Iie Suwondo (2026) “Speed-Based Fuel Consumption and Efficiency Potential of the Pioneer Passenger Ship KM. Bung Tomo on Route R-16: An Analysis of Engine-Room Log-Book Data”, Journal of Creative Power and Ambition (JCPA), 4(02), pp. 3940–3949. doi: 10.70610/jcpa.2209.