Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan
Dalam Pengembangan dan pengolahan SDA maritim memerlukan kerjasama multidisiplin ilmu, dimana kesemua disiplin ilmu tersebut berperan besar dalam menjadikan Indonesia sebagai poros maritim dunia. Oleh karena itu diperlukan inovasi dan sinergi untuk menghasilkan riset tentang teknologi kelautan oleh perguruan tinggi, lembaga-lembaga penelitian dan industri dapat memberikan kontribusi terhadap issue tersebut. Tujuan Zona Laut adalah sebagai wadah menyalurkan pemikiran, ide-ide cemerlang dan konstruktif komprehensif sehingga menjadi bagian usulan-usulan solusi bagi kemajuan pembangunan Sumber Daya Kelautan Indonesia. Topik-topik yang dapat diterbitkan Zona Laut ini adalah: 1. Teknologi dan Rekayasa Bangunan Lepas Pantai 2. Desain Produk Bangunan Perikanan dan Kelautan 3. Manajemen Transportasi Laut dan Aplikasi Teknologi Pelayaran 4. Energi Kelautan Terbarukan 5. Sistem dan Pengendalian Kelautan 6. Material Maju kelautan 7. Rekayasa dan Manajemen Kepelabuhanan serta Pengembangan Sumber Daya Pesisir 8. Oseanografi dan Keteknikpantaian 9. Kebencanaan Pantai dan Lingkungan Laut Jurnal ini diterbitkan oleh Departemen Teknik Kelautan, Fakultas Teknik, Universitas Hasanuddin pada bulan Maret, Juli dan Nopember setiap tahun. Naskah yang telah disetujui untuk diterbitkan telah ditinjau oleh pengulas dan abstrak bebas untuk diunduh melalui situs web kami.
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<![CDATA[Freeboard and Trim Measurement: a Case Study of Landing Craft Tank Conversion to Ship Power Plan ]]>
<![CDATA[Suardi Suardi]]>;
<![CDATA[Wira Setiawan]]>;
<![CDATA[Samsu Dlukha Nurcholiq]]>;
<![CDATA[Alamsyah Alamsyah]]>;
<![CDATA[Andi Mursid Nugraha Arifuddin]]>;
<![CDATA[Amalia Ika Wulandari]]>;
<![CDATA[Muhammad Uswah Pawara]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.27886
<![CDATA[In this research, the ship power plan which is the result of a conversion from a landing craft tank is designed to meet the electricity needs in areas affected by a disaster or electricity crisis. So far, the government has chartered a similar ship from Turkey which is used to meet electricity needs in Indonesian areas which have been affected by the disaster and electricity crisis. This ship is modified to carry an electric generator which can later be sent to areas that need it. Two main focuses are the goal of this research, the first is to find the value of the freeboard and the second is the trim of the ship after the redesign. To achieve this goal, in this study a numerical calculation method was used to calculate the freeboard and trim values according to applicable standards. The results of the analysis show that the freeboard value is still safe, with the actual freeboard value being greater than the required freeboard (0.8 m > 0.44 m). For ship trim, the bow trim condition is obtained with a smaller LCG-LCB difference than the 0.05% LPP value (0.912 < 0.923). By looking at the results of these measurements, the condition of the ship's freeboard and trim is still in a fairly good category even though it has been converted from a landing craft tank to a ship power plant. This study can provide a reference for ship design before converting the actual ship so that it can carry out trim and freeboard tests to prevent build failures.]]>
<![CDATA[Analisis Perubahan Karakteristik Aliran Fluida sekitar SPAR-3VP Terhadap Variasi Kecepatan Aliran di Kondisi Ekstrim ]]>
<![CDATA[Galy Rakaziwi]]>;
<![CDATA[Fuad Mahfud Assidiq]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31535
<![CDATA[This research discusses the SPAR offshore wind turbine, a floating foundation turbine used for wind power generation in the deep sea. SPARs are designed with a large-diameter vertical floating cylinder weighted at its lower end, creating a structure that is less responsive to wind, waves, and currents. SPAR foundations have advantages in deep water due to their low center of mass, simple ballast stabilization, and high stability. The purpose of this research is to gain a deeper understanding of the fluid flow occurring around the SPAR, which impacts the performance and stability of the offshore wind turbine. This research will focus on CFD (computational fluid dynamics)-based numerical modeling analysis with the help of 3D analysis software ANSYS by considering several variations of fluid flow velocity to identify the pressure, velocity, and changes in fluid flow around the SPAR. The results of this study are expected to help in reducing the risk of SPAR foundation damage, improving turbine stability, and overall increasing the efficiency of offshore wind energy generation. This research has positive implications for reducing the environmental impact of energy generation compared to traditional fossil fuel sources.]]>
<![CDATA[Perbandingan Panjang Mooring Line Terhadap Karakteristik Pergerakan Kapal Fpso Menggunakan Analisa Numerik ]]>
<![CDATA[Nadya Darwis]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31566
<![CDATA[In analyzing moorings for FPSO (Floating Production Storage and Offloading), many things must be considered so that the mooring system can meet operability and safety standards. In this paper, we will discuss the stability of FPSO ships with varying mooring line lengths for FPSO ships with a capacity of 170218 DWT which will later be converted. The number of mooring ropes is limited to 4 with mooring rope lengths of 3100, 3200, 3300 m respectively. Variations in the length of the mooring line to clearly see the extent of the influence of changes in the length of the mooring line on the tension of each mooring line and the movement offset of the FPSO when moored and subjected to marine environmental loads (waves, wind, currents) using full dynamic analysis with the time method domain. From this study it can be seen that by increasing the length of the mooring line there will be a reduction in the maximum tension on the mooring line, but on the contrary there will be an increase in the offset of the ship's movement. ]]>
<![CDATA[Teknik Penanganan Deformasi Pengelasan Elemen Pendukung Konstruksi Bangunan Kapal ]]>
<![CDATA[Bulan Purnama]]>;
<![CDATA[Taufiqur Rachman]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31599
<![CDATA[Deformation is a change in shape due to stress in the metal caused by expansion of the weld metal during the heating and cooling process which has the potential to reduce the structural strength and operational efficiency of the ship. The forms of deformation due to the welding process on supporting elements of ship construction are shrinkage deformation, corner deformation, deformationbuckling, and longitudinal deformation. This research analyzes the factors that cause welding deformation in supporting elements of ship construction, identifies existing welding deformation handling techniques, and analyzes the effectiveness of deformation handling techniques to maintain the structural integrity of ship buildings. It is hoped that this research can make a scientific contribution in improving the quality, aesthetics and safety of ship construction, as well as increasing the efficiency of the shipbuilding production process. The research method used is in the form of a literature study by accessing library documents or secondary data from existing case studies. This deformation is caused by heat in the material, the expansion coefficient and the heat propagation coefficient. Techniques for handling welding deformation on supporting elements of ship construction can be applied by heating (firing) and cooling. This will provide excellent results if carried out with the correct procedures in handling deformations that occur between supporting elements of ship construction during the fabrication process. Keyword: Dari kata kunci abstrak]]>
<![CDATA[Analisa Perubahan Aliran Pada Model SPAR (4VP) ]]>
<![CDATA[Nurhikma Nurhikma]]>;
<![CDATA[Fuad Mahfud Assidiq]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31624
<![CDATA[Research on the flow around the SPAR model was carried out with the aim of finding out how much effect the flow has on the SPAR structure used in offshore wind turbines. SPAR is a type of floating structure that can usually be used in deep seas and is an effective and reliable structure in terms of construction. Spar has the advantage that the buoyancy point (KB) is above the gravity point (KG), thus providing good stability. However, there are still obstacles to the use of SPAR structures in the deep sea, especially when environmental conditions are extreme, where SPAR structures are not able to reduce currents at a certain speed level. Then, this research aims to test the SPAR model with a four vertical plate (4VP) configuration system which is then modeled using Computational Fluid Dynamics (CFD) based numerical modeling which aims to investigate the flow around the SPAR in terms of flow velocity. Especially at certain flow velocity levels, the velocity is chosen carefully at each level starting from: V1 = 0.611m/s, V2 = 6.114, V3 = 61.144, V4 = 611.438. The addition of vertical plates to the bottom construction of the SPAR has a role in dampening the flow and also turbulent effects due to current impacts.]]>
<![CDATA[Analisis Pengaruh Posisi Fairlead Terhadap Rasio Kerusakan Akibat Kelelahan Pada Struktur Tali Tambat Tipe Catenary FPSO Aoka Mizu ]]>
<![CDATA[Nur Indah]]>;
<![CDATA[Fuad Mahfud Assidiq]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31658
<![CDATA[This research discusses the effect of fairlead position on the fatigue damage ratio of the Aoka Mizu Floating Production Storage and Offloading (FPSO) catenary structure during moored conditions. The FPSO is subject to the influence of ocean waves, ocean currents, and wind that can cause significant movement, jeopardize the catenary mooring system, and disrupt the production process. This study utilizes a numerical method based on the Boundary Element Method and uses environmental data from the Masela Block, which includes wave, wind, and current data. Three variations of fairlead position (0.3T, 0.5T, and 0.9T), each referring to the fairlead distance from the laden to the ship's keel, were tested with a rope length of 3100 m and a sea depth of 1000 m. The results showed that a fairlead position of 0.3T resulted in low stress and damage levels, while fairlead positions of 0.5T and 0.9T resulted in higher stress and damage. The fairlead position plays an important role in determining the stability and performance of the FPSO catenary structure. A fairlead position of 0.3T appears to be the most favorable option to reduce the risk of damage and stress to the FPSO Aoka Mizu catenary mooring system during moored conditions.]]>
<![CDATA[Analisis Motion Trajectory dan Fatigue Damage Ratio FPSO Terhadap Catenary Mooring Line Failure ]]>
<![CDATA[Muhammad Alkhan Dwiki Abadi]]>;
<![CDATA[Fuad Mahfud Assidiq]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31700
<![CDATA[Floating Production Storage and Offloading (FPSO) is a ship that produces floating oil and gas by having a catenary mooring type mooring system. The FPSO will produce oil and gas in the Abadi Field in the Masela Block of the Arafuru Sea (09˚ 07' 51'' S / 130˚ 28' 00'' E) where the area has sea waves, wind and currents which will affect performance FPSO ship. In this research, Response Amplitude Operator (RAO), motion trajectory and fatigue damage ratio will be tested with a ship mooring system of 12 ropes, 3 of which experienced failure. The conclusion of this research is that the more mooring ropes break, the farther the FPSO ship will move from its initial condition and the higher the maximum rope tension value, it will be directly proportional to the stress range on each mooring rope, while for the fatigue damage ratio, the higher the failure cycle value. then it will be inversely proportional to the fatigue damage ratio value for each mooring rope.]]>
<![CDATA[Analisis Gerak FPSO (Floating Production Storage and Offloading) dengan menggunakan variasi Radius Mooring Berbasis Simulasi Time Domain ]]>
<![CDATA[Muhammad Mustafa Algifari Algifari]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31723
<![CDATA[Along with the development of technology, oil and gas exploration has begun to be carried out in the deep sea. One technology that can be used is FPSO (Floating Production Storage and Offloading). In order for the FPSO to be damped due to environmental loads during the production process, a mooring system is needed that meets standards according to the needs and environmental characteristics of the oil field. The mooring system used is a spread mooring system which is limited to 12 mooring lines. The research uses variations in the mooring line radius so that the length of the mooring line and the anchor position are different. This research is intended to analyze the effect of the mooring line radius on FPSO movement and the tension of the mooring line itself using a numerical approach with ANSYS AQWA software. From this study it can be seen that by increasing the length of the mooring line there will be a reduction in maximum tension on the mooring line, but the opposite is true there is an additional offset to the ship's movement. However, because the anchor position is further away in each radius, the tension value on the mooring line does not have a significant difference]]>
<![CDATA[Pengaruh Radius Mooring Line Terhadap Penambatan Fpso Menggunakan Pendekatan Numerik ]]>
<![CDATA[Adhitya Arya Prayudha Kurniawan]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31724
<![CDATA[Floating Production Storage and Offloading (FPSO) is a floating facility in the form of a ship that is used to produce as well as a temporary storage of petroleum taken in the middle of the ocean, in its operation the FPSO is moored using mooring ropes to limit the motion of the facility. This mooring system is needed to reduce dynamic movements due to environmental loads received by the FPSO. This study was conducted to analyze the motion characteristics of FPSO that have been moored using a Spread Mooring System with a certain mooring radius and the stresses received by each mooring line using a time domain based numerical approach. The method used is a literature study and a numerical approach with the Boundary Element Method (BEM), it is concluded that the further the radius of the mooring line, the smaller the tension received by each mooring rope so that the structure becomes more stable.]]>
<![CDATA[Analisis Kondisi Aliran Fluida Dan Tekanan Di Sekitar Spar Dengan Sistem Redaman Lima Plat Vertikal ]]>
<![CDATA[Dimas Fitrawan]]>;
<![CDATA[Fuad Mahfud Assidiq]]>
<![CDATA[ Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition ]]>
Publisher : <![CDATA[Departemen Teknik Kelautan Universitas Hasanuddin ]]>
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DOI: 10.62012/zl.v5i1.31740
<![CDATA[Spar type Floating wind Turbine is a floating structure that utilizes the speed of the sea wind to drive a turbine that can generate electrical energy .SPAR is a cylindrical floating structure that has a deep draft and is reliable in operating in the deep sea for a long time.in this study using a SPAR model with a damping system of five vertical plates located at the bottom of the SPAR structure where in this study the analysis about fluid flow conditions and pressures that are around the SPAR.this study was conducted by calculation numerical based CFD (Computational Fluid Dynamics) with four variations of fluid flow velocity used to observe changes in fluid flow conditions and pressure around the SPAR.this study aims to observe the conditions and influences around the SPAR type floating wind turbine structure which is expected to be a solution to energy problems in the world.]]>
