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All Journal International Journal of Science and Environment
Agus Prawoto
Surabaya Maritime Polytechnic Applied Undergraduate Study Program Ship Machinery Engineering Technology, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics

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The Influence of The Chief Engineer's Leadership Style on The Performance of Crew Members in The Engine Room Agraprana Rafasya; Monika Retno Gunarti; Elly Kusumawati; Shofa Dai Robbi; Agus Prawoto
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.439

Abstract

Human resource management in ship engine rooms faces challenges such as low productivity and high turnover due to the ineffective leadership style of the chief engineer. This study aims to analyze the influence of the chief engineer's leadership style on the performance of crew members (ABK) in the engine room. Using a quantitative explanatory approach with a descriptive survey design, the population includes all crew members in the engine room of the marine practice ship Polytechnic of Shipping Surabaya, with a sample of 35 respondents through purposive sampling. The Likert scale questionnaire instrument (1-5) was analyzed using SPSS for descriptive statistics, validity/reliability tests, simple linear regression, t-test, and R². The results showed a significant positive effect (t-count 5.370 > t-table 2.034; sig. 0.000), with R² 0.450 which means leadership explains 45% of the performance variation. The conclusion states that chief engineers need to implement proactive leadership to improve shipping efficiency and safety.
Design and Construction of an Arduino-Based Main Engine Overheating Detection Prototype Mohamad Faris Setiyawan; Agus Prawoto; Dyah Ratnaningsih; Monika Retno Gunarti; Shofa Dai Robbi
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.451

Abstract

Overheating in the ship's main engine, often caused by suboptimal cooling and lubrication systems, poses a high risk to performance and safety. This study aims to design and build an Arduino-based detector prototype. Using a research and development (R&D) method with an experimental approach, the population of b diesel at the Surabaya Maritime Polytechnic, a purposive sample of one Mitsubishi S6B3-MPTA unit. Instruments include Arduino Uno, thermocouple and SW200D sensors, LCD, buzzer, and Wemos D1 Mini integrated with Blynk; quantitative descriptive data analysis through Arduino IDE, comparing readings with a thermogun and connectivity tests. The results show high accuracy of temperature detection (dynamic trend 30.75-34°C), vibration (2-7 mm/s), and IoT range up to 185 m non-obstacle. In conclusion, the prototype effectively provides real-time warnings, improving preventive maintenance.
Co-Authors Agraprana Rafasya Dyah Ratnaningsih Elly Kusumawati Mohamad Faris Setiyawan Monika Retno Gunarti Monika Retno Gunarti Shofa Dai Robbi