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Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan
Published by Universitas Hasanuddin
ISSN : 27472124     EISSN : 27215717     DOI : 10.20956
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Transportation
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.
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 207 Documents
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Freeboard and Trim Measurement: a Case Study of Landing Craft Tank Conversion to Ship Power Plan Suardi Suardi; Wira Setiawan; Samsu Dlukha Nurcholiq; Alamsyah Alamsyah; Andi Mursid Nugraha Arifuddin; Amalia Ika Wulandari; Muhammad Uswah Pawara
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v5i1.27886

Abstract

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.
Evaluasi Jaringan Pipa Minyak Lepas Pantai Guna Optimasi Produksi Area "WK-1" Lapangan "R" Alfan Khoirul Umam; Hadziqul Abror; Riska Laksmita Sari
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.27972

Abstract

Field "R" is an old field located in the South East Sumatra Block. The pipeline network in Area "WK-1" in field "R" has 8 platforms namely the Rama-B, Rama-D, Rama-I, S.W. Wanda-A, Wanda-A, N. Wanda-A, Gita-A, and Rama-C. There are 31 producing wells through the 8 platforms. The purpose of this research is to create a piping network model for Area "WK-1" Field "R", identify optimal or non-optimal conditions for pipelines through simulation results and matching on the pipeline network model, identify whether bottlenecking problems occur in the piping network Area "WK-1" Field "R" using the matching results on the piping network model so that the location of pipes and nodes with fluid problems can be found precisely, and carry out production optimization simulations to increase production rates oil in Area "WK-1" Field "R". Production well modeling and pipeline network modeling using a multiphase steady-state production simulator application, the models that have been made will be validated matching against actual conditions. From the results of matching the pipe network model, an analysis of pipe problems that can occur such as bottlenecks is carried out. From the network simulation results, it can be seen that there is bottlenecking on the pipeline in Area "WK-1" Field "R". This is due to the condition of the pipeline network which has been operating for quite a long time since 1974. From the simulation results, there are 2 optimization scenarios, the production capacity of each well can still be increased and the total rate of oil production increases. In the first scenario, the Bean Size setting on the Choke is 48.92 BOPD with an average increase of 1.55%. Whereas in the second scenario, by opening the pressure limits at the wellhead points, the yield is 583.25 BOPD with an average increase of 16.13%.
Twin Ball and Twin Cylinder of Wave Energy Dwikki Syachruluddin; Arfena Deah Lestari; Muhammad Ivanto; Mochammad Meddy Danial; Jasisca Meirany
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.28189

Abstract

Twin Ball and Twin Cylinder of Wave Energy have the working principle of converting kinetic energy into electrical energy. The problem that occurs in Sungai Raya Kepulauan Sub-district is the problem of limited electricity supply in the ocean area in Lemukutan Island Village, where the electricity demand in the village is limited. The electricity supplied is PLN electricity from diesel power plants that still use fossil fuel sources. This study aims to determine the potential of ocean wave energy that can be utilized by fishermen. This research method uses quantitative methods using secondary data in the form of significant wave height and period data obtained from the ECMWV website. The results of the Twin ball analysis use a ball buoy with a diameter of 18 cm, while Twin Cylinder uses a tube buoy with a diameter of 15 cm and a height of 16 cm. The arm length of both types of floats is 30 cm. Comparison of scale 1:700 Twin Ball and Twin Cylinder can produce electricity of 334.18 W and 106.93 W. From the above results, it can be seen that Twin Ball can produce more power than Twin Cylinder. The amount of power generated can help 1 fisherman's began for lighting needs. About 3 - 4 lamps with a power of 50 W to 75 W per 1 lamp can be used as lighting.
Study On The Design And Implementation Of Bppt-Lock Armored Groin For Sediment Control Structure In Front Of Sea Water Intake Raka Firmansyah; Muhammad Zuhdan Jauzi; Dinar Catur Istiyanto; Aris Subarkah; Sungsang Urip Sujoko; Mardi Wibowo; Rizaldi Caesar Yuniardi
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.28244

Abstract

High rate accumulation of sediment materials in front of the sea water intake (SWI) of a petrochemical factory cooling water system has caused high maintenance dredging costs. A study was conducted to identify the pattern and rate of sedimentation and to find an engineering solution that enables controlling sedimentation rate reduction. Based on numerical simulation, it is identified that the existing total rate of sedimentation around the channel in front of the SWI is 50cm/year. Further numerical simulation series revealed an optimum mitigation scenario by the construction of a pair of groin along both sides of the channel in front of the SWI as a sediment control structure. Under this scenario, the average bed level change becomes 0.10 cm/year and the maximum value of the bed level change is around 24.96 cm/year. A BPPT-lock armored rubble mound-type structure was designed for this sediment control groin by considering its feasibility, ease of construction, and local availability of structure materials. BPPT-lock is selected due to its high hydraulic stability (KD) of 17 for the trunk application and 13 for the head application. It is found that about twenty-five percent  more armor unit numbers were required at the final stage of construction compared to the designed one. The actual method of armor unit placement and arrangement during construction is considered the main cause of this difference. In this case, the calculation was designed for random placement, but the actual construction was in uniform placement. To provide economical insight, a calculation was made to compare the construction budget requirement between this constructed groin armored with BPPT-lock and if the same structure armored with tetrapod. The calculation result shows that BPPT-lock armor units required 64% less budget compared to the tetrapod.
Analisis Pelat Berpenegar dengan Mempertimbangkan Pelat Ikutan dalam Pengaruh Beban Aksial Satu Arah pada Kapal FPSO Rati Ahmad; Firman Husain; Muhammad Zubair Muis Alie
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30106

Abstract

Floating Production Storage and Offloading (FPSO) is the portable offshore structure. The material configuration used is the most important aspect in the FPSO structure design criteria. Plates and Stiffened and plates experience local buckling due to the external load when the hull girder collapsed. The objective of the present study is to analyze the stiffened plates taking the attached plate thickness into consideration on the FPSO in term of plate deformation and deflection located of the bottom area under tension and compression stages. In this study the attached plating thickness is varied according to FPSO data and BKI Rule. The stiffened plate elements located at the bottom are modelled by Tee-Bar element. The simply supported condition is applied to the model and the Non-Linier Finite Element Method (NLFEM) is used for the analysis. The result obtained by NLFEM shows that under tension and compression the stiffened plate of model of the thickened plate of the FPSO, the deflection are 1.75 mm and -1.75 mm, respectively. While for model of corrugated plates with BKI minimum intervening plate thickness the deflection are 1.8 mm and -1.8 mm under tension and compression, respectively.
Wakatobi Mangrove Trap 1st Generation: A Small-Scale Prototype of Mangrove Biota Trapping Technology for Wakatobi Small-Islands, Southeast Sulawesi Sariamin Sahari; Muhammad Musrianton; Alfi Kusuma Admadja; Kezia G Apriliana Runtu; Indah Alsita; Khairuddin Isman; Akhmatul Ferlin; Heru Santoso
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30735

Abstract

Mangrove ecosystems have forest functions and benefits as a nursery zone for fisheries biota, protecting coastal abrasion, carbon sinks, and supporting nutrient content for aquatic health. Unfortunately, the area of this forest is decreasing, so conservation efforts are needed. Mangrove forests in Wakatobi Regency are a very important resource for coastal areas and small islands and should be preserved and continuously developed, along with other resources. Mangrove forest conservation efforts have become the main concern of the parties. However, planting and rehabilitation efforts are still an obstacle due to very slow growth and even death. Several cases were found where mangrove propagule planting on Wangi-Wangi Island Beach died in a short time. The aim of the research is to design a prototype or simple technology that is useful for trapping sediment and reducing the influence of waves at the beginning of propagule planting and when mangrove saplings have begun to grow and survive at the age of about 1.5 to 3 years. This research is included in quantitatively applied research in the form of a simple structural product that is then installed on Melaione Matahora Beach and Liya Togo Beach. The results obtained are the design (prototype) of a mangrove trap with a concrete structure measuring as 1 m x 0,5 m x 0,5 m with a shape similar to a puzzle box, each side of which locks together. Wakatobi mangrove trap box contains a mixture of mangrove leaf litter, seagrass litter, aggregate humus soil, and sandy soil, which is then planted with propagules of mangrove. This research lasted approximately 1 (one) year more, and the mangrove-planted seedlings grew well, although seedlings planted on Melaione Matahora Beach initially died due to moss pests, but after repairing the prototype to the 1st generation model, the propagule grew well and survival until now.
Eksperimen Konsumsi Beberapa Jenis Bahan Bakar Pada Mesin Diesel 7 HP Silinder Tunggal Barokah Barokah; Muhammad Bintang Fikri; Ahmad Tubagus Tsani Risqi Aji; Marinus Tappy; Wiratno Wiratno; Putu Deny Darmawan
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30748

Abstract

The use of fuel oil to generate heat or power in the industrial world is still a major concern for researchers. Fuel quality, performance, emissions, and economic factors are some of the parameters that need to be considered for various types of fuel. In Indonesia, there are several types of diesel fuel including Pertamina Dex, Dexlite and Biosolar (B30). Of course, these fuels have different characteristics. To be able to know the character of the fuel, it is necessary to test the fuel on a diesel engine. In this study, an experiment was carried out using this fuel in a Jianfa brand diesel engine with a power of 7 HP type R175A without load with various variations of rpm, namely 1000, 1200, 1400, 1600, 1800, 2000, 2200. The experiment applies to three types of fuel, namely Biosolar (B30), Pertamina Dex, and Dexlite. Consumption is measured in units of time (seconds) per 50 milliliters. From the experiments it was found that Biosolar (B30) occupies the lowest position as evidenced by the duration of time to spend 50 milliliter at 2000 rpm only takes 49 seconds, Dexlite 63 seconds while Pertamina Dex 70 seconds. So it can be concluded that Pertamina Dex is the most economical compared to Dexlite and Biosolar (B30).
Prototipe Perahu Listrik: Pengaruh Ukuran Propeller Terhadap Resistance dan Power Pada Software Maxsurf Resistance Ahmad Ilham Ramadhani; Dwi Dharma Arta Kusuma; Andie Murtono; Ahmad Tubagus Tsani Risqi Aji
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30775

Abstract

The boat model as a prototype of an electric boat has been successfully modeled and simulated using Maxsurf software. The research aims to determine the resistance and power values of the boat when operating using the Holtrop method. The Pakura boat was modeled using a Maxsurf modeler and simulated using Maxsurf resistance. Based on the modeling results, it shows that the boat model corresponds to the main dimensions in real conditions. The Pakura boat model has a displacement of 320.5 kg, amidship and immersed draft of 0.25 m, and a wetted area of 2.94 m2. The resistance and power are calculated using the resistance and power holotrop methods. Based on the simulation results, we obtained a prototype model of an electric boat that can operate on a certain propeller size. The maximum speed of the electric boat prototype with a 7-inch propeller is 4.31 kn. At 1500 rpm, the boat receives an HR of 92.71 N and requires a power of 205.57 W. On an 8-inch propeller that is 4.82 kN. At 1500 rpm, the boat receives an HR of 121.83 N and requires a power of 302.08 W. The size of the propeller affects the resistance value and power of the boat. The resistance value of the boat and operating power requirements increase along with changes in rpm on the electric engine. This can be used as a reference in determining the propulsion components for an electric boat prototype.
Analisa Penggunaan Daya Listrik pada KM. Jaya Utama 66 Berdasarkan Electric Balance BKI Mohamad Haris; Jozua Ch Huwae; Fahriadi Pakaya; Yurika Nantan
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30818

Abstract

Jaya Utama 66 is a fishing vessel that operates in the sea waters of Maluku to Merauke. Analysis of the demand for electric power in KM. Jaya Utama 66 to prevent blackout conditions when the ship is operating and in selecting a generator as a source of ship power generation is very necessary. The purpose of this practical work is to know the working principle of the generator, to know the electricity distribution system and to be able to analyze the use of electric power in KM. Jaya Utama 66. Based on data obtained from observations and collection of equipment power loads on KM. Jaya Utama 66, the generator set has the principle of a rotor that rotates in a magnetic field and creates an electric force (EMF). Electromotive force is an electric action produced by a non-electric source. Electrical distribution system in KM. Jaya Utama 66 is sourced from the generator and then flowed to the main switch board and distributed to the connecting panel, then the electric power is divided between the loads of electrical equipment. The calculation results show that the ratio of Power consumption equipment is 80% with the Divercity Factor value according to the conditions of in&out ports, sailing, loading and unloading, and berthing above 0.50 and the Generator Load factor in ship operations is still feasible and according to the standards set by BKI which cannot be more of 80%.
Unjuk Kerja Cool Box Berbasis Thermoelectric Cooler (TEC) Menggunakan Sirkulasi Pembuangan Kalor Citra Zaskia Pratiwi; Iman Mawardi; Fikrul Haikal Tamami
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.30830

Abstract

This research discusses performance of cool box based on Thermoelectric Cooler (TEC) using circulation of heat dissipation. The advantage of implementing circulation of heat dissipation is optimize performance of cold side of peltier element. Cool box has capacity of 6L with the dimension of 45 x 36 x 26 cm. Circulation of heat dissipation consists of some components such as water block, radiator, and pump. While cooling components used are peltier element TEC1-12706, DC fan, and coldsink. The cool box temperature measurement results without load for ± 3 hours show coldsink temperature stably at 10°C and 16°C for room temperature. While the results of temperature measurement with 6L load show coldsink temperature stably at 15°C and room temperature of 20°C for ± 3 hours. Air volume flow rate for coldsink temperature circulator of 0,0640 m3/s and air mass flow rate of 0,0768 kg/s whereas air volume flow rate for heat dissipation fan of 0,0224 m3/s and 0,0269 kg/s for air mass flow rate.

Page 10 of 21 | Total Record : 207

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