Dahlan, H. R., R. W. . Saputra, and M. Aziz. “IMPACT ANALYSIS ON IMPLEMENTATION OF ONBOARD TRAINING MONITORING BASED ON MOBILE APPLICATION ”. Jurnal Maritim Malahayati, vol. 3, no. 2, July 2022, pp. 51-56, doi:10.70799/jumma.v3i2.39.