This paper presents a case study of the information sharing practices in a buyer–supplier relationship of companies that deliver products to the global maritime industry. The main research question is whether improving the quality of shared information between buyer and supplier will enhance information utilization by the supplier and improve the operational efficiency of both companies. The case study describes the process of analyzing the information flows between the buyer and the supplier and the utilization of the shared information by the supplier. Our main focus was on analyzing information quality and information utilization, and finding solutions to improve the information sharing practices between the two companies.