Pratama Simanjuntak, Wira Adhitya, Muhammad Sapril Siregar, and Sabaruddin Sabaruddin. “Pengoperasian Global Positioning System Pada Kapal MT. Noni T Saat Berlayar Di Perairan Kupang”. Jurnal Pendidikan Tambusai 7, no. 1 (April 16, 2023): 1731–1737. Accessed January 29, 2025. http://jptam.org/index.php/jptam/article/view/6057.