JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN

Analysis of Fuel Efficiency and Speed Increase on Ferry MV BATAM FAST 20 (High Speed Craft) through the Installation of a Hull Vane

2025-09-04T02:19:41+00:00

This study investigates the impact of Hull Vane System installation on fuel efficiency and speed enhancement for High Speed Craft (HSC) ferries, focusing on MV. Batam Fast 20 operating on the Batam–Singapore route. The Hull Vane, a fixed hydrofoil mounted at the stern below the waterline, is designed to reduce hydrodynamic resistance and improve vessel performance. Numerical simulations using Computational Fluid Dynamics (CFD) with RANSE-based solvers were conducted across various speeds (10–25 knots) and foil attack angles (0°, 2°, 4°,6°). Results indicate that Hull Vane offers significant drag reduction only at low speeds (10 knots), achieving up to 26.99% resistance reduction. However, at operational speeds (20–25 knots), the system increases resistance due to excessive lift, causing bow trim and higher wetted surface area. Validation was performed through grid independence studies and comparison with experimental data and Maxsurf Resistance software. The findings conclude that Hull Vane System is unsuitable for MV. Batam Fast 20 due to its hull geometry and waterjet configuration. The study recommends exploring alternative technologies such as bow foils or automated trim control systems for high-speed vessels, emphasizing the need for adaptive hydrodynamic solutions in modern ferry operations.

Analysis of the Impact of Intercooler Effectiveness Reduction On Combustion Air Pressure and Fuel Consumption OF THE MAIN ENGINE OF THE NINGBO 8300 MV SEMANGAT MAS

2025-09-04T02:50:56+00:00

The decrease in intercooler effectiveness in a ship's main engine can significantly affect performance and fuel efficiency. This final project aims to analyze the impact of the decrease in intercooler effectiveness on combustion air pressure and fuel consumption of the main engine of the Ningbo 8300 MV Semangat Mas. The research was conducted using observation methods and data analysis from measurements obtained during the ship's operation. The collected data includes combustion air pressure, intake air temperature, and fuel consumption under normal engine conditions and conditions with decreased intercooler effectiveness. The results of the study show that the decrease in intercooler effectiveness causes an increase in intake air temperature, which in turn raises combustion air pressure and fuel consumption. This phenomenon indicates that the decrease in intercooler performance can worsen fuel efficiency and reduce overall engine performance. The conclusion of this research highlights the importance of routine intercooler maintenance to ensure the optimal performance of the ship's main engine, reduce fuel consumption, and improve the ship's operational efficiency.

Analysis of Gearbox Ratio Mismatchwith Main Engine RPM, Resulting in High Temperature Lubricating Oil Lubrication in the Gearbox of MV. Prakarsa Mas

2025-09-04T03:46:22+00:00

Gearbox is a vital component in the ship propulsion system that functions to transmit power from the main engine to the propeller. On the MV. Mas Initiative, found a discrepancy between the gearbox rotation ratio with the RPM of the main engine, which has an impact on increasing the lubrication temperature of the gearbox lubricating oil to exceed the optimal limit. This condition can reduce lubrication efficiency, accelerate component wear, andreduce overall ship performance. This study aims to analyze the factors that cause gearbox ratio mismatch, evaluate its impact on lubricant temperature, and develop technical recommendations to overcome these problems. The method used is descriptive qualitative approach through direct observation, interviews with the crew, and literature studies. The results showed that the main causes of this discrepancy include damage to gearbox components, a non-optimal lubrication system, as well as a lack of regular maintenance. The high temperature of the lubricant has an impact on decreasing the viscosity of the oil and decreasing the efficiency of power transmission. Recommended solutions include regular cleaning of the oil cooler and filter, checking the pressure of the oil pump, as well as regular oil quality testing. It is expectedthat the results of this study canbe a referencein gearbox maintenance to improve the reliability and operational efficiency of the ship.

Optimization of Fuel System Maintenance for Smooth Operation of Main Engines on KM Pratama Mas Ship

2025-09-04T04:02:49+00:00

The main engine is the primary component in a ship's propulsion system, responsible for the continuity of its voyages. A critical supporting system for the main engine's performance is the fuel system. This system supplies fuel at the correct pressure and quantity to the combustion chamber, ensuring optimal combustion. Any disruption or irregularity in the fuel system can cause the main engine's performance to decline, potentially leading to serious damage that hinders the ship's operation. This study aims to analyze the factors causing fuel inefficiency in the main engine and to formulate technical recommendations to address these issues. The research uses a descriptive qualitative approach through direct observation, interviews with the ship's crew, and a literature review. The results indicate that the main causes of these issues include:An increase in exhaust gas temperature due to the fuel injector's operating hours exceeding its maintenance schedule, leading to the injector not functioning optimally.The main engine shutting down unexpectedly due to dirt and water in the fuel, which interfered with the fuel purifier's operation, resulting in poor fuel quality.The suggested solutions include installing a separator to achieve better fuel quality and increasing the temperature of the MFO fuel. It is hoped that the findings of this research can serve as a reference for fuel system maintenance to improve the ship's operational reliability and efficiency.

Optimization of RBD Palm Stearin Cargo Handling to Ensure the Smooth Unloading Process on MT Celeste I

2025-11-14T03:02:49+00:00

RBD Palm Stearin is the solid fraction of palm oil with a high melting point, making it highly sensitive to temperature variations during sea transportation and cargo discharge. This characteristic causes the cargo to solidify easily, especially when vessels operate in low ambient temperatures. On board MT Celeste I, such conditions have led to flow obstructions, cargo pump stoppages, and delays in loading and unloading, adversely affecting operational efficiency a nd work safety.This study aims to analyze the technical, operational, and human factors contributing to cargo solidification and to formulate optimization strategies to ensure safe and efficient discharge operations. A qualitative approach was applied through direct onboard observations, in-depth interviews with crew members and port personnel, and a review of operational documents from December 2023 to December 2024. The data were thematically analyzed to identify causal patterns, event mechanisms, and best practices in temperature control and cargo handling. The research focuses on temperature management, equipment readiness, and strict adherence to Standard Operating Procedures (SOPs) from pre-discharge to final stripping. The results indicate that smooth operations depend heavily on maintaining temperatures above the melting point through well-functioning heaters, effective steam tracing systems, gradual preheating, and even heat circulation. Key challenges include heater leakages, solid accumulation in pipelines or manifolds, thermal effects from ballast operations, and procedural errors. The study recommends implementing real-time temperature monitoring, conducting regular preventive maintenance, enhancing crew competence through technical training, and strengthening SOPs to ensure that heating and cargo discharge processes are carried out safely and efficiently.

Optimizing the Enhancement of Dynamic Positioning Operator Competencies on MV. ENA HABITAT DP-II

2025-11-22T00:44:51+00:00

The Dynamic Positioning (DP) System is essential in modern maritime operations, especially for offshore projects, as it enables vessels to maintain a fixed position and heading without traditional anchoring. A DP Operator plays a critical role in ensuring the system functions effectively, and the success of DP operations largely depends on their competence. Therefore, optimizing operator skills is key to safe and efficient operations. This qualitative study draws on the author’s observations as a DP Operator aboard the MV. ENA HABITAT, as well as relevant literature. It identifies three essential phases of DP offshore operations: pre-operation procedures, on-DP operation, and post-operation or termination. Neglecting any of these stages can disrupt project progress, cause financial losses, or compromise safety. The study also highlights common challenges faced during DP operations on MV. ENA HABITAT DP-II, including sensor failures, thruster issues, system configuration difficulties, harsh environmental conditions, human error, external infrastructure interference, and communication breakdowns. These issues, if unaddressed, can lead to serious incidents. To mitigate these risks, the paper emphasizes enhancing DP Operator capabilities through a range of strategies: accumulating sea time on various vessel types, engaging in advanced simulator training, deepening system knowledge via FMEA (Failure Mode and Effects Analysis) courses, regularly evaluating operations, participating in Continuing Professional Development (CPD), and strengthening non-technical skills such as teamwork and communication.Improving these competencies ensures not only operational success but also the safety and security of both vessel and crew during DP activities.

Safety Risk Analysis in AHTS Ship Operations Using the HAZOP Method

2025-12-12T03:08:33+00:00

Occupational safety on board ships is a crucial aspect that must be fully considered, especially in high-risk Anchor Handling Tug Supply (AHTS) vessel activities. This study aims to conduct a safety risk assessment on AHTS vessel activities using the Hazard and Operability Study (HAZOP) method. The research method used is descriptive qualitative, which involves direct observation, interviews, and documentation analysis to obtain comprehensive data on potential hazards and operability in AHTS vessel activities. Some key findings include the identification of often overlooked potential hazards, such as adverse weather conditions, poorly maintained equipment, and non-compliance with safety procedures. Based on the HAZOP analysis used in this study, these risks will be categorized into three levels: low risk, moderate risk, and high risk. The analysis shows that most risks are at the moderate risk level, which requires a planned control approach and temporary measures to reduce the risks. Implementation of recommended mitigation measures, such as regular training on occupational safety, better equipment maintenance, and strict supervision of procedural compliance, can shift the risks from the moderate to low risk level. Effectively implementing the HAZOP method can improve occupational safety on AHTS vessels.

Analysis of Container Lashing System Optimization Based on Technical, Economic, and Environmental Aspects in an Effort to Improve Work Safety and Cargo Stability on KM. Tanto Handal

2025-12-16T01:32:05+00:00

Navigational safety is a crucial aspect of ship operations, where the stability and security of cargo play a significant role. MV Tanto Handal, as a container vessel, requires proper lashing procedures to prevent cargo shifting that may lead to accidents. This study focuses on optimizing container lashing to improve cargo stability and navigational safety. The optimization process involves evaluating lashing techniques, equipment feasibility, safety procedures, and inspections conducted during the voyage. Factors such as inadequate equipment, weather conditions, and human error are identified as major causes of ineffective lashing. The findings emphasize the importance of enhancing crew training and improving lashing procedures to achieve safer and more efficient operations.

Case Study of the Sinking of the KLM Fajar Lorena Safari in Situbondo Waters, Reviewed Based on Statistical Data from the Perak-Surabaya Meteorology, Climatology, and Geophysics Agency (BMKG)

2025-12-30T08:29:44+00:00

Shipping safety in Indonesia still faces various challenges, one of which is the influence of the dynamics of the marine environment, particularly sea waves. This study examines the sinking of the Motor Sailing Ship (KLM) Fajar Lorena Safari that occurred in Situbondo Waters on December 8, 2024, at 1:00 PM WIB by reviewing sea wave conditions based on statistical data from the BMKG Perak Maritime Meteorology Station in Surabaya. The analysis was conducted by linking the parameters of significant wave height, wind direction and speed, and surface currents to the ship's dynamic response from the perspective of wave physics and fluid mechanics. The results of the study indicate that although the significant wave height at the time of the incident was relatively low, changes in wind direction and wave-current interactions have the potential to trigger cross waves that increase rolling motion and reduce the stability of traditional wooden ships. This condition is exacerbated by the limited dynamic stability of the ship and the possibility of water ingress into the hull. These findings emphasize that ship accidents are not always triggered by high waves, but rather by a combination of oceanographic factors and ship characteristics. Therefore, utilizing BMKG early warnings and understanding wave dynamics are important in efforts to mitigate shipping risks.

Analysis of Wave, Current, and Surface Wind Conditions on Shipping Safety Risks on the Tanjung Perak - Lembar Ship Route Based on BMKG Data 2024

2026-02-22T02:32:37+00:00

Maritime safety in Indonesia is highly influenced by oceanographic dynamics such as waves, surface currents, and winds, especially along critical routes like Tanjung Perak–Lembar. However, studies integrating these parameters with recent marine meteorological data for this route remain limited. This study aims to assess seasonal variability in wave height, current speed, and wind conditions in 2024 to evaluate potential risks to navigation. A quantitative approach was applied using secondary data from the BMKG InaWave model, focusing on seven observation points along the route. Analysis was conducted using Python and Excel for spatial mapping and temporal trend visualization. Results show that (1) wind speeds during the southeast monsoon reached 7.14 m/s, contributing to wave heights up to 0.87 meters; (2) surface currents exceeding 100 cm/s were frequently identified in the Lombok Strait; and (3) the combination of strong currents and moderate waves increases safety risks for small vessels and barges. These findings highlight the importance of incorporating updated marine meteorological data in voyage planning and early warning systems. The study contributes to regional maritime safety research and supports practical decision-making for ship operators and port authorities.

Analysis of Semarang Container Terminal Dock Operation Productivity Through Automatic Rubber Tyred Gantry (ARTG) Performance

2026-02-03T07:23:18+00:00

This study aims to analyze the productivity of Semarang Container Terminal dock operations through the performance of automatic rubber tyred gantry (ARTG). The research approach used is descriptive quantitative with data collection methods through direct observation, interviews, and documentation. A total of seven samples were obtained from the documentation in the form of ARTG performance reports and dock operation productivity. Data were analyzed using descriptive statistics and trend tables to determine the performance of ARTG and the productivity of container terminal dock operations. In addition, using the Spearman-rho Rank Correlation Test (ρ) to determine the relationship between ARTG performance and container terminal dock operation productivity based on the company's monthly data. The results of the study showed fluctuations in ARTG performance and dock operation productivity with an average ARTG performance through the availability indicator of 98.21% and an average value of dock operation productivity through the Box Ship per Hour (BSH) indicator of 43.34 bph, as well as a significant and very strong relationship between ARTG performance and dock operation productivity with a significance value of 0.012 < (0.05) with a correlation coefficient value of 0.865. In addition, the results of observations and interviews also show a relationship between ARTG performance and the productivity of container terminal dock operations, as well as other supporting report data which are factors in the relationship between ARTG performance and dock operation productivity.

Port Facility Improvement and Vessel Call Dynamics: A Qualitative Analysis of Institutional and Infrastructure Constraints in a Regional Feeder Port

2026-02-23T02:15:16+00:00

Regional feeder ports play a critical role in supporting logistics connectivity and regional economic growth; however, their performance is often constrained by limited facilities and governance issues. This study aims to examine the relationship between port facility conditions, vessel call dynamics, and institutional constraints affecting the development of a regional feeder port. A qualitative interpretative approach was employed, using field observations, in-depth interviews with port authorities and stakeholders, and document analysis. Data were analyzed through thematic reduction, categorization, and analytical interpretation. The findings reveal that low vessel calls are not primarily driven by insufficient demand but by inadequate core facilities such as channel depth, berth length, and cargo handling equipment. Furthermore, overlapping authorities and the absence of updated port master planning documents significantly hinder investment decision-making. This study highlights that port facility improvement must be preceded by institutional resolution to ensure effective and sustainable port development.

RFID-Based Warehouse Management System for Improving Inventory Accuracy and Operational Efficiency

2026-03-03T02:41:20+00:00

Warehouse operations are increasingly required to deliver high levels of accuracy, speed, and real-time visibility in response to growing supply chain complexity and customer expectations. However, conventional barcode-based warehouse management systems remain constrained by line-of-sight scanning, sequential data capture, and heavy reliance on manual intervention, which often lead to inventory inaccuracies and operational inefficiencies. This study investigates the implementation of Radio Frequency Identification (RFID) technology integrated with a Warehouse Management System (WMS) to enhance inventory accuracy and operational performance in warehouse environments. Using a case-based experimental research design, the study compares warehouse performance before and after RFID implementation across key processes, including receiving, storage, picking, and shipping. Operational data were collected through time studies, inventory audits, and error tracking under comparable workload conditions. The results demonstrate that RFID integration significantly improves overall inventory accuracy, reduces processing time by more than half, and decreases operational error rates by approximately eighty percent compared to a conventional barcode-based system. These improvements are primarily driven by automatic, non-line-of-sight, and simultaneous data capture enabled by RFID, which minimizes human intervention and ensures real-time synchronization between physical goods movement and digital inventory records. This research contributes empirical system-level evidence on the performance impact of RFID-enabled warehousing and proposes an integrated RFID–WMS implementation framework that supports end-to-end warehouse operations. The findings provide both theoretical insights and practical guidance for organizations seeking to adopt RFID as a foundation for smart warehouse transformation.

Comparative Analysis of Cost and Durability of Sch 40 Galvanized Pipe and Sch 80 Black Pipe for Seachest Sea Water Systems KM. Pratiwi Indah

2026-02-23T04:48:39+00:00

The seawater piping system on KM. Pratiwi Indah plays an important role in supporting ship operations; however, it is highly susceptible to damage due to the corrosive marine environment. This study aims to identify the causes of the seawater piping system replacement, compare the costs between galvanized pipe SCH 40 and black pipe SCH 80, and analyze the corrosion resistance of both pipe types. The research methods include the calculation of corrosion rate, remaining life, and Life Cycle Cost (LCC), supported by data presentation in tables and graphs. The analysis results indicate that the galvanized pipe has a corrosion rate of 0.35 mm/year with a remaining life of 15.14 years, while the black pipe has a corrosion rate of 0.53 mm/year with a remaining life of 16.41 years. Although the black pipe shows a slightly longer remaining life, the LCC calculation over a 30-year analysis period demonstrates that the galvanized pipe results in a lower total life cycle cost. Based on the technical and economic analysis, the galvanized SCH 40 pipe is recommended as the more optimal material for the seawater piping system on KM. Pratiwi Indah.

The Influence of Price, Promotion, Product Quality and Location on Gold Jewelry Purchasing Decisions at the Nirwana Gold Shop, Martapura City, Banjar Regency, South Kalimantan

2026-02-28T04:52:41+00:00

This study aims to analyze the effects of price, promotion, product quality, and location on consumers’ purchasing decisions of gold jewelry at Nirwana Gold Shop in Martapura City, Banjar Regency, South Kalimantan. The research employed a quantitative approach using a survey method. Data were collected from 100 respondents who were customers of Nirwana Gold Shop, selected through purposive sampling. A structured questionnaire was used as the research instrument, and the data were analyzed using multiple linear regression analysis. The results indicate that price, promotion, product quality, and location simultaneously have a significant effect on purchasing decisions. Partially, all independent variables also show significant effects, with product quality emerging as the most dominant factor influencing purchasing decisions. These findings suggest that consumers’ decisions to purchase gold jewelry are not solely determined by price and promotional activities, but are also strongly influenced by product quality assurance and the strategic location of the store. Therefore, gold jewelry retailers are encouraged to implement integrated marketing strategies by maintaining high product quality, offering competitive pricing, conducting effective promotional activities, and selecting strategic business locations to enhance competitiveness and consumer loyalty.

The Influence of Product Quality, Price Discounts, and Promotions on Purchasing Decisions at the Musafir Fashion Store in Pasar Raya, Banjar Regency

2026-02-28T05:36:52+00:00

This study aims to analyze the effect of product quality, price discounts, and promotion on purchasing decisions at Musafir Fashion Store, Pasar Raya Martapura, Banjar Regency. This research employed a quantitative approach using a survey method. The population consisted of consumers who made purchases at the store, with a sample of 68 respondents determined using the Lemeshow formula. Data were collected through questionnaires, and data analysis techniques included multiple linear regression analysis, validity test, reliability test, F-test, t-test, and standardized beta coefficient test. The results indicate that product quality, price discounts, and promotion simultaneously have a positive and significant effect on purchasing decisions. Partially, each variable—product quality, price discounts, and promotion—also shows a positive and significant effect on purchasing decisions. Based on the dominance test, price discount is the most influential variable affecting purchasing decisions compared to product quality and promotion. These findings suggest that an appropriate price discount strategy, supported by good product quality and effective promotional activities, can significantly enhance consumer purchasing decisions.

The Influence of Emotional Intelligence, Intellectual Intelligence and Social Intelligence on Employee Performance in Martapura District, Banjar Regency, Kalimantan Province

2026-02-28T07:01:04+00:00

This study aims to analyze the effect of emotional intelligence, intellectual intelligence, and social intelligence on employee performance at the Martapura Kota District Office, Banjar Regency, South Kalimantan Province. The research employed a quantitative approach using a survey method. The population consisted of all employees at the Martapura Kota District Office, and a census sampling technique was applied. Data were collected through questionnaires using a Likert scale and analyzed using validity and reliability tests, multiple linear regression analysis, simultaneous testing (F-test), and partial testing (t-test) with the assistance of SPSS software. The results indicate that emotional intelligence, intellectual intelligence, and social intelligence simultaneously have a significant effect on employee performance. Partially, each independent variable also has a significant effect on employee performance. The coefficient of determination (R²) of 0.941 indicates that 94.1% of the variance in employee performance can be explained by emotional intelligence, intellectual intelligence, and social intelligence, while the remaining 5.9% is influenced by other factors outside this study. Based on the beta coefficient values, intellectual intelligence is identified as the most dominant variable influencing employee performance. These findings highlight the importance of developing intellectual, emotional, and social intelligence in an integrated manner to improve employee performance in government institutions.

The Influence of Service Quality and Employee Competence on Customer Satisfaction with Customer Trust as a Mediating Variable at PT Bank Perekonomian Rakyat Tapin Sejahtera Perseroda in Tapin Regency, South Kalimantan Province

2026-02-28T17:26:36+00:00

This study examines the influence of service quality and employee competence on customer satisfaction, with customer trust serving as an intervening variable. The research is driven by the urgent need for organizations to strengthen service quality and human resource capabilities to build trust and sustain customer satisfaction in an increasingly competitive environment. Adopting a quantitative approach, data were collected through surveys administered to customers who had directly experienced the services provided. The analysis utilized the PLS-SEM technique with SmartPLS software. The outer model evaluation confirms that all indicators meet validity and reliability standards, as reflected in outer loading values above 0.70, Average Variance Extracted (AVE) exceeding 0.50, and composite reliability and Cronbach’s alpha values within required thresholds. These results indicate that the constructs employed in the study are statistically robust. The inner model evaluation further demonstrates that service quality and employee competence both have positive and significant effects on customer trust and customer satisfaction. Customer trust is also shown to positively and significantly influence customer satisfaction. Moreover, the findings reveal that customer trust acts as a mediating variable in the relationship between service quality, employee competence, and customer satisfaction. This suggests that enhancing service quality and employee competence contributes not only directly to increased customer satisfaction but also indirectly through the strengthening of customer trust. Overall, this research provides theoretical contributions to the field of service management and offers practical guidance for organizations in formulating strategies to improve service quality and employee competence in order to achieve sustainable customer satisfaction.

The Influence of Teaching Experience, Training, and Education Level on Teacher Performance through Teacher Professionalism as an Intervening Variable at SMA Negeri 1 Barabai, South Kalimantan

2026-02-28T18:34:59+00:00

This study aims to analyze the effect of teaching experience, educational level, and training on teacher performance. A quantitative approach with a survey method was employed in this research. Data were collected through questionnaires distributed to teachers as research respondents. Data analysis was conducted using Structural Equation Modeling–Partial Least Squares (SEM-PLS). The measurement model (outer model) indicates that all research indicators meet the validity and reliability criteria, as reflected by factor loading values, composite reliability, and average variance extracted exceeding the required thresholds. Furthermore, the structural model (inner model) testing reveals that teaching experience and training have a positive and significant effect on teacher performance, while educational level shows a positive but insignificant effect. The coefficient of determination indicates that teacher performance can be moderately explained by the independent variables included in the model. These findings suggest that practical experience and competency enhancement through training play a more dominant role than formal educational background in improving teacher performance. The results are consistent with Abdul Kadir’s findings, which emphasize that professional competence development and teaching experience significantly contribute to improving teacher performance and learning quality. This study is expected to provide valuable insights for educational policymakers in designing more effective and sustainable teacher development programs.

The Effect of Leadership Style and Work Motivation on the Performance of Truck Drivers at PT Manggala Kiat Ananda

2026-03-03T14:26:49+00:00

This study aims to analyze the effect of leadership style and work motivation on the performance of truck drivers at PT Manggala Kiat Ananda, East Java area. A quantitative approach with a survey method was employed. Data were collected through questionnaires distributed to truck drivers as respondents and analyzed using multiple linear regression analysis. The results indicate that partially, leadership style has a positive and significant effect on truck drivers’ performance. Meanwhile, work motivation does not have a significant partial effect on performance. However, simultaneously, leadership style and work motivation significantly influence truck drivers’ performance. These findings suggest that drivers’ performance is more strongly influenced by structural and leadership factors than by individual motivational aspects alone. In a work environment characterized by standardized procedures and strict operational regulations, effective leadership plays a crucial role in enhancing discipline, responsibility, and work compliance. This study implies that transportation companies should strengthen operational leadership capacity and manage work motivation in an integrated manner to sustain performance improvement.