Marine pollution from ship-generated waste has become a significant environmental issue in global maritime operations. Ports, where ship-generated waste is collected, treated, and managed, are considered critical points, so having port waste management systems is a necessary measure to safeguard marine ecosystems. This research work deeply looks into the solid waste management practices at Haldia Dock Complex (HDC), a major maritime gateway of India. A mixed-method approach was adopted combining the collection of empirical survey data and doctrinal legal analysis. This paper looks into types of waste generated by ships, mechanisms of waste disposal and compliance with international treaties like MARPOL Annex V and national environmental legislations. The results of this paper show changes in waste generation patterns among different categories of ships and also new infrastructural and regulatory factors that affect the efficiency of waste management.