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All Journal International Journal of Marine Engineering Innovation and Research
Ariyudha Lusiandri
Department of Ship Machinery Engineering Technology, Politeknik Pelayaran, Surabaya, 60155, Indonesia
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Analysis of Jacket Cooling Cracks on Main Engine Performance Reduction Ariyudha Lusiandri; Muhammad Alfarizi Diniantara; Sri Mulyanto Herlambang; Agus Dwi Santoso
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 3 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i3

Abstract

This study analyzes the performance reduction of a ship's main propulsion engine caused by cracks in the jacket cooling system. Efficient engine cooling is vital for maritime transport safety and operational efficiency, yet systems often face critical technical failures. Utilizing a qualitative descriptive case study design aboard the bulk carrier MV Sarah S, research data was gathered through observation, semi-structured interviews with engine officers, and logbook documentation. The results reveal an abnormal operating condition in cylinder No. 2, where coolant leakage through material hairline cracks led to a critical drop in jacket cooling pressure (from 3.5–4 bar down to 2–2.5 bar) and a significant surge in exhaust gas temperature to 590°C. Triangulation analysis identified poor cooling water quality (pH below the 8–10 standard) as the dominant root cause accelerating corrosion, material fatigue, and structural cracking. Consequently, heat dissipation failed, disrupting combustion and lowering engine efficiency. This study concludes that temporary corrective measures are insufficient. Sustained propulsion efficiency requires immediate structural repairs combined with rigorous water treatment management and strict adherence to the Planned Maintenance System (PMS).
Co-Authors Agus Dwi Santoso Muhammad Alfarizi Diniantara Sri Mulyanto Herlambang