International Journal of Marine Engineering Innovation and Research
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
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<![CDATA[Effect Of Napthalene Mixture with Gasoline Fuel on Gasoline Engine Performance ]]>
<![CDATA[Yuniarto Agus Winoko]]>;
<![CDATA[Afifur Rohman]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.18703
<![CDATA[Naphthalene is a chemical hydrocarbon compound with the chemical formula C10H16O. Napthalene is a simple polycyclic aromatic hydrocarbon compound, in the form of a white crystalline solid with a characteristic odor and detectable by the sense of smell at concentrations as low as 0.08 ppm. As an aromatic compound, napthalene's structure consists of a pair of linked arene groups or benzene rings. Objective: To determine the ratio of the power produced by a gasoline engine using a mixture of naphthalene with 90 fuel compared to the use of pure fuel in the engine. Knowing the effect of exhaust emissions produced by gasoline engines using 90 octane fuel, with a mixture of naphthalene and without a mixture of naphthalene. The method used in this study was experimental, tested only with pertalite fuel, Pertamax and added camphor (Napthalene) consisting of 5gr, 10gr, 15gr with 2lt volume of 90 octane fuel fuel. The conclusion is expected that the addition of napthalene has an effect on power and exhaust emissions.]]>
<![CDATA[Risk Evaluation of Ship Repair Delays with The Failure Modes and Effects Analysis (FMEA) Method ]]>
<![CDATA[Intan Baroroh]]>;
<![CDATA[Ndaru Gilang Ramadhan]]>;
<![CDATA[Didik Hardianto]]>;
<![CDATA[Tri Agung Kristiyono]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19328
<![CDATA[Every ship, that is still actively operating in shipping must pay attention to repair or maintenance in accordance with classification standards. This was needed by management or ship owners to carry out maintenance planning. The shipyards as repair services, there are often obstacles during the repair process that cause the repair time to be longer. This is caused by limited work equipment, delivery of materials that are not in order, and lack of technical equipment. The purpose of research is to evaluate the risk of ship repair delays so there are no failures or delays in ship repair. The method used is the FMEA method (Failure Mode and Effect Analysis) to measure each failure in each activity that affects ship repair. The results showed an assessment score in the form of a Risk Priority Number (RPN) consisting of activities: amount of cutting machines is still limited with a score of 309.83, painting and welding failures at the same time with a score of 267.08, materials that come are remachined to fit the needs with a score of 335.06 and inadequate transportation equipment with a score of 294.16. Improvements made in the form of preparing amount of work tools before the work is carried out, conditioning the order of work according to the schedule and adding backup transportation.]]>
<![CDATA[The Analysis of Thrust and Efficiency of B – Series Propeller : Influence of Speed Variation ]]>
<![CDATA[Aldyn Clinton Partahi Oloan]]>;
<![CDATA[Muswar Muslim]]>;
<![CDATA[Ayom Buwono]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19435
<![CDATA[For variations in ship speed given data such as length perpendicular (LPP) 28 meters, propeller rotation (N) 290 rpm and shaft horse power (SHP) of 452.5 Hp by setting speed values varying from 4 knots to 9 knots, the average propeller efficiency for the B4-40 type is 60% while the average trust or thrust of the ship is 5873.5 kg and the average trust coefficient is 0.28. Likewise for the B4-55 type, the average propeller efficiency is around 58.6%, then the average thrust for the ship is 5736.3 kg and the thrust coefficient for the ship is 6.6.]]>
<![CDATA[Study of Rescheduling of MV Alfa Trans Satu Ship Repair Using Critical Path Method (CPM) and Project Evaluation and Review Technique (PERT) ]]>
<![CDATA[Parlindungan Manik]]>;
<![CDATA[Rika Afrodiyanti]]>;
<![CDATA[Muhammad Luqman Hakim]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19043
<![CDATA[The ship repair project must work according to the schedule agreed in the work contract. However, in the process there are often delays between the initial plan and work in the field. The scheduling method is one of the influences on the success of repairs in order to produce efficient scheduling and cost planning. Based on these conditions, this study aims to obtain a new duration and the most optimal cost of crashing through an alternative, namely additional working hours (overtime hours) and additional workforce in the MV Alfa Trans Satu Ship repair project by applying the CPM and PERT methods. Based on the crash duration calculation using the CPM, the most effective and efficient alternative that can be used to accelerate the MV Alfa Trans Satu Ship repair project is by adding a workforce of 32 Person (an increase of 30% from the initial workforce). This acceleration alternative produces a duration below the normal duration, 21 days from the initial 25 days. The probability of success for this project using the PERT method can be completed within 21 days of 98.46%. The percentage increase in costs is only 4% of the normal for critical work, IDR 50,800,000.]]>
<![CDATA[Anchor Analysis of the FPSO Spread Mooring System During Offloading ]]>
<![CDATA[Arif Fadillah]]>;
<![CDATA[Natasyah Dewanti]]>;
<![CDATA[Rizky Irvana]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19422
<![CDATA[FPSO (Floating Production Storage and Offloading) is a moving floating structure to accommodate petroleum exploration results with a frequently used mooring system, namely spread mooring. To make it easier for the FPSO ship to not be able to rotate or even move when loading and unloading due to environmental influences, a spread mooring mooring system is needed with analysis of the mooring stress and anchor lifting force that occurs on the FPSO ship. To determine the anchor lifting power and tension on the mooring, the RAO formula is needed using the Jonswap method, which will give RAO results in response to environmental influences. In this case, the Jonswap method is used to determine matters related to the RAO response to environmental factors by analyzing the FPSO ship model from Maxsurf software, then continuing the analysis using Ansys software. From the RAO response we get the mooring tension and anchor lifting power to the influence of environmental forces. The results of the mooring spread analysis obtained the highest stress value of 6.141 x 105 N, with an anchor lifting force of 4.717 x 103 N.]]>
<![CDATA[Analysis of Drag Reduction Due to Hydrophobic Coating Application by Experiment ]]>
<![CDATA[Rizki Aulia Chandra Putera]]>;
<![CDATA[Muhammad Luqman Hakim]]>;
<![CDATA[Untung Budiarto]]>;
<![CDATA[S. Samuel]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19356
<![CDATA[Nowaday, at least 80% of the world's cargo is shipped via marine transportation modes, so with the amount of shipping activity, the shipping industry produces air pollution of at least 3.3% of global carbon dioxide emissions. The problem is trying to be answered by reducing a fuel use, one of which is through drag reduction. It is estimated that at least 80-90% of the drag that occurs on VLCC (Very Large Crude Carrier), comes from frictional drag that occurs on the surface of the hull. One of method to reducing frictional drag is by applying a hydrophobic coating. The hydrophobic coating has molecular physical properties to repel water. Similar as the water on a lotus leaf that can’t wet the leaves even a little, this phenomenon is called the Hydrophobic effect. Applying the hydrophobic coating on the specimen is done by spraying hydrophobic coating paint. As It seen from the contact angle with value above 900 shows the hydrophobic effect on the coated surface. This research aims to prove whether the application of hydrophobic coating on the hull specimen would give a significant effect such as buoyancy increase and drag reduction characteristics. The research method used is the experimental method by pulling the ship model utilizing the free fall of the load mass to provide a pulling force to the ship model and hydrophobic evaluation of the surface. The experiment was carried out in the Diponegoro University’s hydrodynamics lab with the assumption that the increase in acceleration is a drag reduction. From the test results, it was found that the drag reduction value has a percentage above 25% with the use of light mass variations. In the experiment, there is phenomenon of buoyancy increase characteristic appeared after the appliance of hydrophobic coating.]]>
<![CDATA[Quantitative Evaluation of Draught Survey Through Correlation Test of Quarter Mean: A Case Study on a Coal Bulk Carrier ]]>
<![CDATA[Denny Murdany Muchsin]]>;
<![CDATA[Rahmad Setya Darmawan]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19162
<![CDATA[Complicated draught survey activities both at the data collection stage and the calculation stage, especially at sea, make it difficult for surveyors to accurately inform coal cargo volumes. However, in practice, most coal bulk-carrier surveyors can provide precise information on coal cargo volumes between ports up to a difference of less than 0.5%. This difference is not enough to be used as the only parameter in supervising draught survey activities. More effective monitoring needs to be done so that data reliability can be validated. This study aims to propose a new method of off-site surveillance of draught survey activities through correlation tests with a case study on a bulk-carrier ship less than 10 years old in all coal shipments at one of coal-fired power plant during year 2021. The results of the study show that based on the correlation test of Pearson (2-tailed), Spearman (2-tailed), and Kendall (2-tailed), during coal shipments in 2021 both at loading ports and at unloading ports, the interpretation of the quarter-mean as independent variable is at least strongly correlated with both displacement and displacement corrected for density, while the correlation of quarter mean with both net displacement and constant is not significant (negligible).]]>
<![CDATA[Preliminary Analysis of ROV AF-150114 Movement Using CFD Method (Comutional Fluid Dynamics) ]]>
<![CDATA[Shanty Labora Manullang]]>;
<![CDATA[Agus Setiawam]]>;
<![CDATA[Rizky Irvana]]>;
<![CDATA[Mercy Patanda]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19257
<![CDATA[This research was carried out with the aim of measuring the effect of the body on the fluid flow that occurs around it and measuring the stress that occurs in the ROV AF-150114 design. The research method uses software with a CFD model approach to analyze the stress that occurs in the designs made. In general, there are three stages that must be passed in a CFD simulation: Pre-processing. Solving and post-processing. What is calculated is the velocity, viscosity and pressure of the water flow around the ROV body. The results obtained show that the balance of the ROV body greatly affects the ability to dive and maneuver during maneuvers. The highest pressure/pressure for fluid flow occurs at the ROV AF-150114 speed of 2.5 m/s with a value 39,825 Pa and the value of viscosity is 10,860 Nm/s2. ROV AF-150114 movement test results found that the experiment has a faster movement time speed than the calculation. ]]>
<![CDATA[Analysis of Solar Panel Energy Consumption on Tourist Boats in Labuan Bajo ]]>
<![CDATA[Putra Pratama]]>;
<![CDATA[Mohammad Danil Arifin]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i4.19355
<![CDATA[Renewable energy is alternative energy that is currently being developed. In the current development of transportation, renewable energy is something that must be utilized properly in creating environmentally friendly modes of transportation. The use of renewable energy in the shipping industry plays a very important role in the era of the fossil fuel crisis. Research on this ship uses solar panels to convert solar energy into electrical energy, this energy can be used for ship navigation purposes. The ship's propulsion system uses an electric engine. The electric engine uses a battery that can be recharged when the ship is docked at the port. The solar panels used by Thin Film Solar Cells are lighter and have a high efficiency value. Total energy use for navigation is 799.6 kW. This ship uses 182 Thin Film Solar Cells with a capacity of 100 WP. This ship uses 4 batteries, where 1 main battery is used to drive the electric motor. Meanwhile, for backup energy storage, navigation uses 3 batteries.]]>
