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International Journal of Marine Engineering Innovation and Research
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 25415972     EISSN : 25481479     DOI : ttp://dx.doi.org/10.12962/j25481479
Core Subject : Science, Social, Engineering,
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
International Journal of Marine Engineering Innovation and Research (IJMEIR) is an open-access journal, which means that visitors all over the world could publish, read, download, cite and distribute papers published in this journal for free of cost. IJMEIR journal has a vast group of visitors, a far-reaching impact and pretty high citation. IJMEIR adopts a peer-review model, which insured fast publishing and convenient submission. IJMEIR now cordially inviting you to contribute or recommend quality papers to us. This journal is geared towards the dissemination of original innovation, research and practical contributions by both scientists and engineers, from both academia and industry. Theses, dissertations, research papers, and reviews associated with all aspects of marine engineering, marine sciences, and marine technology are all acceptable for publication. International Journal of Marine Engineering Innovation and Research (IJMEIR) focus and scopes are preserve prompt publication of manuscripts that meet the broad-spectrum criteria of scientific excellence. Areas of interest include, but are not limited to: Automotive Biochemical Biology Biomedical science Biophysics and biochemistry Chemical Chemistry Combat Engineering Communication Computer science Construction Energy Energy storage Engineering geology Enterprise Entertainment Environmental Environmental Engineering Science Environmental Risk Assessment Environmental technology Financial Engineering Fire Protection Engineering Fisheries science Fishing Food Science and Technology Health Care & Public Health, Health Safety Health Technologies Industrial Technology Industry Business Informatics Machinery Manufacturing Marine Engineering Marine sciences Marine technology Marine biology Marine economic Marine engines Marine fisheries Marine fuel Marine geology Marine geophysic Marine management Marine oil and gas Marine policy Material sciences Materials science and engineering Mathematics Mechanics Medical Technology Metallurgical Micro-technology Military Ammunition Military Technology Military Technology and equipment Mining Motor Vehicles Naval Engineering Neuroscience Nuclear technology Ocean Robotics and Automation Safety Engineering Sanitary Engineering Space Technology Statistics Traffic Transport Visual Technology
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 1,128 Documents
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Anchorage Offset Sensitivity Analysis of a Single Point Mooring System with a Moored Crude Oil Tanker in the Gulf of Guinea Oghenethoja Umuteme; Charles U. Orji; Elakpa Augustine
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

Deepwater Single Point Mooring (SPM) systems increasingly integrate Steel Catenary Risers (SCRs) to enable high-pressure hydrocarbon transfer in water depths exceeding 500 m. While SCRs provide structural robustness, their high axial stiffness introduces strong coupling between seabed anchors and the surface buoy, significantly influencing system stability. This effect becomes critical in swell-dominated regions such as the Gulf of Guinea (GoG), where long-period waves (Tp ≈ 12–20 s) induce low-frequency surge motions of moored Very Large Crude Carriers (VLCCs), generating substantial loads that are transmitted through the tanker hawser to the buoy. This study numerically investigates the influence of anchorage offset on the mechanical response of a deepwater SPM–SCR system using a six-degree-of-freedom time-domain model developed in ANSYS Aqwa. The system comprises a cylindrical SPM buoy connected to a VLCC via a polyester hawser and restrained by six symmetrically arranged SCRs. Parametric simulations were performed for anchor offsets ranging from 500 m to 2,000 m under representative environmental conditions. Results reveal a pronounced nonlinear response governed by the transition of SCRs from seabed-supported catenary behaviour to a semi-taut configuration as offset increases. Beyond offsets of approximately 1,000–1,500 m, rapid amplification of riser tension occurs in offset-aligned legs, accompanied by large horizontal restoring forces and significant downward loads acting on the buoy. These vertical components can exceed the available buoyancy restoring capacity, indicating potential loss of hydrostatic stability. The polyester hawser exhibited slackening under large offsets, suggesting susceptibility to snap loading during dynamic excitation. The findings demonstrate that anchorage offset strongly governs load redistribution and stability in SCR-connected SPM systems, highlighting the need for optimized mooring footprint design to maintain structural compliance and safe offshore loading operations in deepwater swell environments.
Effect of Hydrofoil Angle of Attack on Resistance Reduction and Lift Generation in a Planing Hull M Daffa Nafis Shafwan; Kurniawan Teguh Waskito
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

Abstract¾Hydrodynamic resistance remains a key factor governing the performance of high-speed planing vessels, as it directly determines propulsion power requirements. Despite extensive studies on hydrofoil performance, the application of the NACA 6409 profile in planing hull vessels remains limited. In particular, its potential as a fixed hydrofoil configuration, which may reduce design complexity and enhance practical implementation, has not been thoroughly investigated. Therefore, this study aims to evaluate the effect of hydrofoil angle of attack on resistance reduction and lift generation in a small planing hull vessel. Numerical simulations were conducted using Computational Fluid Dynamics (CFD) in ANSYS Fluent with the SST k–ω turbulence model. Angles of attack of 0°, 5°, 10°, and 15° were analyzed at operating speeds of 15 and 20 knots under foilborne conditions. The results show that low angles of attack, particularly 0° and 5°, provide the greatest resistance reduction, achieving up to 63.3% lower total resistance compared to the non-hydrofoil configuration at 20 knots. In contrast, higher angles of attack (≥10°) increase resistance due to induced drag and flow separation. The hydrofoil configuration also reduces propulsion power requirements and enables foilborne operation at speeds above 15 knots with a minimum angle of attack of 5°. These findings identify the optimal operating range of the NACA 6409 hydrofoil and provide practical design guidance for improving the efficiency of hydrofoil-assisted planing vessels.
Standardized Marine Communication Proficiency Among Deck Officers: A Competency-Based Assessment of SMCP Implementation Under STCW Convention Frameworks Marudut Bernadtua Simanjuntak; Chanra Purnama; Irfan Faozun
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

Maritime communication failures remain a critical contributor to navigational accidents globally, yet the extent to which the IMO Standard Marine Communication Phrases (SMCP) are effectively implemented within maritime education institutions — particularly in major seafarer-supplying nations — remains underexplored. This study examines SMCP proficiency among deck officers and cadets at Indonesian maritime institutions through a competency-based assessment aligned with the STCW Manila Amendments. Using a mixed-methods design incorporating a validated four-domain proficiency rubric, structured questionnaires, and semi-structured interviews with 120 participants drawn from maritime educators, deck officer cadets, and certified officers, the study identifies a systematic proficiency gap between institutional training outcomes and STCW-mandated communicative standards. Results indicate that the majority of cadets perform at the Developing level, with particularly pronounced deficiencies in Distress and VTS Communication domains. Qualitative findings attribute this gap to the dominance of declarative instructional approaches, limited simulator access, and insufficient integration of communicative simulation in curriculum design. The study contributes a validated assessment framework and contextually grounded findings with direct implications for maritime curriculum reform, STCW quality assurance, and seafarer safety in Indonesia.
Technical Language Barriers and Engineering Communication Challenges Among Marine Engine Officers: Implications for STCW Certification and Onboard Safety Performance Marudut Bernadtua Simanjuntak; Ardiansyah; Natanael Suranta
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

The engine room represents one of the most technically demanding and communicatively complex environments in maritime operations, yet engineering communication among marine engine officers remains substantially underexplored relative to the well-documented study of bridge communication. This study investigates technical language barriers and engineering communication challenges among marine engine officers within Indonesian maritime institutions, examining their implications for STCW certification outcomes and onboard safety performance. Using a mixed-methods design incorporating a validated technical communication assessment rubric, structured questionnaires, and semi-structured interviews with 115 participants comprising marine engineering educators, engineering cadets, and certified engine officers, the study identifies a pronounced proficiency deficit in machinery-related technical language, particularly in watch handover protocols and emergency engineering communication. Quantitative findings reveal that engineering cadets achieve an overall mean proficiency score of 2.05 on a four-point scale aligned with STCW Chapter III competency standards, falling within the Developing range across all four communication domains assessed. Qualitative analysis attributes this deficit to the dominance of Bahasa Indonesia as the medium of technical instruction, the absence of engineering-specific communication simulation, and a systemic disconnect between language training and technical training programs. The study contributes a theoretically grounded assessment framework specific to engine room communication and advances evidence-based recommendations for curriculum integration, simulator-based pedagogy, and regulatory quality assurance in Indonesian maritime engineering education.
Characterization of Gelam Wood Pellets: Effects of Compaction Pressure and Binder Type Andy Nugraha; Aqli Mursadin; Apip Amrullah; Herry Irawansyah; Randica Erwin M. Tampubolon; Azie Aprianto
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

Wood pellets represent a mechanical densification technology that enhances biomass density for more efficient utilization. In this study, Gelam wood was used as the raw material, with variations in binder type (palm sugar and molasses) and compaction pressure (40, 60, and 80 kg/cm²). An experimental approach was employed to directly evaluate the physical and combustion characteristics of the produced pellets. The results indicate that pellets without binder (C3) exhibit superior physical properties, particularly lower moisture and ash content. In contrast, pellets with binders—molasses (C1) and palm sugar (C2)—demonstrate higher calorific values that meet standard requirements. The increased volatile matter observed in C3 suggests a faster ignition and more reactive combustion behavior. Furthermore, combustion characteristics reveal that ignition time, ignition point, and combustion temperature increase proportionally with higher compaction pressure, while the combustion rate shows an inverse trend. Among the tested binders, molasses provides the most favorable combustion performance. Overall, pellets with higher density tend to produce shorter but more stable flames, indicating improved combustion stability. These findings highlight the significant role of compaction pressure and binder type in optimizing the quality and performance of Gelam wood pellets for energy applications.
Analysis of Fishing Vessel Queueing Models for Optimizing Palabuhanratu Fishing Port Operations Annisa Fitri; Sugeng Hari Wisudo; Tri Wiji Nurani
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

This study is motivated by the importance of operational efficiency in fishing ports in addressing the dynamics of vessel arrivals and limited service facilities. The objective of this study is to analyze a fishing vessel queue model to optimize port operations at the Palabuhanratu Port based on existing facility conditions. The methods used include field observation, interviews, and quantitative analysis using a queue model with a Poisson distribution approach for vessel arrivals and an exponential distribution for service. The results of the analysis show that the queue system follows the (M/M/5):(FCFS/~/~) model with five service points operating in parallel. The vessel arrival rate is relatively low compared to the service capacity, so that the port is in an under capacity condition with a high probability of an empty system and almost no waiting time in the queue. To improve optimization, scenarios were carried out to increase the number or frequency of vessels in several vessel size categories, namely 21 vessels (21–30 GT), 63 vessels (5–10 GT), 12 vessels (11–20 GT), 123 vessels (5–10 GT), 7 vessels (51–100 GT), 5 vessels (101–200 GT), 31 vessels (5–10 GT), and 4 vessels (11–20 GT). Simulation results show that the addition is able to increase the utilization of port facilities without causing significant queues, so that operational efficiency can be improved sustainably.
The Effect of Structural Configuration on the Effectiveness of Double Pontoon Floating Breakwater: A Review Muhammad Salman; Sujantoko Sujantoko; Haryo Dwito Armono
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

The need for flexible and environmentally friendly coastal protection has driven the development of floating breakwaters (FBs), particularly the double pontoon floating breakwater (DPFB), which offers adaptive capabilities to varying wave conditions. Despite their widespread application, the effectiveness of DPFBs remains highly dependent on structural configuration, highlighting the need for a comprehensive literature review to understand wave attenuation mechanisms and the influence of design parameters on the transmission coefficient (KT) and reflection coefficient (KR). This review examines the fundamental principles of wave structure interaction for floating systems, energy dissipation mechanisms, and analyzes four key parameters that influence system performance: pontoon geometry, porosity, the presence or absence of inter-pontoon connectors, and gap spacing. The findings indicate that pontoon geometry is the dominant factor governing the initial hydrodynamic response, while porosity plays a significant role in creating effective internal energy dissipation. Gap spacing controls wave interference and resonance, whereas connector use affects the system's dynamic stability, though comparative studies on this aspect remain limited. Overall, wave attenuation effectiveness is not determined by a single parameter but by the combined interactions among these four aspects in influencing KT and KR values. This review emphasizes the need for further research on multi-parameter evaluation and the development of more realistic hydrodynamic models to achieve optimal, adaptive DPFB configurations across diverse marine environments.
Intelligent Engine Mismatch Detection in Detroit Diesel Alusion DW.6WE Using Artificial Neural Networks Ryan Yudha Adhitya
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

The maritime industry plays a strategic role in supporting international trade, particularly in the distribution of goods between countries. The main engine, as the primary component that powers a ship, is crucial for its smooth operation. Therefore, monitoring engine condition is crucial. Indicators such as main bearing temperature, exhaust gas temperature, and engine rotation speed are used to assess engine health. Preventive maintenance approaches that rely on fixed schedules are unable to identify damage early. Therefore, Artificial Neural Network (ANN) technology is used to analyze sensor data in real time. Data is sent to the PLC, processed by the ANN, and classified into Normal, Alert, or Danger conditions. This information is displayed visually and accessible to the ship's crew via the node-red platform with the Modbus TCP/IP protocol. Results show that the system has a classification accuracy of 94.11%, is capable of activating automatic alarms, and sends data in real time via the MQTT protocol. This demonstrates the effectiveness of ANN in an intelligent and adaptive ship engine monitoring system.

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