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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 1,114 Documents
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Conversion of High Speed Landing Craft Boat for Passenger into High Speed Landing Craft Boat for Ambulance Eko Prayetno; Alde Vio Verandi; Islam Uzri H.A; Risandi Dwirama Putra; Deny Nusyirwan
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4996

Abstract

The Riau Archipelago is one of the provinces that geographically consist of 1700 islands surrounded by sea, both small and large, with a percentage of 98% sea and 2% land. So, to support the minimal health facilities on the Riau Archipelago, an Ambulance Boat is needed to mobilize patients to hospitals with better facilities. In this study, it aims to modify the design of the High Speed Landing Craft Boat Passenger to become an Ambulance Boat with a length of 12 m, a width of 3 m, a height of 1.2 m, and a draft of 0.6 m. Then perform technical calculations including hull shape coefficient analysis, stability, seakeeping, resistance, speed, ship power, and Motion Sickness Incidence (MSI) analysis. From MSI analysis with ISO 2631 parameters, the wave heading is divided into 5 sections: 00 (Following Seas), 450 (Stern Quartering Seas), 900 (Beam Seas), 1350 (Bow Quartering Seas), and 1800 (Head Seas). The value MSI is obtained after carrying out a comprehensive analysis, the results are depicted in the MSI chart for sea state 1 calm (0-0.1 m) and sea state 2 smooth (0.1-0.5 m) conditions with the following wave directions, waves coming from the side (beam seas), and waves coming from the front (head seas).
Design and Fabrication of 6 Meter Fiberglass Boat for Coastal Water Tourism in Batam Hendra Saputra; Danang Cahyagi; Veryawan Nanda Perkasa; Dedi Purnama; Oxa Nurmannsyah; Rangga Saputra; Regita Ferari; Faaza Ibnu Al Fauzy; Muhammad Fadillah
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4997

Abstract

A tourist boat is one of the amenities frequently utilized in coastal water tourism activities in Batam. Boats used for tourism are frequently used for fishing or simply to take in the beauty of marine tourism. Thus, one of the requirements that must be developed for local tourism is the availability of boats for water tourism. The goal of this research is to create a design and prototype for a six-meter water tourism boat that can serve as a public reference within the same case study. Because of its advantages in terms of cost and readily available materials, fiberglass was selected as a material for design and fabrication. Because of its benefit of being a simple fabrication process, the fiber reinforced plastic method was also selected for use in the process. A six-meter fiberglass boat prototype was created through a multi-phase process that began with design, moved on to hydrostatic and power requirement prediction analyses, and ended with mold based fabrication. The study concludes that 40 horsepower (29.5 kW) is needed to power a 6-meter fiberglass boat that can accommodate five people and reach a maximum speed of 25 kN. Five to seven layers of fiberglass were used to successfully complete the ship fabrication process.
Implementation of Kaplan Type Ducted Propeller on Hydrodynamics of Offshore Supply Vessel (OSV) Gedhe Angkoso Nur Sofa Sakti; Arif Winarno
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4998

Abstract

When operating at sea, a reliable ship must meet the planned service speed using a propulsion system. One type of propulsion system used is a ducted propeller, which is a type of propeller equipped with a channel in the form of a foil that surrounds the propeller to form a tube (nozzle). This nozzle has the ability to increase the value of thrust and torque, so that its application can increase thrust and torque compared to a propeller without a nozzle. This study aims to determine the application of the kort nozzle with MARIN foil nozzle types 19A, 22, 24 on the Ka-40 propeller on the Offshore Supply Vessel (OSV) ship using the Computational Fluid Dynamic (CFD) method. This study obtained results from all models with the model with the highest thrust force is the 19A nozzle model with a value of 367,413.41 N, while the model with the lowest thrust force is model 24 with a value of 356,314.9 Nm. From these results, it can be concluded that the relationship between the length of the kort nozzle and the thrust force is inversely proportional, that is, the greater the length of the kort nozzle used, the smaller the thrust force value produced. Likewise, the relationship between the length of the kort nozzle with torque is also inversely proportional, that is, the greater the length of the kort nozzle used, the smaller the torque value produced.
Reliability of Jacket-Type Structure Considering the Reserve Strength Ratio (RSR) Brigitta Violyna El Tito; Rudi Walujo Prastianto; Daniel Mohammad Rosyid
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.5000

Abstract

The projected demand for energy globally will continue to rise by 45% by 2030, with an average growth rate of about 1.6% per year. Oil and gas are estimated to fulfil about 80% of the world's energy needs. One facility that supports oil and gas exploitation is an offshore structure of the jacket-type platform. The challenge in building a jacket platform is the reliability of the structure. Offshore structures are designed to withstand extreme wave loads that can cause the collapse of individual components or the entire structure. This paper aims to analyze the reliability of the structure with the ultimate limit state. The author performs an ultimate strength analysis using the Nonlinear Pushover Analysis method to obtain the Reserve Strength Ratio (RSR) and a reliability analysis using the Monte Carlo Simulation (MCS) method. This analysis shows that the RSR minimum of 9.33 occurs with a 135° loading direction. The MCS results show that the Jacket platform has a high level of reliability of 0.99997, which fulfils the minimum required reliability for offshore structures.
Experimental Investigation of Citronella Oil as Bioadditive in Biodiesel Fuel on Diesel Engine Performance, Vibration and Emissions Beny Cahyono; Semin Cahyono; Ifta Chariska Putri
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.5002

Abstract

The depletion of fossil fuels is one of the reasons for using alternative fuels such as biodiesel fuel. However, biodiesel has disadvantages such as higher density, lower heating value, high fuel consumption, and high nitrogen oxide (NOx) content compared to diesel. To improve this, it can be done by increasing the cetane number of the fuel by adding citronella (C) oil as a bioaditive. The purpose of this study is to determine the characteristics of biodiesel fuel after adding citronella oil, and to determine the effect of citronella oil addition on engine performance, vibration, noise and emissions. This research was conducted experimentally by adding citronella oil with variations in composition of 0.5%, 0.75%, 1%, 1.25%, and 1.5% of the volume of Biodiesel fuel (B30). The fuel was tested on a Yanmar single-cylinder diesel engine. Experimental results showed that the cetane number increased with the addition of citronella composition, with the highest cetane number in B30+C 1.5% fuel, which increased by 25.9% when compared to the cetane number of B30. From the performance test results, the diesel engine experienced an increase in performance in the form of power, torque, BMEP, as well as a decrease in vibration and noise when compared to B30 fuel. The lowest NOx emissions occurred at 2000 RPM with the largest load produced by fuel that had added citronella 1.5% with a decrease of 21.6% when compared to B30 fuel.
Rip Current Hazard in Klayar Beach, Pacitan, Indonesia: Inferred from Fluorescent Dye and UAV Wahyudi; Hendy Fatchurohman; Verent Priscillia Rahayu Natasya; Sujantoko; Leo Eliasta Sembiring
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.5003

Abstract

South coasts of Java have a unique landscape that exhibits exotic and phantastic natural view which is very attractive as tourist destinations. Therefore, coastal tourism potential in this area is very promising. Despite the fascination of such areas, the existence of rip current in the beach can be very hazardous to the visitors. Klayar Beach (KB) is one of the most popular recreational beaches in Pacitan Regency, East Java Province, Indonesia. However, KB poses a hazard due to rip currents. This paper presents the result of field observations of rip currents utilizing fluorescent dying and unmanned aerial vehicle (UAV). We used UAV multirotor DJI Mavic 2 Zoom with video camera to take and monitor aerial photo and video of rip current flows. The result of this study proves that there is rip currents in KB. It also reveals that the maximum velocity reaches 0.8 m/s, with average width of 11 m, and total length 99.99 m. The rip current type in the KB is defined as headland boundary controlled and predicted as a permanent rip. The use of combined uranine and UAV to investigate rip current in this study was a very effective way. It is suggested to use this approach to improve people understanding about rip current hazard for promoting beach safety.
Conversion of Waste Cooking Oil Combined With Corn Oil Into Biodiesel Using the Transesterification Method Suardi; Faisal Mahmuddin; Syerly Klara; Wira Setiawan; Muhammad Uswah Pawara; Jumardi
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5039

Abstract

This research endeavors to explore a novel alternative fuel source by combining waste used cooking oil and corn oil to create a biodiesel blend. The study addresses two main objectives: first, to investigate the properties of used cooking oil biodiesel with the addition of methanol and NaOH catalysts, and second, to assess engine performance using the biodiesel blend. The experimental approach employs transesterification, varying the catalyst quantity during biodiesel production. Preceding diesel engine testing, properties such as viscosity are assessed, revealing improved values meeting Indonesian National Standards post-catalyst addition, albeit with a decrease in calorific value. Engine performance is then evaluated, demonstrating that as the catalyst content increases, torque and thermal efficiency decrease, while specific fuel consumption (SFC) rises. Notably, the study concludes that a higher catalyst ratio aligns fuel properties closer to government-set standards. The most favorable engine performance is observed in the B50 sample with a catalyst variation of 1000 ml of methanol and 25 g of NaOH, showcasing superior torque, thermal efficiency, and opacity values compared to higher catalyst variations. This research underscores the importance of catalyst optimization in achieving an environmentally friendly biodiesel blend with enhanced engine performance.
Fire Drill Performance Evaluation Model Onboard RoRo Passenger Ship Bagiyo Suwasono; Sudirman; Fajar Gunawan
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5040

Abstract

Fire accident onboard RoRo (Roll on/Roll off) passenger ferry notoriously indicates intense symptoms of human, technical and organisational issues. In some cases, the more complex the fire's origin, the more challenging the crew would handle handling, suppressing, and putting out the fire. The crew response plays a significant role in the success of firefighting onboard. The research focuses on evaluating the effectiveness of fire drill performance by developing an evaluation model based on the cognitive model and analytical network process. The model was developed to overview crew performance and consistency in conducting fire drills on board the roro passenger ship. The questionnaire is developed to obtain crew perspective and awareness of fire risks. The analytical network process (ANP) model is utilised to identify crew preference during fire drills. The result of decision-based research identified significant issues that occurred in every step of cognition. Competency and proficiency of the crew, along with continuous training and familiarisation, were the main issues in improving effectiveness in firefighting. The results of the analysis were resourceful evidence to enhance audit and supervision for the emergency preparedness system. In addition, it is also a reference for developing further training models to improve crew overall performance in firefighting.
Assessment of Occupational Safety Risks in Ship Repairs at the Fisheries Service Employees Cooperative Shipyard (FSECS) Ilham Sudrajat; Fis Purwangka; Budhi Hascaryo Iskandar
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5041

Abstract

Various activities at the FSEC shipyard found many potential dangers in each element of work activity. The FSEC shipyard requires risk assessments and critical points in each ship repair activity to overcome these problems. So, research is structured with the aim; a) identify and describe repair activities at FSEC yards; b) determine critical points along the repair, along with sources of danger and consequences. This research data analysis uses the FMEA method to identify each type of work and risk assessment. Based on the identification that are assumed to be crucial in the flow of ship repair activities, 26 activities were recorded including; a) preparation 10; b) process 10 and; c) post ship docking 6. Based on 26 activities, a total of 40 ships were recorded as sources of danger from docking preparations, ship docking processes and post-ship docking. Based on the results of data processing and analysis, it was concluded that 6 activities were included in the critical risk category, including; holding the ship as it is being lowered, the ship entering the docking area, removing the remaining barnacles, turning on the grinder, grinding the upper and lower hull of the ship and getting on and off the ship.
Escalation of Capacity and Quality PS60 Casting Production by Gating System Modification Widya Emilia Primaningtyas; Dhika Aditya Purnomo; Silvi Arianti; Kiki Dwi Wulandari; Benedicta Dian Alfanda; Risa Nurin Baiti
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5042

Abstract

A ship tank’s ventilation pipes protector, called PS60, is produced by an investment casting process using CF8M material. Shorter time production for PS60 products, occurred due to the rise of PS60 demand, resulting non class casting product quality. Reported that 15% of PS60 defective products were shown from each production group. Porosity defects are the most common defects found. Recalculating riser’s, runners’s, and ingates’s dimensions, then remodeling designs a mold gating system done in order to reduce the percentage of defective products and increase production capacity. Remodeling gating system and casting simulation done by ProCast 2018 software using New Advanced Porocity Module (NAPM). The casting simulation output was porosity defects location and percentage, which were further analyzed. The product produced using a mold Gating system with a new layout, had 314.73 cm3 of empty part in the mold cavity which was identified as a porosity defect which was 4.58% of the total volume of the cast product. The total value of the porosity after remodeling decreases by 2.39% from the existing product. 93.3% of the cavity inside the product is categorized as macroscopic porosity defects that are centralized in the riser and pouring basin areas, where in the casting product finishing process, these areas will be removed. Modification of the Gating System in PS60 mold escalates twice of PS60 capacity production than the origin.

Page 63 of 112 | Total Record : 1114

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