Simanjuntak, M. 2025. Optimization of the Financial Services Authority (OJK) as a Regulator and Supervisor of Insurance Related to the Issuance of Shipping Insurance Policy Guarantee Regulations to Support Indonesia’s Economic Development. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE). 8, 2 (May 2025), 5413-5425. DOI:https://doi.org/10.31538/iijse.v8i2.6035.