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Raising, Ratnawati
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Pengaruh Perawatan Rutin terhadap Efisiensi Bahan Bakar Mesin Induk KL. Sultan Hasanuddin 02 Jamaluddin, Jamaluddin; Rahmat Hidayat; Rahman, Muh. Syuaib; Raising, Ratnawati
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 5 (2025): Oktober 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i5.6497

Abstract

Fuel efficiency is a critical indicator in ship operations and maritime education, particularly within the context of sustainability. This study addresses the issue of increasing fuel consumption and exhaust gas emissions caused by suboptimal engine maintenance practices. The objective of this research is to analyze the impact of routine maintenance on the fuel efficiency of the main engine aboard the training vessel KL. Sultan Hasanuddin 02. A quasi-experimental method was employed, involving field observations, technical measurements using a flowmeter and gas analyzer, and interviews with the Chief Engineer. Data were collected before and after the implementation of maintenance procedures based on the Planning Maintenance System (PMS). The results showed a 12.5% improvement in fuel efficiency, along with reductions in CO₂ emissions by 16.4%, NOx by 19.2%, and SOx by 18.8%. These findings demonstrate that routine maintenance not only enhances energy efficiency but also mitigates the environmental impact of the ship's propulsion system. Key supporting factors include technician competence, operational conditions of the vessel, and the quality of fuel used. This research provides both practical and academic contributions to the development of data-driven main engine maintenance guidelines, which are relevant to vocational maritime education and efforts to improve energy efficiency in the shipping sector.
Analisis Optimasi Manajemen Termal dan Efisiensi Konsumsi Bahan Bakar pada Transportasi Muatan Asphalt 60/70: Studi Kasus MT LG Asphalt 2 Rahman Raising; Rusnaedi, Rusnaedi; Raising, Ratnawati; Sudarman, Sudarman
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.7161

Abstract

This study analyses the operational strategy for controlling the temperature of asphalt 60/70 cargo on the asphalt tanker MT LG Asphalt 2 during an eight-day voyage from Sungai Udang (Melaka) to Anggrek (Gorontalo Utara). Temperature control is critical to maintain cargo pumpability, product quality, energy efficiency, and operational safety. The research adopts a single case study with a descriptive–quantitative approach. Cargo temperature data were collected every 24 hours and combined with boiler operation records to formulate four basic heating actions (no heating, one boiler, two boilers 24 h, two boilers 48 h). These actions were then arranged into eleven heating strategies for an eight-day voyage. For each strategy, the final average cargo temperature and total fuel consumption (LSMGO/LSMFO) were calculated and compared with the voyage instruction requirement of 135–140 °C at discharge. The results show that no heating causes a temperature drop of about 3 °C/day, whereas continuous operation of two boilers is energy intensive. Among the eleven models, Strategy No. 11 (A–0–C–A–C–0–A–A) is the most optimal, achieving a final temperature of about 140 °C with moderate fuel use. The study recommends an intermittent, data-driven heating pattern as a practical basis for standard operating procedures on asphalt tankers.
Co-Authors Jamaluddin Jamaluddin Rahman Raising Rahman, Muh. Syuaib Rahmat Hidayat Rusnaedi, Rusnaedi Sudarman Sudarman