Tambunan, M.A.A., Jamiah, Y., Siregar, N., Rif’at, M. and Hartoyo, A. 2023. Integrating Marine Problems as Suplementary for Trigonometry Topic in Nautical Fishing Vessel Program. Edumatika : Jurnal Riset Pendidikan Matematika. 6, 1 (Jun. 2023). DOI:https://doi.org/10.32939/ejrpm.v6i1.1735.