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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
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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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Articles 42 Documents
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Search results for , issue "Vol. 10 No. 4 (2025)" : 42 Documents clear
Analysis Variation of Concentration and Pickling Time in SA-312 304 on Oxide Layer Thickness Imah Luluk Kusminah; Wiwik Dwi Pratiwi; Aditya Hermansyah; Dika Anggara; Widya Emilia P
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Austenitic stainless steel SA-312 Grade 304 offers good corrosion resistance, but welding can form oxide layers that degrade its performance. Pickling with nitric acid (HNO3) and hydrofluoric acid (HF) is commonly used to remove oxides and restore corrosion resistance. This study examines the effects of varying HNO3 concentration and pickling time on oxide layer thickness. Optical and scanning electron microscopy (SEM) were performed. The optimal result was achieved with 15% HNO3 + 4% HF for 35 minutes, producing a 5.6658 µm oxide layer, while 25% HNO3 + 4% HF for 35 minutes yielded only 3.0082 µm. Results show that proper pickling parameters effectively reduce oxide scale.
Optimization of the Number of Boat Passengers Using the Intact Stability Survival Approach Aditya Dwi Saputra; Sjarief Widjaja; Hasanudin
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Passenger ship accidents in Indonesia’s domestic waters are frequently linked to overloading and stability failures, particularly on non-classed vessels with open decks. This study proposes an analytical method to determine the optimal passenger capacity based on intact stability survival criteria. The method begins with hydrostatic calculations of the hull to generate the KN curve, which is then adjusted for the mass distribution of the vessel and passengers to produce the actual GZ curve. Optimization is performed iteratively by comparing the calculated righting moment (Mst) with the regulatory criterion moment (Mkr), following both BKI and ISO 12217-1:2015 standards, while also accounting for the limiting condition at the downflooding angle. A case study on a V-hull boat (L = 10.5 m; B = 3.2 m; H = 1.4 m) reveals a substantial divergence between the two regulatory frameworks. Under light displacement (LWT = 1 ton), ISO permits up to 138 passengers, whereas BKI limits capacity to only 17. Conversely, at a high LWT of 8 tons, ISO does not allow any passengers, while BKI still permits approximately 29. Validation against Maxsurf software demonstrates excellent agreement (R² = 0.9993), confirming the reliability of the developed program. These findings establish that the proposed method is both valid and practical, offering a technical guideline for determining the safe passenger capacity of non-classed open-deck vessels operating in domestic waters.
Growth Performance and Osmoregulation of Vaname Shrimp (Litopenaeus Vannamei) with Cultivation Media Engineering Aldy Eka Wahyudi; Abdul Rahem Faqih; Sri Andayani
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Production of white shrimp (Litopenaeus vannamei) in 2024 is targeted by the Ministry of Fisheries and Marine Affairs to be increased by producing 2 million tons / year. However, in fact, in 2022 white shrimp production is 1.09 million tons, so to achieve the target, new technology and innovation are needed. The obstacle experienced with freshwater cultivation is the low mineral that plays an important role in the growth of white shrimp. To be able to cultivate white shrimp in fresh water, it is necessary to first conduct a study on the manipulation of aquaculture water with freshwater, salt and bittern components as mineral sources. The purpose of this study is to test the combination of components of artificial water media for white shrimp farming and analyze the mineral content. The study will be conducted from March to April 2024. The method used is an experimental method with Completely Randomized Design (CRD). Data collection is carried out by field observation and literature study. The research procedures carried out were bittern and salt collection and white shrimp sampling, media preparation, mineral test on water as culture media, white shrimp stocking, white shrimp rearing, morphology and survival rate tests and viscosity tests to review osmoregulation in white shrimp and data analysis. Data analysis was performed using Canonical Correlation Analysis (CCA) with PAST 4.03 software. The mineral content produced is directly proportional to the amount of dose given. The best dose of bittern in this study is in treatment C with a dose of 15 ml which has a calcium content of 45.2 mg/L, magnesium 155 mg/L, and potassium 73.89 mg/L.
The Influence of Wet Scrubber on the Performance Efficiency of Heat Exchanger at Gasification Based Waste to Energy Power Plants Regina N. Lumbantoruan; Damora Rhakasywi; Fahrudin; Fazli Iqbal Pasha; Putty Fauthyda Z. H.; Firmansyah
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

This research investigates the influence of wet scrubber installation on the performance efficiency of a shell and tube heat exchanger operating in a gasification-based Waste-to-Energy (WtE) power plant located in Surakarta, Indonesia. The study was conducted using a quantitative comparative approach over a four-month operational period, comparing system performance before and after the application of a wet scrubber. Three key parameters such as heat exchanger effectiveness, fouling factor, and pressure drop were analyzed to determine the impact of the gas cleaning system on thermal performance. The results show that the fouling factor decreased from 0.003 to 0.002 J/h·m²·°C, indicating cleaner heat transfer surfaces. Meanwhile, the pressure drop on the tube side reduced from 130.374 Pa to 46.134 Pa, reflecting smoother gas flow and lower mechanical resistance. Consequently, heat exchanger efficiency increased dramatically from 34% to 83%, signifying a substantial improvement in heat transfer capability. These findings confirm that the wet scrubber effectively minimizes tar and fine particulate deposits in syngas, improving heat transfer efficiency, operational stability, and equipment lifespan. The integration of wet scrubbers is therefore proven to be a vital enhancement for optimizing gas cleaning and energy conversion processes in Waste-to-Energy systems.
Probability of Deck Wetness and Bottom Slamming due to Height and Wave Directions on Klotok Boat Andi Mursid Nugraha Arifuddin; Silvia Salsa Putri; Muhammad Uswah Pawara; Harlian Kustiwangsa; Jusma Wahidah; Fernanda Wahyu Pratama; Cindy Lionita Agusty
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Sailing safety is an important aspect that must be considered to ensure the safety of the crew and passengers. One aspect that affects sailing safety is the probability of deck wetness and bottom slamming on each ship. A research object is a traditional wooden boat hull operating on the Penjam - Balikpapan route that transports passengers and vehicles. The aim is to provide information regarding wave conditions that support the safe operation of klotok ships. In this study, the variations in wave arrival directions used are 45°, 90°, 135° and 180° with a ship speed of 8 knots, and variations in wave height are based on the sea state approach, namely sea state 1 (0.488 m), sea state 2 (1.006 m), sea state 3 (1.433 m), and sea state 4 (2.012 m). Furthermore, the m0 value is obtained as an important component to measure the occurrence of deck wetness and bottom slamming through an approximation formula and validated with the NORDFORSK 1987 criteria. The results of the study indicate that the highest probability value of deck wetness occurs in the direction of wave arrival 180° with a wave height at sea state 4 (2.102 m). While the highest probability value of bottom slamming occurs in 2 variations of wave arrival direction, namely 135° and 1800. The wave height that must be considered in the direction of wave arrival 135° is 1.433 m and 2.012 m. Meanwhile, if the direction of wave arrival is 180°, the wave height that must be considered is 1.006 m, 1.433 m, and 2.012 m. With initial information on the potential for deck wetness and bottom slamming, it can be recommended that ships will tend to sail safely if waves arrive at 450 and 900 degrees, while immediately avoiding ship movements in the direction of waves at 1350 and 1800 degrees, especially at extreme wave heights. This condition will occur if the gravity concentration position is in the forecastle position. Meanwhile, if the gravity concentration position is at the stern, the passenger room and vehicle deck show a probability value that tends to be safe.
Assessment Seakeeping Performance And Operability Model A Fast Craft Using Axe Bow Romadhoni Romadhoni; Budhi Santoso; IK.A Pria Utama
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Hull shape affects the characteristics of movement and operability ship itself. Operability ship is at sea the amount of time during which the structure is capable of operating in accordance with the criteria established and high correlation to wave in which criteria will be exceeded. In the research will be carried out analysis of three degrees of freedom of movement and pitch roll heave against the ship model-type crew boat planing hull and AXE Bow size 38 meters on a regular wave with future parameter (heading, speed, mass body, radius gyration, damping and etc.) are presented in the form of graphic images Response Amplitude Operator (RAO). Motion prediction in regular waves has been performed by running a mathematical model developed on the basis of a 3-liner potential theory, and further transformed into the motion in irregular waves through the spectral analysis. The calculation is performed with the help of software computing HydroSTAR Ver.7.1 will be compared with Maxsuft software. This latter analysis was conducted for all level of intensities by referring to the wave scatter data for Natuna Sea, and then correlated to the operational criteria. Results of evaluation exhibits that at full load, operational crew boat could be carried out at significant wave heights Hs ranging from 0.245m up to 3.745m, which has a proportion of occurrence as much as 97.02% to model planing hull and as much as 98.72% to model AXE Bow. Crew boat operation would not be safely conducted at wave heights higher than those, in which their occurrence in Natuna Sea is only 2.720%, model hull planing and is only 0.14% model AXE Bow
Analysis of the Implementation of the Port Concession between KSOP Class I Sorong and PT Pelindo Regional 4 Sorong Oktovianus Christian Karubaba; Dodik Widarbowo; Agus Leonard Togatorop; Hendra Poltak; Komang Hedi Pramana Adiputra
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

This research aims to analyze the implementation of concession policies at Sorong Port based on Government Regulation Number 31 of 2021 and Minister of Transportation Regulation Number 48 of 2021, focusing on the role of the Sorong Class I Port Authority Office (KSOP), PT Pelindo Regional 4 Sorong, and port workers. This study uses a qualitative approach with data collection techniques through interviews and field observations. The results of the study show that the implementation of concessions has provided clarity on the role between regulators and operators, but the implementation has not been optimal because there is still a gap between administrative policies and operational realization in the field. The limitations of technological infrastructure, human resource capacity, and differences in orientation between KSOP and Pelindo are the main inhibiting factors. Nevertheless, concessions have a positive impact on improving service efficiency, operational order, and the implementation of safety standards. Obstacles such as the absence of uniform Standard Operating Procedures (SOPs) and limited port facilities indicate the need for an adaptive approach that takes into account the local characteristics of the eastern region of Indonesia. This study concludes that the success of concessions at Sorong Port depends on policy harmonization, institutional coordination, and strengthening the capacity of human resources. With the support of central government policies and synergy between regulators, operators, and labor, Sorong Port has the potential to become an efficient, modern, and sustainable integrated port management model in eastern Indonesia.
Design Development Study Of Mini Trash Skimmer Boat A22 With Packing Technology In East Flood Canal Amelia Berliana Antonia Wetik; Augustinus Kindangen Pusaka
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Garbage is a significant source of water pollution, particularly in the East Flood Canal (BKT) river. This study develops the design of the Mini Trash Skimmer Boat A22 as a practical solution for waste collection in polluted waters. The vessel adopts a catamaran hull to ensure stability and efficiency in skimming operations. With principal dimensions of 3.5 m in length, 2 m in breadth, and 0.8 m in depth, it accommodates a waste bin of approximately 0.4 m³. A conveyor system integrated with hydraulic press technology is applied to compact garbage, thereby increasing storage capacity. Resistance analysis using the Holtrop method in Maxsurf shows that at a speed of 21.26 knots, the vessel experiences a maximum resistance of 8.1 kN, corresponding to an engine power requirement of 8.83 kW. The boat is further equipped with an autonomous navigation module to support operational efficiency and powered by Lifepo4 lithium batteries with one-hour endurance. The results highlight that incorporating packing technology enhances waste-handling capacity, while the combination of catamaran stability and automation makes the Mini Trash Skimmer Boat A22 a promising approach for reducing water pollution in urban waterways.
Determination of Standard Time and Man Hours for Welding Process in Barge Repairs Mochammad Falah Adjidinata; Intan Baroroh; Tri Agung Kristiyono; Ali Azhar; Akhmad Basuki Widodo
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Shipyards are facilities that play an important role in building and repairing ships. One common type of repair is replating, which means replacing damaged hull plates with new ones. This process relies heavily on welding, which needs skilled workers and a lot of electrodes. A frequent issue in the field is the challenge of estimating how many electrodes are needed, which often results in wasted materials, increased costs, and delays in completing the work. This study seeks to calculate the electrode needs, the time required for the work, and the man-hours needed for ship replating. The research involved a review of existing literature and a field study. The welding process used the SMAW method with E6013 electrodes, 160A current, and 2G and 3G welding positions. Each welding position involves three stages: root, filler, and capping. The average welding speed data for every 1000 mm is used to calculate the actual welding length in the replating process. The results showed that the average welding time for the 2G position was 39,277.89 minutes, while for the 3G position it was 17,657.54 minutes. The total electrode requirement was 1,619.69 kg, which is equal to 324 boxes, with an estimated cost of Rp. 40,240,800.00. Additionally, the number of workers needed is 27, with a total of 948.924 man-hours over a period of 5 days. In conclusion, organized calculations of electrode needs, time, and man-hours can help improve the efficiency of replating work, reduce waste, and aid in project management planning in shipyards.
Analysis Of Paint Material Requirements in the S-80 Tugboat Hull Painting Project Riandika Putra Rama; Intan Baroroh; Ali Azhar
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 4 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i4

Abstract

Calculating the paint requirements is a lengthy and meticulous process. Therefore, the company needs to calculate the painting requirements correctly and accurately. The painting process is one of the processes in shipbuilding. The coating process involves painting or layering ship steel plates with special paint to protect the vessel. This research aims to estimate the material and cost requirements for the S-80 tugboat construction project by calculating the needs, coating with 2 different products so that a comparison of materials and costs can be made, namely International and Nippon Paint. The amount of paint needed is determined based on the surface area of the underwater and topside hull of a 26-meter tugboat. This study applies a quantitative method, so resulting in final outcomes presented in numerical form. According the research, he total coating needs for the hull of the ship for the bottom part using the International brand is 111,6 L and for the Top Side is 59,43 L, while for the Nippon Paint brand, the Bottom part is 64,5 L and the Top Side is 57,6 L. For the coating process, the total cost for the bottom and topside areas with the International brand amounts to Rp31.702.000. Meanwhile, for the Nippon Paint brand, the cost for the bottom and topside areas is Rp11.238.000 in total.

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