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M. Uswah Pawara
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uswah.pawara@lecturer.itk.ac.id
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ismatech.journal@itk.ac.id
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Gedung B306. Jl. Soekarno Hatta No.KM 15, Karang Joang, Kec. Balikpapan Utara, Kota Balikpapan, Kalimantan Timur 76127
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Kota balikpapan,
Kalimantan timur
INDONESIA
Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Published by Institut Teknologi Kalimantan
ISSN : -     EISSN : 3025518X     DOI : https://doi.org/10.35718/ismatech.v1i1
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation
Focus and Scope Research titles encompassed by this journal include, but are not limited to: Naval Architecture: covering ship strength, Ship Hydrodynamics, Ship Construction, Ship Production Management, Wooden and FRP Ship Materials, Ship Design Innovation, Ship Vibration and Noise, Welding Technology, Fatigue, Sea Transportation, Computational Fluid Dynamic Modeling. Marine Engineering: encompassing Engine Performance, Renewable Fuels, Dual fuel system, Ship electricity, Ship Resistance, Ship piping systems, Ship reliability). Ocean engineering: Marine and Offshore Structures, Coastal Structures and Management, Port Structures and Management, Subsea Umbilicals, Risers and Flowlines (SURF), Ocean Renewable Energy, Marine Instrumentation, Marine Pollution. Mechanical engineering: addressing Tribology, Energy Studies, Engines and Turbines, Heat Transfer, Fluid Mechanics, Lubrication and Wear, Materials Science, Mechatronics, Refrigeration and air conditioning, Pressure analysis, Structural and mechanical design, Renewable energy, Structural mechanics, Thermodynamics, Materials processing, Vibration).
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 35 Documents
 1   2   3   4 
Plan for the Power Requirements of The Lights in the Fishing Boat Room Using LED Lights baya, Nur; Suardi; Wira Setiawan; Mambang Rezalut T; Aung Ye Kyaw
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.877

Abstract

In the process of building a ship, electrical and lighting installation is one of the important components in the construction of a ship that concerns every room on the ship. This study conducted tests on the study of LED lights in the room above the ship. The method used is the zonal cavity method with division in one room into three parts, namely the height ceiling cavity (hcc), height room cavity (hrc), and height floor cavity (hfc) as well as determining the illumination value according to the standards set for each room. And the results obtained for the lamp power at TASA 22 by using the type of lighting with the LED type obtained a lighting electric load of 1.483 Kw. The results of this study provide for the fact that from various other research sources, it is concluded that LED lamps are better than TL lamps.
Analysis of Combination of Natural Fiber Bamboo and Rattan Fiber for Alternative Material in Ship Hull Putri Ananda, Deas
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.880

Abstract

The growing public awareness of the environmental atmosphere has triggered a paradigm shift to design composite materials that are environmentally friendly and energy efficient. Composite materials made from natural fibers have been able to replace metal, steel, and wood because of their ease of use and features. Indonesia has a lot of natural fiber potential, one of which is rattan and bamboo fiber which has significant potential for composites. The use of bamboo and rattan fibers as reinforcement in composite materials has increased rapidly and has undergone a high-tech revolution in recent years in response to the increasing demand to develop biodegradable, sustainable and recyclable materials. In this research, a test made from natural fibers was carried out to find out whether the composite was suitable for use as a substitute for fiberglass on ship hulls. The results of the Tensile test for composites reinforced with natural fibers of bamboo and rattan fiber in the 90° fiber direction obtained the average value of the three experiments with a value of 67,41 Mpa and in the 45° fiber direction the average value of the three experiments was obtained with a value of 57,67 Mpa. The results of the bending test for composites reinforced with natural fibers of bamboo and rattan fiber in the 90° fiber direction obtained an average value of the three experiments with a value of 114,64 Mpa and Dan in the 45° fiber direction obtained an average value of the three experiments with a value of 129,93 Mpa.
Study of The Potential of Palm Oil Empty Core Fiber As Composite Materials for Ship Hull Harefa, Daniel Kurniawan
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.883

Abstract

Palm oil is the largest commodity in Indonesia. Pprocessing of oil palm, leaving 20% to 23% empty palm fruit bunches (EFB). Oil palm empty fruit bunches (EFB) is a collection of fiber left behind after separating the fruit from fresh fruit bunches that have been sterilized. Some researchers use natural fibers as an alternative for making composites. This study aims 1. To determine the tensile strength of the alternative material of palm empty fruit bunch fiber. 2. To determine the buckling or bending strength of the alternative fiber material for empty palm oil bunches. The method used is the tensile and bending test method in the process of mixing the fiber material of empty palm oil bunches in the manufacture of composites. The test results obtained were compared with the BKI composite standard. The volume fraction used in this study was 30% polyester resin and 70% EFB fiber, 40% polyester resin and 60% EFB fiber and 50% polyester resin and 50% EFB fiber with NaOH alkaline treatment for 2 hours. The average tensile stress values obtained for each fraction were 27.372 MPa, 24.168 MPa and 25.875 MPa respectively. The values for the bending stress of each fraction are 144.836 Mpa, 149.059 Mpa and 164.682 Mpa respectively.
Strength Analysis on Yoke Single Point Mooring with Finite Element Method Dianiswara, Anggoronadhi; Rahmatikah, Maya; Huda, Abiyani Choirul
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.889

Abstract

Analysis of stresses and deformations in the Single Point Mooring (SPM) yoke structure using the Finite Element Method (FEM) aims to determine and understand the stress distribution and deformation of the yoke, so that offloading activities comply with safety standards. The finite element method is a numerical modeling technique used to predict the behavior of a system by dividing an object into a number of elements that can be analyzed independently. This study uses 3 geometric models, namely single point mooring yoke geometry aged 0, 20, and 30 years. The results of the analysis will assist in understanding the stresses and deformations that occur in the SPM yoke structure. To simulate the tension of the ship during unloading, tensions of 75, 100, and 125 tons are represented. For each geometry, the greatest stress and deformation values found are 89 MPa for the 0-year model, 89.2 MPa for the 20-year model, 97.1 MPa for the 30-year model, respectively, and 0.08 mm for the 0-year model, 0.10 mm for the 20-year model, 0.11 mm for the 30-year model. This investigation demonstrates that the observed stress levels and deformations comply with safety standards.
Analysis of Effect of Propeller Rotational Speed Variations on Torque and Power Using Computational Fluid Dynamics (CFD) Method Dicky Ocza Tama; Pradisty, Daffa Kurnia; Hosea, Richard Marbun; Gunawan, Gad
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.890

Abstract

The speed on the ship is inseparable from a good propeller design in order to get the optimal thrust generated by the propeller motion. The propeller is a very important part in determining the ship's motion. The propeller itself is a tool used to generate thrust that comes from engine power transmitted through the shaft. Computational Fluid Dynamics (CFD) is a very suitable method for analyzing complex systems that are difficult to solve using manual calculations. With these advantages, CFD is often used to analyze a pattern of a system, one of which is the propeller, which in this study uses variations in flow velocity and propeller speed which can affect the value of the torque and power produced by the propeller.
Numerical Simulation of the Effect of Flow Velocity and Inlet Position on the Pressure Drop in the Exhaust Manifold Maretha Unique Reinauli Turangan
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.891

Abstract

The exhaust manifold, also known as the exhaust header, is an important channel in the combustion chamber of a car. The exhaust manifold's role is to collect exhaust gas from various exhaust channels and direct it to the catalyst and car exhaust muffler for filtering. This research was conducted to see the pressure loss in the exhaust manifold at different speed conditions and different inlet positions on an engine with 4 cylinders. The speed variations used were 0.4, 0.6 and 0.8 m/s while the inlet position variations used were 1 and 3 and 2 and 4. The method used was numerical simulation. Geometry is created in the CAD software, then proceed with creating a mesh and setting boundary conditions. The results obtained show that the greater the flow rate, the greater the pressure drop. Based on the inlet position, positions 2 and 4 tend to have a greater pressure drop than positions 1 and 3 at each of the same speed. The largest pressure drop is 1.5438 Pa at a speed of 0.8 m/s with inlet channels 2 and 4.
Planning Study of Fender Spacing at Semayang Port based on PIANC Tarigan, Baginta Veron; Harahap, Rima Gusriana; Destyariani Liana Putri
Indonesian Journal of Maritime Technology Vol. 1 No. 2 (2023): Volume 1 Issue 2, December 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i2.896

Abstract

Fender is one of the facilities whose role is very important for a dock. With the availability of a fender that can help absorb the energy of the ship's collision with the dock and can reduce the risk of damage to the dock structure and the ship's body. In the case found at Semayang Port Balikpapan, the fender is damaged due to the difference in the dock level with the docked ship. The position of the ship at the highest tide exceeds the limit set on the fender so that there is a difference that makes the fender work not optimally. The purpose of this research is to plan a fender system that is integrated into the dock structure. The method in this research is the finite element method with data processing and collecting primary data by making direct field observations. While secondary data in the form of ship data, wind, currents, and tides are obtained through the BMKG website and related agencies. The selection of the fender system is based on the calculation of the ship's impact energy on the Semayang Balikpapan pier. So that the results of the calculation of impact energy on the Fender amounted to 1844 kNm and obtained the type of fender, namely SCN 800 at 22 m for each fender with many 8 fenders.
Analysis of Generator Power Requirements for Lighting Distribution Using LED Lights on a 500 DWT Sabuk Nusantara Wati, Gusra; Suardi, Suardi; Mubarak, Azhar Aras; Fabila, Nova; Simanjuntak, Lowry Gabriel; Adila, Imam Rifqi; Myistro, Evan
Indonesian Journal of Maritime Technology Vol. 1 No. 2 (2023): Volume 1 Issue 2, December 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i2.1038

Abstract

Sabuk nusantara ship serve as the lifeline of transportation for remote, frontier, underdeveloped, and border islands (3TP), especially in areas devoid of other land and air transportation. These vessels, capable of accommodating up to 500 individuals, connect 3TP-category islands to larger ports, playing a pivotal role in sustaining the economic activities of these regions.This study focuses on the use of LED lights within ship interiors, employing the zonal cavity method. This method divides each room into three segments: the height ceiling cavity (hcc), the height room cavity (hrc), and the height floor cavity (hfc). Illumination values are then determined based on established standards for each specific room.The principal finding reveals that the lighting electricity load for the 500 DWT Pioneer Ship, utilising LED lighting, amounts to 8.74 kW. This research not only addresses technical considerations but also underscores the significance of adequate illumination for passenger comfort and the seamless operation of the ship.By concentrzating on research outcomes, this study provides valuable insights for understanding and enhancing the lighting system on Pioneer Ships. Future steps may involve implementing recommendations to improve efficiency and comfort on such vessels, ensuring the sustainability of the economic and connectivity aspects in regions reliant on these ships.
Design of the electrical system on a general cargo ship with a length of 105,669 meters Naval Architecture, Diva; Suardi, Suardi; Kyaw, Aung Ye; Raditya, Muhammad Yogi; Sitanggang, Syahrul Gunawan; Abdillah, Riza; Handayani, Windah
Indonesian Journal of Maritime Technology Vol. 1 No. 2 (2023): Volume 1 Issue 2, December 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i2.1044

Abstract

This research investigates the incorporation of LED lights and the zonal cavity method in the initial design stage of a cargo-type ship, focusing on efficient lighting for diverse ship zones. The study aims to determine optimal lighting requirements, adhering to industry standards, for zones such as double bottom, maindeck, poopdeck, boatdeck, bridgedeck, navdeck, and emergency conditions. Ships play a vital role in transporting passengers and goods across seas and rivers, necessitating effective lighting systems for safe operations, particularly during nighttime. This paper explores the integration of LED lights and the zonal cavity method in the general arrangement design of a cargo ship. The zonal cavity method is applied to ascertain lighting intensity in different ship zones based on room dimensions, including width, height, length, and area. Illumination values are determined according to established standards for each zone. The cumulative lighting electricity load for various ship zones using LED lights is calculated to identify specific power requirements.The lighting power requirements for the double bottom, maindeck, poopdeck, boatdeck, bridgedeck, navdeck, and emergency conditions are found to be 0.141 KW, 0.75 KW, 1.068 KW, 0.762 KW, 0.671 KW, 0.42 KW, and 0.296 KW, respectively. The total lighting power for all zones is calculated as 3.7776 KW, suggesting the installation of a 4 KW generator for optimal power supply.The application of the zonal cavity method in the planning and design of a cargo ship's lighting system, combined with energy-efficient LED lights, proves to be an effective approach. The results indicate that a 4 KW generator is sufficient to meet the lighting power demands for various ship zones, ensuring compliance with safety standards and technological advancements in maritime lighting.
Modification of Traditional Fishing Boat Outriggers into a Simple Electric Power Plant Nikmatullah, Muhammad Iqbal; Baharuddin, Baharuddin; Zulkifli, Zulkifli; Alwi, Muhammad Rusydi; Sitepu, Andi Husni
Indonesian Journal of Maritime Technology Vol. 1 No. 2 (2023): Volume 1 Issue 2, December 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i2.1050

Abstract

The outrigger is one of the components of the boat attached to the outside of the boat. Outrigger has a fairly vital function because it can make the boat stable when fishermen do activities at sea. This study aims to determine the potential of electrical energy that can be generated in the outrigger. In this study, the outrigger shape was modified so that the water flow could be directed into the outrigger cylinder and rotate the turbine to produce electrical energy. This modification was carried out without eliminating the main function of the outrigger supporting the stability of fishing boats. The electrical energy produced is stored in the battery to be used as a source of electricity for lighting at night. The results of this study indicate that the electrical energy produced by outriggers can be used as a source of lighting for traditional fishing boats. However, further research is still needed to determine the loss of ship resistance with this modification.

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