Faturachman, D. and Nugroho, D. 2025. The Intricate Sea Borders of Batam (Indonesia), Tanah Merah (Singapore) and Johor Bahru (Malaysia) . International Journal of Marine Engineering Innovation and Research. 10, 4 (Dec. 2025), 1298–1301. DOI:https://doi.org/10.12962/j25481479.v10i4.