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Jurnal Bahari dan Teknologi (BARTEK)
Published by Politeknik Bumi Akpelni
ISSN : -     EISSN : 30897971     DOI : https://doi.org/10.6425/vp159s12
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Bahari dan Teknologi (BARTEK) merupakan jurnal pelayaran / jurnal maritim yang diperuntukkan untuk publikasi artikel hasil penelitian ataupun kajian ilmiah. Jurnal ini diperuntukkan untuk bidang ilmu NAUTIKA, TEKNIKA, Permesinan Kapal, Operasional Kapal, Kelistrikan, system kontrol. Terbit pada bulan Februari dan bulan Agustus setiap tahunnya. Semua publikasi pada jurnal ini bersifat akses terbuka yang memungkinkan artikel tersedia secara bebas online tanpa berlangganan apapun.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 39 Documents
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Pengaruh Kekedapan Ruang Muat dan Overheat Bucket Elevator terhadap Proses Discharging Urea di MV. Mochtar Prabu Mangkunegara Almer akbar Vayudha; Eni Wahyuni; Haryani Haryani
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/cp0qzw69

Abstract

This study aims to analyze the effect of cargo hold tightness and bucket elevator overheating on the urea discharging process aboard MV. Mochtar Prabu Mangkunegara. Maintaining cargo hold tightness and ensuring the optimal performance of the bucket elevator are essential to preserve cargo quality, improve operational efficiency, and prevent delays during unloading. This research employed a quantitative approach using a survey method. Primary data were collected through questionnaires distributed to 26 crew members involved in cargo handling operations, while secondary data were obtained from ship documents and relevant literature. The data were analyzed using validity and reliability tests, classical assumption tests, multiple linear regression, t-test, F-test, and the coefficient of determination (R²) with SPSS software. The results indicate that cargo hold tightness has a positive and significant effect on the urea discharging process. Likewise, bucket elevator overheating has a significant positive effect on unloading performance. Simultaneously, both variables significantly influence the effectiveness of the urea discharging process with a coefficient of determination (R²) of 67.7%, while the remaining 32.3% is explained by other factors outside the research model. These findings emphasize the importance of preventive maintenance and regular inspection to improve cargo handling performance and operational efficiency.
Analisis Overflow dan Overpressurized Tank terhadap Kegiatan Bongkar Muat di MT. Marina Aman Nevlin Diela Atmaja; B.L Hentri Widodo; Devy Kusumaningrum; Haryani Haryani; Erwin Sutantyo
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/hy64cg76

Abstract

The operations of cargo loading and unloading on chemical tankers have a high level of risk because they involve hazardous liquid cargo and complex technical systems. These conditions can cause operational disruptions if they are not supported by proper supervision, coordination, and optimal operation of the cargo system, one of which is the occurrence of overflow and overpressurized tank. This study aims to analyze the causes of overflow and overpressurized tank and their impacts on cargo loading and unloading activities on the chemical tanker MT. Marina Aman. This study used a qualitative approach with a descriptive case study method. Data were obtained through observation, interviews, and documentation studies. The results showed that the overflow occurred due to an abnormality in the Pump Remote Control Assembly of the 4S cargo tank pump, which caused the pump to operate without a command and resulted in cargo being transferred to the 2S tank without being noticed. This condition was worsened by the malfunction of the remote tank gauging system on the 2S tank and the failure to report an early indication in the form of an abnormal pump sound. Meanwhile, the overpressurized tank was caused by the less optimal performance of the Pressure/Vacuum (P/V) valve and pressure sensors, as well as delays in maintenance. These results show that the occurrence of overflow and overpressurized tank was not caused by a single factor, but was influenced by a combination of equipment conditions, monitoring systems, maintenance, and human factors. The impacts included disruption of cargo loading and unloading activities, damage to the tank structure, and operational losses for the company. Therefore, improvements in equipment maintenance, cargo system monitoring, and more effective communication and reporting are needed during cargo loading and unloading activities.  
Analisis Keandalan Pressure Transmitter dalam Mendeteksi Low Pressure Oil sebagai Pemicu Shutdown Generator di Kapal MV. Nameera Dimas Dwi Junanda; Eka Darmana; Priyanto Priyanto
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/aa3v7v57

Abstract

The protection system on the MV Nameera failed to trigger an alarm when the pressure dropped to the 0.25 MPa threshold, resulting in a blackout. This study aims to evaluate the reliability of the pressure transmitter in detecting low lubricating oil pressure conditions, identify factors influencing its accuracy and reliability, and explain the generator shutdown mechanism triggered by low lubricating oil pressure signals in the MV Nameera's diesel generator. A qualitative case study approach was employed. Data collection involved direct observation, interviews with engine department crew members, documentation review, and a literature study. Data analysis was conducted qualitatively—utilizing data reduction, data presentation, and conclusion drawing—to assess pressure transmitter reliability, performance-influencing factors, and the shutdown mechanism associated with low oil pressure. The results indicate that pressure transmitter reliability is influenced by the sensor's condition, the cleanliness of the lubricating oil pressure line, electrical installation issues, calibration accuracy, and the performance of the lubricating oil pump. When lubricating oil pressure falls below the established set point, the pressure transmitter sends a signal to the control system, prompting the protection system to execute the generator shutdown sequence. Consequently, routine inspections, preventive maintenance, and periodic calibration are essential to maintain measurement accuracy and enhance the reliability of the diesel generator's protection system.
Analisis Kerusakan Selenoid Acuator terhadap Pergerakan Steering Gear pada Kapal KMP DLN Nusantara Anggen Cahya Wira; Fajar Pujiyanto; Santhi Wilastari
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/w2agks62

Abstract

This study investigates the effect of solenoid actuator failure on the performance of the steering gear system of KMP DLN NUSANTARA. The steering gear system converts steering commands from the bridge into rudder movement, ensuring safe and accurate vessel maneuvering. Failure of the solenoid actuator disrupts hydraulic oil flow to the steering actuator, resulting in degraded steering performance. Qualitative descriptive method was employed. Data were collected through onboard observations, interviews with ship personnel, and documentation. The data were analyzed using the Miles and Huberman interactive model, including data reduction, data presentation, and conclusion drawing. The results reveal that solenoid actuator failure is mainly caused by oil seal wear, spring fatigue, internal mechanical resistance, unstable hydraulic pressure, elevated temperature and vibration, hydraulic oil contamination. These conditions reduce steering responsiveness, decrease rudder movement stability and steering angle accuracy, and restrict hydraulic fluid flow. Corrective actions include component disassembly, internal inspection, cleaning, replacement of worn parts, proper reassembly, and functional testing. Preventive measures involve periodic hydraulic oil inspection, scheduled preventive maintenance, and continuous monitoring of steering system operation. The study concludes that the condition of the oil seal, spring, and hydraulic oil significantly influences the reliability of the solenoid actuator and the overall performance of the steering gear system.
Analisis Keselamatan Kerja di Kamar Mesin Berbasis Fault Tree Analysis (FTA) dan Risk Priority Number (RPN) Puryadi Puryadi; Karjono Karjono; Evyana Diah Kusumawati
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/h2kbr014

Abstract

The engine room is the most critical area on a ship with a high potential for work accidents due to the complexity of machinery systems and hazardous working conditions. This study aims to identify and analyze occupational safety risks in the ship's engine room using Fault Tree Analysis (FTA) and Risk Priority Number (RPN). The research employs a quantitative descriptive approach with data collected through direct observation, interviews with crew members, and review of maintenance documents. FTA is applied to map system failures and identify root causes of accidents through a top-down deductive approach, while RPN is calculated based on Severity (S), Occurrence (O), and Detection (D) parameters to determine risk priority levels. The analysis results identify that failures in the lubrication system, cooling system, and fuel system constitute the primary risk factors, with the highest RPN value reaching 240, indicating a significant safety hazard. The FTA analysis reveals that human error, equipment failure, and inadequate maintenance procedures are the dominant root causes of potential accidents. Based on these findings, recommendations include routine maintenance of critical systems, periodic component inspections, safety training for crew, and implementation of automated detection systems. This research contributes to improving occupational safety in the engine room and supporting zero-accident operations in the maritime industry.
Analisis Kegagalan Fungsi Kerja Bowl Disc System terhadap Tindakan Flushing Purifier pada Proses Pembersihan Bahan Bakar MFO di Kapal MV. Hammada Firyal Fariz; Ali Khamdilah; Eko Nur Hidayat; M Aji Luhur Pambudi; Tuswan
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/q0azyq80

Abstract

The quality of Marine Fuel Oil (MFO) free from water and impurities is one of the primary factors in maintaining combustion efficiency and the reliability of the main engine's performance on board ships. One of the equipment playing an important role in maintaining this quality is the purifier, particularly through the flushing process utilizing the bowl disc component. However, functional failure of the bowl disc frequently causes a decline in the effectiveness of the flushing process, thereby risking a reduction in fuel quality and disrupting engine performance. This problem is commonly encountered on merchant vessels, including MV. Hammada, where suboptimal purifier maintenance directly affects the smoothness of ship operations. Based on this background, this study aims to analyze the functional failure of the Bowl Disc System on the effectiveness of the flushing purifier action in the MFO fuel cleaning process on board MV. Hammada. This research employs a descriptive qualitative method through direct observation, technical measurements (dial shaft and RPM), and interviews with the Engine Room Chief and Fourth Engineer. The results indicate that stable RPM (7,300–7,425 rpm) and appropriate sealing water pressure significantly influence the success of the separation process. It was also found that variations in purifier operating temperature (76–92°C) affect the resulting fuel quality, with the ideal temperature range being 85–95°C. Factors causing bowl disc functional failure include insufficient routine maintenance, poor fuel quality, and blockage in the sealing water line. Based on these findings, this study recommends increasing the frequency of visual inspections, conducting periodic shaft alignment measurements, and consistently controlling purifier operating parameters to keep the MFO separation process optimal and support the overall reliability of shipboard engine operations.
Kajian Pekerjaan Perbaikan Posisi Mesin Induk Kanan Kapal Patroli Hiu Macan Tutul 02 Akibat Misalignment Shaft Panut Widodo; Rudi Setiawan; Riyanto Wibowo
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/efv8pw12

Abstract

The patrol vessel of Hiu Macan Tutul 02 is own by the Ministry of Marine Affairs and Fisheries (KKP). During the 2026 dry-docking period, work was planned to adjust the position of the starboard main engine including Chockfast material because shaft misalignment identified during the previous 2023 dry-docking measurements. This work accounts for 8.43% of the 2026 docking project total cost. To ensure the work meets its right on target, an study is required to inform decisions regarding the continuation of this work. This necessitates re-checking and re-measuring the propulsion system's alignment. This study aimed to provide a basis for deciding whether to continue the adjust position of starboard main engine. A descriptive-comparative method was employed, utilizing quantitative data on bearing clearance, shaft alignment, V-bracket and stern tube alignment, and shaft deflection. A comparison of the 2023 and 2026 data revealed that alignment measurements involving the front shaft bearing more accurate and better results, as well as shaft deflection remained within normal limits following the replacement of the starboard shaft's forward bearing. Based on these findings, plan for adjustment work the starboard main engine position can be cancelled, so this work cost can be reallocated to other work.
Analisis Kerusakan Valve Inlet dan Outlet pada Diesel Generator No. 3 di MV. Golden Rejeki Roby Fitriansyah; Mursidi Mursidi; Dyah Agustin Widhiyanti
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/d69w1w09

Abstract

Damage to inlet and outlet valves can disturb the combustion process and reduce the reliability of a ship's diesel generator. This study aimed to analyze the causes of inlet and outlet valve damage on Diesel Generator No. 3 aboard MV. Golden Rejeki, identify its effects on engine performance, and describe the corrective actions carried out. The study used a descriptive qualitative approach. Data were obtained through direct observation during sea practice, interviews with engine-room personnel, and documentation of inspection and repair activities. The data were analyzed through systematic organization, reduction, presentation, and conclusion drawing. The findings showed carbon deposits and wear on the inlet valve, while the outlet valve had a burned surface and a cracked spindle. The valve seat also showed an uneven contact surface and leakage. The damage was associated with high operating temperature, carbon deposits, component wear, and less-than-optimal periodic inspection. Its effects included increased exhaust-gas temperature to 460°C, reduced compression, unstable engine operation, increased vibration, and declining generator output. Repairs consisted of cylinder-head overhaul, component replacement, carbon cleaning, valve grinding/lapping, leakage testing, and valve-clearance adjustment. After repair, the generator operated stably and its monitored parameters returned to normal.
Analisis Tidak Sempurnanya Pengabutan Injektor pada Mesin Induk No 1 di TB Nisrina Riski Samudera Reda Pradana; Mursidi Mursidi; Rodlitul Awwalin
JURNAL BARTEK Vol 2 No 2 (2026): Jurnal Bahari dan Teknologi [BARTEK]
Publisher : Politeknik Bumi Akpelni Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6425/4c6z6549

Abstract

Uncomplete fuel atomization in the No. 1 main engine injector of TB Nisrina Riski Samudera VII was associated with reduced engine performance, elevated exhaust gas temperature, black smoke, and abnormal engine vibration during operation. This study aimed to identify the causes of incomplete injector atomization, describe its effects on main-engine performance, and determine corrective actions. A descriptive qualitative approach was applied during the sea-practice period on board the vessel. Data were obtained through direct observation, interviews with engine-room crew, documentation, and review of ship and engine references. The findings showed three dominant technical conditions: carbon deposits partially blocked the nozzle holes, injector-spring elasticity decreased so that opening pressure fell below the specified value, and the injector needle became dirty and stuck. The injector test recorded about 28 MPa (290 kg/cm²), whereas the manual-book value used in the study was 34 MPa (350 kg/cm²). The incomplete spray pattern contributed to incomplete combustion, exhaust-gas temperature of 550–600 °C, black smoke, unstable combustion, and a reduction of engine speed to around 1200 rpm under high towing load. Cleaning the nozzle and needle, replacing the weakened spring, periodically replacing the fuel filter, cleaning the fuel tank, and retesting injector pressure restored the spray pattern to normal at 34 MPa.

Page 4 of 4 | Total Record : 39

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