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INDONESIA
KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan
Published by Universitas Diponegoro
ISSN : 18298370     EISSN : 23019069     DOI : 10.14710/kapal.
Core Subject : Science,
Earth & Planetary Sciences
Jurnal ini merupakan Jurnal Ilmiah untuk mengembangkan ilmu dibidang Ilmu Pengetahuan & Teknologi Kelautan. Jurnal ini diterbitkan oleh Teknik Perkapalan Universitas Diponegoro 3 (tiga) kali dalam 1 tahun pada bulan Februari, Juni dan Oktober.
Arjuna Subject : -
Articles 408 Documents
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Back-matter V. 18, No. 3 Andi Trimulyono
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 3 (2021): October
Publisher : Department of Naval Architecture - Diponegoro University

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Cover V. 18, No. 2 Andi Trimulyono
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

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Front-matter V. 18, No. 2 Andi Trimulyono
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

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Collision Analysis Of A Self Propelled Oil Barge (SPOB) Using Finite Element Method Amalia Ika Wulandari; Rodlian Jamal Ikhwani; Suardi suardi suardi; Ratna Septati Yani; Andi Nadia Himaya; alamsyah alamsyah
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.45417

Abstract

Many ship accidents at sea cause oil spills that can pollute the sea especially ships carrying crude oil that experiences a collision, for example SPOB ship. SPOB is a ship that transports crude palm oil in Indonesia. Basically, the ship is collided with a jetty due to ocean waves hitting the hull as consequently the ship hull experienced a deformation. This research will be carried out on SPOB ships that experienced a collision with a jetty using two variations of the model, namely the jetty with fenders and without fenders with variation of speed. This study aims to determine the stress and deformation that occurs in the hull when experiencing a collision with a jetty. The method used in this study is a nonlinear method using Ansys. The results reveal that increasing speed of the ship is in line with stress and deformation values.
The Effect of Heat Input on Welding Combination of GTAW and SMAW SA537 Material on Mechanical Properties and Microstructure Tarmizi Tarmizi; Nabil Aga Hananda; Irfan Irfan
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.45028

Abstract

The combination of GTAW (Gas Tungsten Arc Welding) and SMAW (Shield Metal Arc Welding)processes on SA537 Class 2 carbon steel using variations of heat input is the main choice to get thebest quality welded joints. This research aims to joint SA537 Class 2 material using the GTAW andSMAW process with heat input variations to get the best joint and determine the joint resultsmechanical properties and microstructure analysis. The experimental method uses a combination ofGTAW and SMAW processes with a single V butt joint design, groove angle of 60o, root face 2 mm androot gap of 4 mm as many as 7 passes, and variations in heat input of 2.5 kJ/mm, 2.8 kJ/mm and 3.2kJ/mm. According to ASME section IX, the mechanical testing results showed that the specimen witha heat input of 2.8 kJ/mm gave optimum results with the highest tensile strength of 480 MPacompared to the other two specimens, and there were no cracks when tested for bending The higherthe heat input, the greater the decrease in the percentage of ferrite. Using a heat input of 2.8 kJ/mm inthis study provides a weld result with better mechanical properties and microstructure than the useof heat input of 2.5 kJ/mm and 3.2 kJ/mm.
Fire-safe Distance Between Ro-Ro Space Openings and Life-saving Appliances Pierrick Mindykowski
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.44753

Abstract

As part of the FIRESAFE II project commissioned by the European Maritime Safety Agency a study was performed to determine a safe distance between side openings and Life-Saving Appliances (LSA) in ro-ro spaces to keep them available and usable for evacuation. The study utilised analytical calculations and CFD simulations. Two exclusion zones, where LSA should not be placed, were defined. The first zone relates to LSA within an embarkation station and includes the full vertical side of the ship, 6 metres forward and aft the opening. The second zone, without presence of passengers, consisted of the exclusion zone extending 6 metres around the opening. The results presented in the paper have been implemented in the International Maritime Organization interim guidelines for minimising the incidence and consequence of fires in ro-ro spaces and special category spaces of new and existing ro-ro passenger ships.
Study of QR Code Technology Application for Monitoring Activity of Ship Planned Maintenance System Sufian Imam Wahidi; Triwilaswandio Wuruk Pribadi; Hajid Mulya Rahman
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.45507

Abstract

System and outfitting in a ship vary with different brands and treatment methods. These conditionscan be an issue if the operator has undisclosed damages due to a lack of knowledge about the ship'smaintenance records. An electronic planned maintenance system (ePMS) is a system that is currentlyused to collect the ship maintenance recorded data. However, the use of ePMS still has drawbacks. Theappearance is less interactive, available information about the outfitting used in ships is limited, andthe operator needs to search the outfitting manually with scrolling. This research aims to study theapplication of QR code technology for monitoring maintenance activities of ship systems and outfitting.This research was conducted based on field observation of ePMS, designing a QR code module for theePMS application, developing algorithms, and creating programs for website and android basedapplications. In addition, trials of the application and calculation of the costs incurred for implementingthe QR code method are also carried out. The distribution of questionnaires for practitionersaccompanied the trial. Based on that, the implementation of QR code in ePMS can be applied, easy touse and facilitate the supervision of ship system and outfitting activities with a mean score of 4.39 orequivalent to strongly agree. The addition of the QR code module is costed IDR120,426,000.00, wherethe process of recognizing and searching for ship systems and outfitting to view maintenance plansand maintenance history on the ePMS application is enough by scanning a QR code.
Front-matter V. 19, No. 1 Andi Trimulyono
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 1 (2022): February
Publisher : Department of Naval Architecture - Diponegoro University

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Comparison of the Ultimate Strength with and without Hatch Opening Subjected to Longitudinal Bending Indah Melati Suci; Muhammad Zubair Muis Alie; Ganding Sitepu
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.45097

Abstract

The hatch opening has function to enter the load into the cargo hold. One of the ship types like this is Bulk Carrier. The hatch opening must be designed in suitable way because its influence to the ultimate strength since the hull girder under longitudinal bending moment. The application of the hatch opening on the ship’s deck should be considered for the ship design criteria. The objective of the present study is to analyze the ultimate strength with and without hatch opening subjected to longitudinal bending moment. The cross section of box girder is used to analyze the effect of hatch opening to the ultimate strength. This cross section of box girder is adopted for simple calculation. The application of Multiple Point Constrained (MPC) is adopted to analyze the box girder under longitudinal bending moment. The cross section of box girder is assumed remained plane during progressive collapse. The material such as density, yield strength, elastic modulus and poison ratio are homogeneous. The type and dimensions of the stiffeners are also identic. The only one of the differences for the stiffener is number due to the hatch opening at the top of the box girder. It is found that the ultimate strength of the box girder with hatch opening is smaller than without opening one. 
Back-matter V. 19, No. 1 Andi Trimulyono
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 1 (2022): February
Publisher : Department of Naval Architecture - Diponegoro University

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