Publication Search

This study was conducted based on the crucial role of diesel generator engines as the primary source of electrical power on board ships, making their operational reliability essential. One of the factors influencing generator engine performance is lubricating oil temperature. Excessive lubricating oil temperature may reduce lubrication effectiveness, increase friction between moving components, and lower engine efficiency. Therefore, this research aimed to identify the causes of high lubricating oil temperature in diesel generator engines and determine appropriate corrective actions. The study employed a descriptive quantitative approach. Data were collected through direct observation, interviews, and documentation during sea practice aboard MV. CL FLANDERS from 4 July 2024 to 5 July 2025. The data were analyzed using simple linear regression to examine the relationship between generator load and lubricating oil temperature. The findings revealed that generator load had a significant effect on the increase in lubricating oil temperature. Under normal operating conditions, the lubricating oil temperature ranged from 60°C to 72°C, while under abnormal conditions it increased to between 68°C and 81°C. The abnormal rise in temperature was mainly caused by cooling system problems, particularly a dirty LO cooler, scale deposits on the sea water pump impeller, and blockage in the cooling capillary pipes. The regression equation under normal conditions was Y = 45 + 0.30X, whereas under abnormal conditions it was Y = 53.5 + 0.30X. Elevated lubricating oil temperature resulted in lower oil viscosity, higher fuel consumption, and reduced diesel generator engine performance. Therefore, regular maintenance of the LO cooler, sea water pump, and continuous temperature monitoring are necessary to maintain optimum engine performance.

 The quality of digital system services in the ship clearance process is closely related to the work effectiveness of shipping agency companies. The advancement of port operational services is influenced by the system’s ability to provide convenience, speed, accuracy, and service integration for users. The system used in the ship clearance process must be able to meet user needs and support inter-agency coordination so that ship services can operate more effectively and efficiently. This study aims to analyze the performance level and the level of user importance regarding the implementation of the Single Submission Pengangkut System in the ship clearance process at PT Trans Cakrawala Perkasa. The research employed a descriptive quantitative approach with a sample of 30 respondents consisting of ship agents involved in the clearance process. Data were collected through questionnaires, observations, and literature studies. The data were analyzed using validity tests, reliability tests, conformity level analysis, and the Importance Performance Analysis (IPA) method. The results indicate that the SSM Pengangkut System has made a positive contribution to accelerating document processing, facilitating system usage, increasing work productivity, and supporting coordination among related agencies. Based on the IPA Cartesian diagram, one indicator was identified as a priority for improvement, while other indicators were categorized as maintain performance, low priority, and high performance with lower importance levels. Overall, the implementation of the Single Submission Pengangkut System has been running quite well; however, continuous evaluation and improvement are still needed to optimize the ship clearance process further.

Puja Semadi and Shalat Istikharah are common religious practices. Puja Semadi is performed by Buddhists, while Shalat Istikharah is performed by Muslims. Both are done to ask for guidance from God. However, a few people do not understand correctly how to do it and as a result some people experience confusion and still doubt in obtaining the desired guidance. This research aims to find out how Puja Semadi in the lokapala fiber, and how the meaning of shalat istikharah as a request for guidance. This research uses qualitative methods and in-depth interviews with religious experts who understand shalat istikharah. Data were collected through text analysis and interviews, and analyzed using qualitative analysis with its procedures. The data on Puja Semadi was taken from the transliteration of ancient manuscripts. Initially, the Javanese script was transliterated into Latin and then translated into Indonesian. Based on the results of the research, Puja Semadi in the lokapala fiber is done through meditation in a place called pemujaan. While shakat istikharah is done anytime and anywhere as long as the place is clean and pure. The results of this study can help readers to understand how the explanation of Puja Semadi and Shalat Istikharah.

Puja Semadi and Shalat Istikharah are common religious practices. Puja Semadi is performed by Buddhists, while Shalat Istikharah is performed by Muslims. Both are done to ask for guidance from God. However, a few people do not understand correctly how to do it and as a result some people experience confusion and still doubt in obtaining the desired guidance. This research aims to find out how Puja Semadi in the lokapala fiber, and how the meaning of shalat istikharah as a request for guidance. This research uses qualitative methods and in-depth interviews with religious experts who understand shalat istikharah. Data were collected through text analysis and interviews, and analyzed using qualitative analysis with its procedures. The data on Puja Semadi was taken from the transliteration of ancient manuscripts. Initially, the Javanese script was transliterated into Latin and then translated into Indonesian. Based on the results of the research, Puja Semadi in the lokapala fiber is done through meditation in a place called pemujaan. While shakat istikharah is done anytime and anywhere as long as the place is clean and pure. The results of this study can help readers to understand how the explanation of Puja Semadi and Shalat Istikharah.

Generators are one of the important auxiliary aircraft needed on ships for power generation. During the operation of a diesel generator, continuous rotation occurs resulting in friction and erosion of the moving parts. The supporting factor for the smooth running of a diesel engine is a lubrication system that is supported by good lubricating oil quality, besides that it also needs to be supported by an adequate and good cooling system. The use of lubricants is one of the most important factors to ensure the performance of diesel engines. The lubricant is in charge of maintaining the condition of the engine so that it remains stable. This study aims to analyze the effect of using lubricating oil beyond the operating hours limit on engine heat. Furthermore, it also discusses steps to ensure diesel engine temperatures remain normal. This research was carried out during the practice of sailing on a ship for approximately one year. This study uses a descriptive quantitative research method. The primary data obtained directly utilizes observation methods, and documentation. Secondary data was obtained from existing articles and journals. The data analysis techniques used are descriptive analysis and inferential analysis. The results of this study show that the working hours of lubricating oil use have a significant influence on the increase in the temperature of diesel generator engines as evidenced by hypothesis tests on two engine units, namely AE1 and AE2. In the AE1 unit, a t-value of 18.467 with a significance of 0.000 was obtained, while in AE2 the t-value was 14.289 with a significance of 0.000. The significance value in both units is less than 0.05 so it can be concluded that the working hours of lubricated oil have a significant influence on the temperature of the genarato diesel engine on the ship.

The steering gear is a vital component in ship operations, functioning to control the ship’s direction accurately. The reliability of this system highly depends on the performance of the hydraulic system, where the mechanical seal plays a key role in maintaining system pressure and preventing oil leakage. This study aims to identify the main factors causing mechanical seal damage and analyze its impact on the performance efficiency of the steering gear AHTS Logindo Stamina. Qualitative data were obtained through participatory observation and in-depth interviews with the second engineer. Meanwhile, quantitative data were gathered by measuring technical parameters such as oil pressure, operating temperature, and rudder movement time, which were then compared with SOLAS standards. This damage results in oil leakage through the mechanical seal gap, abnormal noise in the hydraulic system, and a significant decrease in working pressure of -25,86%. The operational impacts include the occurrence of steering gear failure alarms, decreased hydraulic efficiency of 25.87%, and the risk of system failure that could endanger ship maneuverability. This study recommends preventive maintenance through oil quality monitoring, environmental condition control in the steering gear room, and periodic mechanical seal replacement in accordance with operational standards to maintaining optimal steering system performance.

This research analyzes the Indonesian government’s policy responses to combating Illegal, Unreported, and Unregulated (IUU) Fishing in the Arafura Sea during 2023-2024, focusing on the case of the Run Zeng 03 and Run Zeng 05 vessels. These foreign-flagged vessels, owned by a Chinese company but registered under the Russian flag, were involved in illegal fishing and human rights violations against Indonesian fishery crew members. Using a qualitative descriptive approach supported by literature studies and official government data, this research analyzes how Indonesia implemented its maritime sovereignty through legal enforcement, inter-agency coordination, and international maritime diplomacy. The findings reveal that Indonesia’s measures, such as vessel monitoring AIS/VMS technology, law enforcement through arrests and seizures, and diplomatic engagement with flag states reflect a progressive but still reactive approach. The study identifies key challenges, including limited foreign authorities. This research highlights the need for an integrated policy framework that combines hard power (law enforcement and patrols) with soft power (international cooperation, economic diplomacy, and labor protection). The study concludes that a comprehensive and collaborative approach is essential to strengthen maritime governance and ensure sustainable, equitable management of Indonesia’s marine resources.

This study examines the role of agents in the renewal process of cargo ship construction safety certificates at the Merak Banten Harbormaster and Port Authority Office (KSOP), using a case study of PT. Vinici Samudera Agencies, Merak Branch. The study aimed to determine the role of agency companies in assisting shipowners in fulfilling certification obligations and to examine certificate renewal procedures in accordance with legal provisions and shipping safety standards. The research methods employed included a field approach through direct observation, interviews, and a literature review of relevant literature, regulations, and official documents. Based on the research findings, PT. Vinici Samudera Agencies plays a significant role in processing shipping administrative documents, coordinating with the KSOP, ensuring compliance with applicable legal provisions, and providing technical guidance to ensure ships remain seaworthy. The agency's role has been proven to increase time efficiency, reduce the risk of delays, and provide legal certainty in the certificate renewal process. Therefore, the presence of ship agents is a strategic factor in supporting the smooth operation of cargo ships at the Port of Merak.

This study analyzes the impact of fixed asset revaluation on corporate income tax liabilities in the domestic shipping sector. The background of this research is based on the importance of accurate fixed asset valuation in tax calculations, particularly for assets subject to value fluctuations, such as ships. The objective of this study is to identify the difference between the book value and the revalued value of ship fixed assets, and to analyze its implications for tax liabilities. This research uses a quantitative approach with descriptive analysis methods, utilizing secondary data from the financial statements of PT. ABC as a case study. The Wilcoxon signed-rank test was used to test the significant difference between the book value and the revalued value of assets. The results show a significant difference between the book value and the revalued value of PT. ABC's ship assets, resulting in an increase in tax liabilities. This research has significant implications for companies in implementing proper accounting practices and complying with applicable tax regulations, as well as for tax authorities in improving supervision and tax compliance.

Project scheduling is an important element for shipyard companies to gain more profit. The most frequently used analysis is the Critical Path Method (CPM). However, in reality, planning using the CPM method is considered less efficient because it does not consider the productivity of each job in it and adds safety time which causes the project duration to become longer. In accordance with the above problems, a new method for planning project schedules is now being developed, namely Critical Chain Project Management (CCPM). CCPM is a project planning method that emphasizes the resources needed to carry out existing tasks in the project. This method is carried out by eliminating multitasking, student syndrome, Parkinson's law and providing a buffer at the end of the project. In this final project, a comparison of the duration of the results of applying the CCPM method with the Critical Path Method (CPM) method is carried out in a case study of ship repairs at PT. Galangan Kapal Madura. The initial project scheduling uses the traditional method in the form of a Gantt chart which is then broken down in more detail and completely with the relationship between activities in the form of CPM, and then will be compared with the duration of the results of CCPM scheduling which has eliminated multitasking, eliminated Safety time for each activity and provided a buffer in the work.

Punctuality is a crucial factor in ship repair projects because it directly affects operational efficiency, project costs, and the utilization rate of shipyard facilities. Delays in work completion can lead to increased costs, disruption of ship operational schedules, and decreased shipyard productivity. Therefore, this study aims to analyze and optimize the repair scheduling of Ship X at PT XYZ using the Critical Path Method (CPM). The research data were obtained from the actual project schedule compiled using Microsoft Project software, including the duration of each activity and the dependency relationships between tasks. The analysis results show that the project has one main critical path with a total duration of 74 hours. Most activities are on the critical path with a float value of 0 hours, while the Non-Destructive Test Penetrant Testing activity has a time slack of 1 hour. The application of the CPM method has proven effective in identifying critical activities, improving schedule control, and supporting managerial decision-making in optimizing ship repair projects.  

This study aims to analyze the need for barges and tugboats in distributing Crude Palm Oil (CPO) in the West Papua region. The analysis is conducted based on three main aspects: the balance of supply and demand, ship operational costs, and shipping time, to determine the most efficient mode of sea transportation. The research method used is a quantitative approach by processing CPO distribution data owned by PT Kurhanz Trans in 2024. The results show that the combination of a 240-foot barge with a 5,000 HP tugboat is the most optimal alternative. This combination is able to balance cargo capacity, operational cost efficiency, and shipping time. The total operating cost of a 240-foot barge is recorded as lower than a 230-foot barge, with the same shipping time of 70 hours for a distance of 140 nautical miles. Thus, the 240-foot barge can be recommended as the best alternative to support the smooth distribution of CPO in the West Papua region efficiently and economically.    

The maritime transport sector plays a vital role in international logistics, including the transport of special cargo such as live cattle, which requires specific administrative and operational handling. PT. Bahari Eka Nusantara Belawan Branch, as a ship agency company, is responsible for ensuring the smooth flow of ship services from arrival to departure at the Port of Belawan. This study aims to analyze the flow of agency management for special cattle cargo on the vessel MV Gloucester Express and to identify the coordination efforts carried out with relevant agencies to ensure service efficiency. The method used in this research is descriptive qualitative with data collected through field observations and literature studies. The results show that the agency flow involves three main stages: pre-arrival, arrival, and departure, with a focus on strict animal health documentation and coordination with the Quarantine Office. The study concludes that while the process generally runs well, administrative precision and real-time communication with the authorities are critical factors in preventing delays in unloading live cattle.

In Indonesia, maritime safety remains a problem. Ship captains and ship owners often disregard maritime safety standards, particularly for fishing vessels. Provisions for criminal liability for domestic fishing vessels that fail to meet maritime safety standards are an important legal instrument for regulating and enforcing maritime safety regulations in the fisheries sector. Failure of vessels to comply with safety requirements, such as the completeness of safety equipment, engine condition, and vessel structure, can potentially lead to accidents that endanger the lives of crew members and negatively impact the marine environment. This study uses a normative research method with a legislative approach. This article focuses on examining aspects of criminal liability, including the subjects, objects, and legal sanctions imposed for violations of maritime safety standards. The results indicate that perpetrators of violations can be subject to criminal sanctions in the form of fines, detention, and even revocation of vessel operating permits, taking into account human rights and environmental protection. Effective and synergistic law enforcement between relevant authorities is essential to provide a deterrent effect, encourage compliance with safety standards, and improve the system for the sustainability of marine resources.

The rapid development of the sea transportation industry produces a massive and complex volume of transaction data, requiring strategic management to support managerial decision-making. This research aims to implement the Executive Information System on SeaPass in order to evaluate the performance of ship ticket sales. The research method uses data visualization with a two-level drill-down mechanism, which allows the presentation of information hierarchically from general summaries to specific details. The methodological stages include needs analysis, user interface (UI) design using Figma, front-end implementation with HTML, CSS, and JavaScript, database integration, and system testing through Black Box Testing. The results showed that the SIE implementation successfully integrated operational data, including schedules, ships, and manifests, into an interactive dashboard. The two-level drill-down feature provides the ability for executives to identify operational anomalies and market fluctuations in real-time. In conclusion, the system significantly enhances executive data analysis capabilities, transforming complex transaction data into accurate strategic information, thereby supporting more precise business decision-making and adaptive to the dynamics of the marine transportation market.

This study aims to design and test a Dual Axis Solar Tracker to improve the energy absorption efficiency of solar panels on ships. The system is designed with a two-axis movement mechanism (horizontal and vertical) using a linear actuator motor controlled by Arduino Nano and ESP32. Testing was conducted on a 20 WP solar panel in Surabaya for 30 days, divided into three methods: 10 days using an LDR sensor, 10 days using an RTC, and 10 days in static conditions without a sensor. Voltage, current, and power data were measured every 30 minutes at 07.00–17.00 WIB. The test results show that the RTC method provides the highest and most stable output power, according to the sun's movement patterns in tropical areas, while the LDR method responds quickly to changes in light intensity but is less stable in changing weather. Static installation produces the lowest power. This system is able to maintain the panel orientation perpendicular to the sun's rays, thus increasing energy efficiency compared to static systems. These findings prove that dual-axis solar tracker technology, especially with an RTC sensor, is effective in dynamic maritime environments and can be a practical solution for optimizing renewable energy on ships. The most effective results using RTC sensors demonstrated the most stable and high power output, especially since the sun in tropical areas like Surabaya moves fairly consistently following a cyclical pattern. The success of this system not only increases the energy output of solar panels but also provides a practical solution for renewable energy applications in tropical climates.

The rapid development of the sea transportation industry produces a massive and complex volume of transaction data, requiring strategic management to support managerial decision-making. This research aims to implement the Executive Information System on SeaPass in order to evaluate the performance of ship ticket sales. The research method uses data visualization with a two-level drill-down mechanism, which allows the presentation of information hierarchically from general summaries to specific details. The methodological stages include needs analysis, user interface (UI) design using Figma, front-end implementation with HTML, CSS, and JavaScript, database integration, and system testing through Black Box Testing. The results showed that the SIE implementation successfully integrated operational data, including schedules, ships, and manifests, into an interactive dashboard. The two-level drill-down feature provides the ability for executives to identify operational anomalies and market fluctuations in real-time. In conclusion, the system significantly enhances executive data analysis capabilities, transforming complex transaction data into accurate strategic information, thereby supporting more precise business decision-making and adaptive to the dynamics of the marine transportation market.

This research is purposely conducted to evaluate and compare the effectiveness, efficiency, applicability  and appropriateness of modern firefighting systems installed on board ships. As a result, the review attempt to  ascertain the significance of firefighting systems on ships in terms of their safety, types, structure, principles as  well as installations. In this way, the review tries to justify the importance of these systems on board ships. The design of this survey revolves around three basic elements that incorporate the complete firefighting  procedure. These components include: modern technology of firefighting, different types of systems that are  used on board ships and people traits in terms of drilling, firefighting training to deal with any incident of fire.  In the previous decade, the globe has experienced massive destructions, harms and injuries resulting from fire incidents on ships. This has triggered and ignited enhanced fabrication and staging of new practices,  technologies and inventions aimed at efficiently deal with fire incidents so as to support the safekeeping and  reliability on these fire systems on board ships. Equally, through this technological enhancement, the  firefighting systems have been designed to facilitate rapid detection capable of differentiating between real  smokes or flames indicators in case of a fire event on board ship. In recent times, these technological  developments have been viewed as strategies that help ship owners to ensure better protection of the crew’s life,  ship’s inventories as well as minimising on the possible losses that occur as a result of fire events on board ship.  Therefore, with the review of the recent or latest methods and technologies for speedy fire detection on ships,  the review demonstrates enhancement attributes, features and qualities of these new systems. Additionally, the  paper critically evaluates the components of these firefighting systems, as well as looking at their competences,  capabilities, benefits and applicability on board ships.

In this case, it refers to the purpose of the content in this final assignment, namely by compiling a schedule for the Implementation of KM.Mutiara Ferindo 5 Ship Maintenance during the docking process at the PT.PAL Indonesia shipyard. Making a schedule includes what components are repaired while the ship is in the shipyard, making a schedule for managing ship maintenance that has been carried out at the shipyard. The data used in this thesis is data from PT.Antosim Lampung Pelayaran Surabaya and the researcher himself. The type of data used in this study is Primary data, in this Primary data the researcher will obtain data obtained directly from the statements of the workers who will be related to the problem being studied and the results of questionnaires distributed to several employees related to this study. In the implementation of repairs, there is a list of jobs that show how many work items must be done. So this list of jobs has been approved to be carried out in the ship repair process. The repair work of the KM. Mutiara Ferindo 5 ship which carries out planned repairs both at the shipyard and when the ship anchors at sea carries out technical and economical maintenance. Repair work on RO-RO vessels involves extensive maintenance, as determined by the ship's office and authorized crew members. The repair work on the KM Mutiara Ferindo 5 was well-planned, including safety equipment and components that play a crucial role in the smooth operation of the ship (maintenance of the entire engine room, deck, safety equipment, and maintenance of the ship's interior and exterior). An economic system was implemented to estimate the remaining funds after maintenance at the shipyard.

This research is aimed at examining the operational strategies carried out by PT. Samudera Sarana Karunia Dumai in ensuring the smooth operation of the Mt. Meghna Trader ship at Pelindo Dumai Port. The main focus of the research is directed at the identification and assessment of the effectiveness of operational strategies which include the planning, implementation, and control stages of various activities such as loading and unloading, logistics, coordination with relevant parties at the port, and operational risk management. This research also includes consideration of external factors, including port regulations, market conditions, available infrastructure, and supply chain dynamics. In addition, this study emphasizes the importance of continuous performance evaluation to ensure that ship operations can run according to safety standards, time efficiency, and procedural accuracy. A qualitative approach with a case study design is used and reinforced by quantitative data to get a more comprehensive analytical picture. Data was obtained through in-depth interviews, direct observations in the field, review of operational documents, and surveys involving internal and external parties who play a role in supporting the operational process of ships at the port.