundwork for the country to foster and produce low-/zero-carbon bunker fuels for ships. To achieve this; the assignment will conduct studies to explore investment opportunities in green fuel and devise strategies to incorporate low-/zero-carbon fuels into ships and port infrastructure; promoting sustainability in the maritime industry. The activities of this assignment focus on two main areas:*Fuels: A scoping and baseline study will be conducted to identify investment opportunities and assess the potential for low-/zero-carbon energy production in Türkiye; specifically in the production of bunker fuels.* Ports: The assignment also includes an assessment of how low-/zero-carbon fuels can be integrated into shipping fleets and port infrastructure in Türkiye. Additionally; the resilience of existing port infrastructure and its logistical connections with road and rail will be evaluated.Ultimately; the objective is to strengthen Türkiye's capacity to decarbonize the shipping industry; promote green and sustainable ports; and facilitate stakeholder engagement to explore various low-/zero-carbon fuel opportunities in the country's maritime transport sector.