SENSISTEK:Riset Sains dan Teknologi Kelautan
SENSISTEK is a collection of student works in the form of scientific journals from the Department of Ocean Engineering, Faculty of Engineering, Hasanuddin University. It aims to answer whether research on marine technology by universities, research institutions and industry can contribute to this issue. This journal is expected to contribute to exchanging information, experiences, and thoughts and strengthen the cooperation network between institutions, institutions and industries nationally. So that scientific communication occurs between students and researchers, industry and education.
Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin
The Future of Underwater Technology: Challenges and Opportunities for Indonesia in the Global Ocean Economy
As the world's largest archipelagic nation, Indonesia possesses immense potencial within the global ocean economy. However, mastery of underwater technology is still dominated by developed nations. This perspective article discusses the urgency of developing underwater technology in Indonesia, particularly in the energy, communications, and maritime security sectors. Furthermore, it highlights the challenges of dependency on imported technology, the importance of strengthening human resources (HR), and strategic directions for marine research and innovation policies. The author argues that without an integrated national strategy, Indonesia risks becoming merely a technology market. Conversely, through research investment, industry-academic collaboraon, and blue economy policies, Indonesia has the opportunity to become a signiﬁcant player in the global subsea technology industry.
Copyright (c) 2026 SENSISTEK:Riset Sains dan Teknologi Kelautan
Penguatan Kapasitas Nasional dalam Teknologi Bawah Air: Strategi Riset, Industri, dan Kolaborasi Akademik
As the world’s largest archipelagic country, Indonesia has a pressing strategic interest in mastering underwater technologies to effectively manage marine resources, strengthen national defense, and mitigate maritime disasters. However, a significant technological gap remains between Indonesia and developed countries in this domain. This study aims to formulate a comprehensive strategy to enhance national capacity in underwater technology. Using a descriptive qualitative approach and literature review, this paper examines four key aspects: (1) analysis of the underwater technology gap; (2) the urgency of developing laboratory infrastructure, certification systems, and human resource competencies; (3) the Triple Helix collaboration model involving universities, industry, and government; and (4) the formulation of a national technology development roadmap. The findings indicate that technological self-reliance can only be achieved through strong synergy among research institutions as innovation hubs, industry as manufacturers and off-takers, and government as both facilitator and regulator. The proposed roadmap encompasses phases of foundational capacity building, research downstreaming, and ultimately achieving technological independence and global commercialization in alignment with the Indonesia Emas 2045 vision.
Design and Fabrication Analysis of Single Pile Foundation for Offshore Jacket Structures
The increasing demand for cost-efficient offshore structures has led to the development of alternative foundation systems, one of which is the single pile foundation. This study presents a comprehensive analysis of the design and fabrication aspects of single pile foundations applied to offshore jacket structures. The research focuses on load transfer mechanisms, soil–pile interaction, structural integrity, and fabrication challenges. A combination of analytical methods and literature review is employed to evaluate the feasibility and performance of the system. The results indicate that single pile foundations can provide an efficient and reliable solution under specific soil and loading conditions, provided that detailed geotechnical analysis and strict fabrication quality control are implemented (1).
Analisis Sensitivitas Frame 2d Tipe Portal terhadap Variasi Geometri dan Kondisi Batas dengan SAP2000
This study examines the stiffness sensitivity of 2D portal-type frames to variations in geometry and boundary conditions using finite element analysis in SAP2000. Structural stiffness plays a critical role in determining deformation responses and internal force distribution, particularly in portal systems that are highly influenced by changes in element dimensions and support restraints. The portal model is analyzed under vertical and horizontal distributed loads of 10 kN/m to evaluate shear forces, bending moments, axial forces, and displacements. The analysis shows that the maximum shear force reaches 7,086 kN at the base of the column, while the largest moment occurs at the fixed support with a value of 20,673 kN·m. The axial forces in both columns are dominated by compression and remain relatively constant along their height, reflecting the significant influence of vertical loading. The maximum lateral displacement is approximately 0.202 m, which remains within acceptable limits for sensitivity analysis but still requires consideration of drift criteria for real design applications. These findings indicate that small changes in geometry and boundary conditions can produce meaningful variations in structural response, highlighting the importance of sensitivity studies during early design stages to achieve a more efficient and stable structural configuration. Keywords: 2D frame, structural stiffness, boundary conditions, SAP2000
Analisis Perilaku Portal 3 Dimensi pada Leg System Tipe Jacket terrhadap Beban Vertikal Menggunakan Metode Elemen hingga dengan SAP2000
Jacket structures are a type of three-dimensional frame structure that is widely used in offshore structures to support vertical and lateral loads. Studies on the basic response of leg systems to pure vertical loads are important as a preliminary step before analyzing more complex environmental loads. This study aims to analyze the behavior of a three-dimensional portal structure on a jacket-type leg system using the SAP2000 finite element method. Modeling was performed on a 4-leg structure with diagonal and horizontal bracing using ASTM A992 steel cylindrical cross-sections. Vertical loads in the form of four concentrated loads of 1 kN each were applied to the top brace. The simulation results show a maximum displacement of Uz = 0.560 m, while the maximum lateral displacement is Ux/ Uy = 0.245 m. The maximum axial compressive force on the leg is 1059.44 kN, while the maximum tensile force is 7.41 kN. The maximum stress reaches 620.75 MPa on the center brace due to the concentration of stiffness and local moments. The maximum torsion of 3.42 kNm occurs as a result of the asymmetry of stiffness between elements. This study provides a basic understanding of global deformation, internal force distribution, and critical points of the jacket structure due to pure vertical loads and can be used as a basis for more complex analyses. Keywords: vertical load, structural deformation, FEM, jacket structure, SAP2000
Desain Konseptual PLTN Terapung di Indonesia Timur: Pemilihan Lokasi Strategis di Daerah Terpencil
Eastern Indonesia has great potential for clean energy development, but still faces limitations in terms of electricity infrastructure and energy distribution in island and remote areas. Floating nuclear power plant (FNPP) are seen as an effective solution to meet these needs due to their flexible nature and ability to be located on outlying islands. This study presents a conceptual design for a Floating Nuclear Power Plant, focusing on a strategic location selection study in the waters of Eastern Indonesia. The research methodology includes secondary data analysis via satellite covering oceanographic aspects (waves, currents, sea depth), logistical accessibility, distance from population centres, potential connections to local electricity grids, as well as safety and environmental risk mitigation factors. By obtaining wave recurrence results, it is hoped that suitable locations for the placement of floating nuclear power plants can be identified, while also providing initial considerations for long-term energy planning in Eastern Indonesia. This research is expected to serve as a strategic reference in supporting sustainable energy provision and strengthening national energy security. Keywords: Eastern Indonesia, Floating Nuclear Power Plants, Oceanography, Remote Areas
Copyright (c) 2026 Riset Sains dan Teknologi Kelautan
Floating Nuclear Power Plant Desain Konseptual PLTN Terapung di Indonesia Timur: Respon Gerak terhadap Beban Lingkungan
Abstract Eastern Indonesia is characterized by an archipelagic geography with uneven energy distribution, thus requiring alternative energy sources that are reliable, sustainable, and capable of reaching remote areas. One potential solution is the deployment of Floating Nuclear Power Plants (FNPP) in offshore waters around the archipelago. Nuclear energy, with its very low carbon emissions and high electricity generation capacity, is considered a promising option. This study focuses on the conceptual design of a floating nuclear power plant and the motion response of the installation under environmental loads such as ocean waves, wind, and tsunami potential, which are typical in Eastern Indonesia. Oceanographic parameters such as water depth, distance from the island to the FNPP, current velocity, and proximity to the shoreline were analyzed, with Halmahera Island identified as a potential site due to its stable marine conditions, approximately 100 meters in depth, and a distance of less than 30 km from the coast. The site also benefits from proximity to settlements while considering safety, logistics, and potential support for blue economy development. A literature study and simulation using ANSYS software on an Offshore Floating Nuclear Power Plant (OFNP) SPAR-type model demonstrate that an effective mooring system and optimal design are required to maintain long-term stability and operational performance of the FNPP, as well as to ensure reliable electricity distribution to Halmahera Island. In line with SDG 7 (Affordable and Clean Energy) and SDG 9 (Industry, Innovation, and Infrastructure), this design is expected to serve as a strategic recommendation for the development of floating nuclear power plants in Eastern Indonesia. Keywords: Blue economy, Eastern Indonesia, Offshore Floating Nuclear Power Plants (OFNP), Motion response, Platform stability, ANSYS simulation.
Desain Konseptual PLTN Terapung di Indonesia Timur: Aspek Kelayakan dan Implikasi Ekonomi
Indonesia is a vast archipelagic country with thousands of islands stretching from west to east; however, the distribution and accessibility of electricity supply remain uneven across regions. This challenge necessitates reliable, sustainable, and affordable energy solutions, particularly in the eastern part of the country. To address the energy crisis and climate change mitigation, the Floating Nuclear Power Plant (FNPP) has emerged as a potential alternative due to its ability to generate large-scale electricity with low emissions, more efficient construction compared to land-based plants, and accessible cooling processes. This study evaluates the feasibility of implementing the FNPP design in the waters surrounding Halmahera Island, North Maluku Province. In addition to technical feasibility, the study also highlights economic implications, where the proposed 300 MW capacity not only has the potential to reduce energy disparities but also to provide affordable electricity (SDGs 7), support sustainable infrastructure development (SDGs 9), and promote the blue economy through enhanced access to electricity, strengthened fisheries, port activities, and the maritime industry. Accordingly, the conceptual design of the FNPP is expected to serve as a strategic solution to improve national energy security while supporting Indonesia’s sustainable development agenda. Furthermore, this design recommendation is anticipated to serve as a strategic reference to reduce energy disparities in remote areas, strengthen national energy resilience, and contribute to the global development agenda.
STRATEGI MANAJEMEN RISIKO DALAM PEMELIHARAAN INFRASTRUKTUR MARITIM UNTUK KESELAMATAN DAN PRODUKTIVITAS
Penelitian ini bertujuan merumuskan strategi manajemen risiko dalam pemeliharaan infrastruktur maritim guna meningkatkan keselamatan dan produktivitas operasional pelabuhan. Evaluasi difokuskan pada peran komponen infrastruktur, mencakup fasilitas, teknologi, dan prosedur operasional, terhadap efektivitas pengelolaan risiko. Pemeliharaan serta perbaikan infrastruktur maritim memiliki peran penting dalam menjamin kelancaran aktivitas pelabuhan sekaligus menjaga standar keselamatan. Namun, proses ini kerap menghadapi tantangan, seperti keterlambatan pekerjaan, kerusakan peralatan, serta faktor lingkungan yang berpotensi menurunkan produktivitas. Penelitian ini menerapkan pendekatan manajemen risiko melalui identifikasi potensi bahaya, analisis tingkat kemungkinan dan dampak, serta perumusan strategi mitigasi berdasarkan standar keselamatan maritim. Hasil penelitian menunjukkan bahwa penerapan manajemen risiko yang terstruktur mampu mengurangi potensi kecelakaan kerja, menekan biaya tak terduga, serta meningkatkan keandalan infrastruktur dan efisiensi operasional pelabuhan. Strategi ini menunjukkan efektivitas dalam menyeimbangkan keselamatan dengan produktivitas melalui optimalisasi pengelolaan pemeliharaan infrastruktur. Dengan demikian, penelitian ini menegaskan bahwa manajemen risiko bukan hanya instrumen penting dalam pemeliharaan infrastruktur maritim, melainkan juga pendekatan strategis untuk memastikan keberlanjutan produktivitas pelabuhan. Temuan ini memberikan kontribusi bagi pengembangan kebijakan pemeliharaan yang adaptif, berorientasi pada keselamatan, serta responsif terhadap dinamika lingkungan operasional maritim.
PENERAPAN SMART PORT SYSTEM BERBASIS IoT UNTUK EFISIENSI MANAJEMEN OPERASIONAL PELABUHAN DI INDONESIA
Pelabuhan di Indonesia memiliki peran vital dalam menopang sistem logistik nasional dan internasional, terutama karena lebih dari 90% volume perdagangan dunia diangkut melalui laut. Namun, masih banyak pelabuhan Indonesia menghadapi persoalan efisiensi operasional, seperti lamanya waktu tunggu kapal (waiting time), tingginya dwelling time, serta keterbatasan koordinasi antarpemangku kepentingan. Penerapan konsep Smart Port System berbasis Internet of Things (IoT) menjadi solusi inovatif dalam mendukung transformasi digital pelabuhan menuju era Port 4.0. Konsep ini memungkinkan peningkatan produktivitas, transparansi operasional, serta efisiensi energi melalui integrasi sistem digital, analitik data, dan automasi proses. Penelitian ini merupakan kajian literatur sistematis yang menelaah berbagai publikasi ilmiah internasional dan nasional pada periode 2019–2025 mengenai implementasi Smart Port System. Fokus kajian mencakup identifikasi teknologi utama (sensor, RFID, AGV, TOS), dampak penerapan terhadap indikator kinerja pelabuhan (throughput, dwelling time, moves per crane per hour), serta hambatan implementasi di konteks Indonesia. Hasil kajian menunjukkan bahwa penerapan sistem pelabuhan pintar dapat meningkatkan efisiensi operasional secara signifikan: throughput meningkat 15–30%, dwelling time menurun 25–40%, produktivitas crane meningkat 20–35%, serta konsumsi energi turun 15–20%. Namun, efektivitas implementasi sangat dipengaruhi oleh kesiapan infrastruktur digital, investasi, kebijakan regulatif, serta kapasitas sumber daya manusia. Penelitian ini merekomendasikan strategi bertahap implementasi Smart Port System di Indonesia, dimulai dari digitalisasi layanan administratif, penerapan IoT pada peralatan utama, hingga integrasi data analitik dan keamanan siber. Pendekatan tersebut diharapkan mampu memperkuat daya saing pelabuhan nasional dan berkontribusi terhadap penurunan biaya logistik nasional. Kata Kunci: Smart Port, Internet of Things, efisiensi operasional, Pelabuhan, Port 4.0
STUDI KOMPARATIF: KEPUASAN PENUMPANG KAPAL FERRY ASDP DAN KAPAL DHARMA LAUTAN TUJUAN SELAYAR
Penelitian ini bertujuan untuk mengidentifikasi tingkat kepuasan penumpang terhadap pelayanan yang diberikan oleh kapal ferry ASDP dan kapal Dharma Lautan pada rute tujuan Selayar, faktor-faktor yang mempengaruhi kepuasan penumpang pada kedua kapal ferry tersebut serta perbandingan antara kualitas pelayanan dan pengoperasian kedua kapal tersebut. Kepuasan penumpang diukur berdasarkan indikator: kualitas pelayanan (keramahan staf, responsivitas), fasilitas kapal (kenyamanan tempat duduk, kebersihan, dan fasilitas tambahan), serta ketepatan waktu keberangkatan dan kedatangan. Kualitas pelayanan dinilai berdasarkan persepsi penumpang terhadap indikator seperti kecepatan layanan, keramahan staf, dan ketepatan waktu. Pengoperasian kapal dinilai dari aspek kenyamanan fasilitas, frekuensi keberangkatan, dan efisiensi operasional. Penelitian ini menggunakan pendekatan kuantitatif deskriptif dengan metode komparatif untuk membandingkan tingkat kepuasan penumpang antara dua operator kapal, yaitu PT ASDP Indonesia Ferry dan Dharma Lautan Nusantara. Berdasarkan hasil penelitian, nilai rata-rata (mean score) dari kedua kapal tersebut memiliki selisih sekitar 8 nilai. Rata-rata tingkat kepuasan pelanggan kapal ferry ASDP adalah 64,68 sedangkan rata-rata tingkat kepuasan pelanggan kapal Dharma Lautan lebih tinggi yaitu mencapai 72,96. Angka ini menunjukkan bahwa secara statistik pelanggan kapal Dharma Lautan secara umum lebih puas dibanding pelanggan kapal ASDP. Faktor-faktor yang mempengaruhi kepuasan penumpang: Jadwal keberangkatan yang tepat waktu; Pelayanan awak kapal; Kebersihan dan fasilitas kapal; Harga tiket; Proses naik turun penumpang. Penelitian menunjukkan persentase perbandingan kepuasan penumpang pada kedua kapal ini berbeda secara signifikan di mana kapal Dharma Lautan Utama memiliki persentase tinggi pada setiap indikator penilaian kepuasan, sedangkan kapal ferry ASDP hanya berada di kisaran persentase tertinggi 30%.
DESIGN AND STABILITY OF THE GALAHERANG TOUR SHIP USING MAXSURF SOFTWARE
This study aims to analyze the design and stability of the Galaherang tourist vessel operating on the Kapuas River, Pontianak, using Maxsurf software. The Galaherang is a river-based passenger vessel designed to accommodate approximately 97 passengers and 4 crew members. The analysis includes hull form modeling using Maxsurf Modeler and stability simulation using Maxsurf Stability. The study encompasses hydrostatic calculations, equilibrium analysis, and large angle stability assessment. The results show that the vessel has principal dimensions of LOA 21 m, LWL 17.6 m, beam 5 m, depth 3 m, total height 8 m, and draft 1.61 m. The vessel’s transverse metacentric height (GMt) is 0.957 m under full load conditions. The righting arm (GZ) curve reaches a maximum of 0.523 m at a heeling angle of 45.5°, with an area under the curve of 71.583 m·deg for the 0–30° range. Simulations under dynamic conditions, such as passenger crowding and turning, result in heel angles ranging from 7.5° to 10°, which remain within safe limits. The design complies with the minimum stability criteria set by IMO Resolution A.749(18) Chapter 3 and the BKI standards for passenger vessels, meeting requirements for initial stability, large-angle stability, and longitudinal balance.
This study aims to describe the condition of spare parts management and operational smoothness, as well as to analyze the influence of spare parts management on operational smoothness at PT Pelayaran Samudera Rizqi. The research employed a descriptive quantitative approach using a survey method. Data were collected through questionnaires distributed to 60 respondents who are active employees of the company. The descriptive analysis results show that the average score for spare parts management is 4.08 and for operational smoothness is 4.03, both of which fall into the "good" category. Simple regression analysis yielded a t-value of 8.369, which is greater than the t-table value of 1.671, with a significance level of 0.001. This indicates a significant influence of spare parts management on operational smoothness. The coefficient of determination (R Square) is 0.547, suggesting that 54.7% of the variation in operational smoothness is explained by spare parts management, while the remaining 45.3% is influenced by other factors outside the scope of this study. The resulting regression equation model is Y = 11.695 + 0.805X. These findings emphasize that effective spare parts management plays a crucial role in supporting the smooth operation of shipping company activities. Keywords: spare parts management, shipping, operational smoothness
The Relationship between Stress Coping and Cadets’ Learning Motivation in Vocational Maritime Education and Policy Formulation
This study aims to analyze the relationship between stress coping and cadets’ learning motivation in Vocational Maritime Education and to formulate relevant policies. The study population consisted of 95 first-year cadets’ at the Vocational Faculty of Maritime. The sampling technique used was saturated sampling, where all 95 cadets’ became research participants. Data collection methods included questionnaires, observations, and interviews. Data analysis was conducted using multiple regression analysis, with hypothesis testing performed using t-tests and F-tests. The results showed that Emotion-Focused Coping did not significantly affect learning motivation when analyzed separately. However, Problem-Focused Coping had a significant impact on learning motivation. When considered simultaneously, both coping strategies significantly influenced cadets’' learning motivation. Based on these findings, this study suggests the necessity of a comprehensive policy to help cadets’ manage stress. This includes providing guidance and counseling services and developing effective stress management training programs to enhance cadets’ well-being, reduce dropout rates, and increase learning motivation. Implementing these policies is expected to support cadets’ in achieving optimal academic performance and completing their education on time.
Rekayasa dan Manajemen Kepelabuhanan dan Transportasi Laut
Optimization of Cold Storage Temperature and Humidity Monitoring with Elitech RC4 HC Data Logger: Case Analysis at PT. Delta Mina Perkasa
Cold storage is an important facility in the fishing industry to extend the shelf life of products, especially frozen fish, while maintaining their quality. This research analyzes the performance of the Elitech RC4 HC Data Logger in monitoring temperature and humidity in a 400-ton capacity cold storage at PT Delta Mina Perkasa, Sidoarjo, East Java. Research methods include surveys, direct observation, interviews, and internships, with descriptive and quantitative data analysis approaches. Data loggers were placed at three points: near the door, the middle section with load, and the back section without load, to record temperature and humidity conditions for 78 days. The results showed that the best temperature and humidity stability was recorded in the center of the cold storage, while the largest temperature fluctuations occurred near the door, caused by door opening and closing activities. In June, the cold storage conditions were considered good, but the quality of frozen fish decreased during July to September due to machine repairs. Overall, the Elitech RC4 HC Data Logger proved effective in monitoring real-time temperature and humidity conditions. However, to maintain the quality of frozen fish consistently, it is recommended that the company adds specialized humidity monitors, improves cold storage management, and conducts regular monitoring.
HARI EFEKTIF MESIN KAPAL NELAYAN TRADISIONAL
Ship engines are machines that play an important role in the dynamics of the fishing business. Unfortunately, traditional fishing boat engines in Indonesia are neglected in maintenance and repair, so that apart from affordable areas, efforts in unreached areas are very important. In this research, damaged machines are maintained and repaired, working hours are monitored, with the main aim of evaluating continued seaworthiness compared to machines that work continuously. Machine operation, machine working hours, assessed for one year in Tablolong village, East Nusa Tenggara, Indonesia. The effective day rate of operation ranges from 268±97 to 275±90 idle time in machine operation and from 190±175 to 200±165 idle time in continuous machine operation. Machines that are maintained every month have higher levels of operation and movement compared to machines that are maintained for three and five months. However, the seaworthiness of the engines is very low, mostly due to lack of understanding, unavailability of engine maintenance facilities. Effective days in machine operation were observed, during the period (January-November). Machine maintenance is very useful for traditional fishermen who lack skills. Nevertheless, ongoing long-term and systematic monitoring is necessary to have a greater understanding of maintenance and repair.
EFFECT OF THE MADDEN-JULLIAN OSCILLATION ON VARIABILITY SEA SURFACE TEMPERATURE IN THE MAKASSAR STRAIT
Madden-Jullian Oscillation (MJO) climate variability is global climate variability that can influence oceanographic conditions, including sea surface temperature. This research was conducted to determine the influence of the MJO phenomenon on sea surface temperature variability during the Asian Monsoon period in the Makassar Strait. The data used in this research are MJO monitoring data from BOM, sea surface temperature data from NOAA's Aqua MODIS Satellite. The method used in this research is to group active MJO events into phases 2, 3, 4 and 5 and then create a monthly average SST. Next, determine the monthly SST anomaly and then analyze it. The research results show that when the MJO is active in phases 2,3,4 and 5, there is an increase and decrease in SST
PRE ELIMINARY DESIGN OF LAKKANG FLOATING PIER
Lakkang is one of the neighbourhoods located in Tallo Sub-district, Makassar City and is a residential area and tourist destination purpose. Lakkang can be accessed from varius directions, namely from Kera-kera and Tallo. To get to Lakkang, people currently use catamaran boats. In order to support shipping to Lakkang, a pier was built on the island called the Lakkang pier. Lakkang Pier is made of wood. The existing pier at this time during the high tide season with flood discharge the pier is submerged in water, the distance between the pier floor and the low tide elevation is 1.93 m and the condition of the pier construction is not safe for the process of loading and unloading goods and getting on and off passengers. Therefore, a pier design is needed that can overcome these problems. The purpose of this research is to conduct preliminary planning of floating docks in Lakkang. The research starts from collecting secondary data and primary data. Secondary data includes spatial planning documents, social economy and river discharge. While primary data include tides, bathymetry, shipload, and ship data. Furthermore, analysis of all data collected was carried out to determine the dimensions of the floating dock. The planning results obtained the dimensions of the planned pier have a length of 9.2 m, a width of 5.2 m, a height of 0.708 m, and a ladder of 0.115 m.
MASA DEPAN ENERGI TERBARUKAN DI LAUT: PERAN TEKNOLOGI TENAGA LAUT DALAM MITIGASI PERUBAHAN IKLIM
Human life cannot be separated from the use of energy. Energy is needed for many things like cooking, traveling, and working. Currently, electrical energy is the main need. To produce electrical energy, power plants that utilize renewable and non-renewable energy sources are needed. Technology in the field of renewable energy continues to experience rapid development. The use of renewable energy aims to reduce the impact of global climate change and reduce dependence on fossil fuels. A variety of natural resources are available as renewable energy alternatives, one of which is marine power technology. Marine energy technology is a technology that utilizes various properties and movements of the ocean to generate electrical energy. Energy sources from the sea can be utilized by using marine technology such as ocean current technology, ocean wave technology, and ocean thermal energy conversion. This technology makes it easy to adapt to the characteristics of the exploited sea.
OPTIMIZATION OF BREAKWATER FUNCTION FISH LANDING PORT (PPI) TANAH BERU BULUKUMBA REGENCY
At the Fish Landing Harbor (PPI) coastal protection buildings have been built to protect the area in an effort to obtain calm waters at the harbor. A breakwater is infrastructure built to break waves by absorbing wave energy. The types of wave breakers are sloping side breakwaters, vertical side breakwaters and mixed wave breakers. Waves are a form of energy that can shape beaches, cause currents and sediment transport in perpendicular directions and along the coast, and cause forces that act on coastal buildings. The aim of this research is to determine the characteristics of wave transmission and alternative breakwater construction in ports, simulated using a numerical hydrodynamic model to simulate waves. The input data is wave height, wave period and wave direction. The Fish Landing Harbor Breakwater (PPI) is not yet optimal because the waves entering the port area in the west season reach 1.2 meters. Based on the results of the breakwater design used to optimize its function, this can be proven by the existence of breakwater construction designed in modeling where the breakwater with a length of 150 m, the wave height entering the protected area is 0.81 m, the breakwater with a length of 300, the wave height entering the area protected by 0.2 m, and a breakwater with a length of 500, the wave height entering the protected area is 0.03 m.
KAJIAN LAJU TRANSFOR SEDIMEN DI ESTUARIA JENEBERANG, STUDI KASUS PEMUNCULAN TOMBOLO AKTIF DI SELATAN ESTUARIA
Sediment movement continuously at the mouth of the river causing erosion and sedimentation and shoreline changes in the area around the estuary. Introduction behavior sedimentation in the estuary is an important initial step in determining step efforts to address the problem of sediment deposition and movement. This study aimed to determine the pattern of propagation of waves and currents and their effects on sediment and Tombolo active or cuspate appearance. The methodology used in data collection is to perform direct measurements and the data obtained is processed by software based on finite difference especially for the analysis of wave propagation patterns and sediment movements. The results of the study conducted in the southern estuaries Jeneberang shows that the propagation pattern of waves and currents affect the movement of sediment and the intersection between the two causes that trigger the appearance of sediment deposition on Tombolo active or cuspate.
ESTIMASI WAKTU REPARASI KM. WILIS MENGGUNAKAN CRITICAL PATH METHODE
Accurate time estimation is the key to the success of KM Wilis repair activities at PT Industri Kapal Indonesia (Persero). Delays in ship repair activities will be able to cause losses for shipowners in fulfilling shipping transport service schedules. This study aims to develop a reparation plan for KM. Wilis with critical path method in order to obtain the optimal duration of repair work. Based on the KM Wilis repair list, repair activities were identified into smaller components (work breakdown structure) to determine the relationship between preceding and preceded activities. The repair list is also used as a guideline for data analysis, which includes job descriptions, labour, duration, and work volume. Critical Path Method as a time management method is used to identify activities that are on the critical path. KM Wilis repair time estimation obtained a duration of 33 days with critical path activities including tug boat services, docking services, hull cleaning work with water jets, hull cleaning work with scrap, unloading skerm bush pintles and rudder leaf pens, dismantling of the lowered rudder leaf on the dock floor, making new left rudder leaves, reinstalling rudder leaves, undocking services, tug boat services and sea trials.
ANALYSIS OF THE POTENTIAL UTILIZATION OF THE TALLO RIVER MAKASSAR AS A SHIPPING ROUTE
One of the rivers with potential for development into a river transportation system in the city of Makassar is the Tallo River, which is approximately 22.2 km long. This river can connect the Tamalanrea sub-district with the coastal area of Makassar. Currently, the Tallo River is utilized as a transportation route to Lakkang Island, which is one of the tourist destinations. Based on the relatively wide characteristics of the river, the Tallo River can accommodate vessels with a relatively large draft. However, a study is needed to determine the maximum draft of vessels that can operate in the river based on water depth and air clearance at the Reformasi Toll Bridge. The objective of this research is to determine the maximum draft and freeboard of vessels that can operate in the Tallo River, identify areas of shoaling, and calculate the volume of dredging required. The research begins with literature review, collection of secondary and primary data, data analysis, and identification of shoaling points for calculating dredging volume. The data collected includes bathymetric data, tidal data, current data, bottom sediment data, and river discharge data. Based on the data analysis results, the maximum vessel draft before dredging is 1.0 m LWL with an air clearance of 1.9 m from the high tide water level. After dredging, the draft of vessels that can use the Tallo River is 1.5 m LWL. The locations requiring dredging are 13 points, with a total dredging volume of 1283.49.
VALIDASI KECEPATAN ARUS SIMULASI NUMERIK MIKE 21 DENGAN KECEPATAN ARUS LAPANGAN PADA BANGUNAN GROIN PT. BODDIA GALESONG JAYA
Ocean currents are the flow of water in the ocean, influenced by factors such as temperature and salinity gradients, wind stress, gravitational forces from the moon, and bathimetry of ocean. These currents follow specific patterns and significantly impact climate, weather, and marine ecosystems. This study focuses on validating field measurements of current speed against simulated speed generated by the MIKE 21 software, a widely used tool for hydrodynamic modeling in coastal engineering. The validation process involved comparing in-situ measurements of current speed, obtained using an acoustic Doppler current profiler, with the simulated currents from MIKE 21. The simulation parameters were calibrated to reflect the field conditions accurately. The results indicated that the maximum discrepancy between field measurements and the model's simulated currents was approximately 6.3%. This level of agreement confirms that the MIKE 21 model accurately represents the field conditions. Therefore, the model's predictions can be reliably used for other hydrodynamic simulations and coastal management applications.
DISASTER POTENTIAL ANALYSIS OF EXTREME SEA WAVES AND COASTAL ABRASION IN TANJUNG BUNGA AND BAROMBONG BEACH AREA IN MAKASSAR
Makassar City is a coastal city in Indonesia with a coastline length of 32 km which includes eleven small islands and a total area of 122,370 km or about 1.1% of the area. This is why Makassar City has a unique character as a coastal city. In recent years, coastal areas in various parts of Indonesia have experienced a very alarming decline, according to the report of the Content Study and Management Plan for Coastal Waters and Oceans, Ministry of Regional Development and Regional Development. Makassar City is one of 30 coastal cities in Indonesia. It is estimated that coastal cities in Indonesia can be affected by rising sea levels in coastal areas, among others; Coastal areas are exposed to negative impacts such as sedimentation (deposition), environmental pollution, then changes in the water system due to human activities and building infrastructure on land but also at sea. The Makassar coastal area has experienced a significant decrease in environmental carrying capacity caused by uncontrolled access to building infrastructure and the condition of the earth's surface shape in coastal areas that can cause disasters. If coastal conditions are not repaired/improved and reduced, it will cause damage to coastal environmental areas which also have an impact on the surrounding areas. The development of this coastal area must be managed by developing the concept of disaster reduction. through the right regional system with me
Coastal and Marine Environment Disasters
DEVELOPMENT OF SHIP CONSTRUCTION ON A PINISI SHIP USING A LAMINATED HULL
The development of shipping technology continues with the discovery of new construction methods to achieve fast and cost-effective results. The development of shipping technology is starting to show a better direction and shipping as a means of transportation has become a very promising business for the shipping industry in Indonesia. This is different from the construction of civil ships, where the legal process is still traditional and takes a long time, especially for private ships. It is very important to pay attention to the factors that influence the condition of the ship. Factors related to ship performance and productivity must of course be taken into account, especially when calculating ship cargo. Because increasing the load will reduce the maximum load that the ship can carry and automatically affect the stability of the ship, etc. Under these conditions, it is necessary to calculate the performance of the ship's steel that will be used later so that the collection is in accordance with the ship owner's expectations. The development of working methods is considered negative due to differences in current conditions, especially in the manufacturing sector, especially in the quality of technology and human resources. Therefore, one of the methods used is the lamination technology method, which combines one or more types of materials into one
ANTICIPATING THE IMPACT OF SEA LEVEL RISE AND ITS MITIGATION IN THE GALESONG TAKALAR COASTAL AREA
Indonesia is an archipelago, and some cities began as coastal towns. Takalar, a coastal city, has experienced social, cultural, and economic development. The Galesong Coastal Area, located in Takalar Regency, South Sulawesi, has various aspects of social, cultural, and financial life, as well as a tourism sector. The relative sea level on the Galesong coast ranges between 6,203 and 6,274 mm per year. On the other hand, sea level rise has tremendous effects on climate change and marine disasters. Some of the effects produced by sea level rise include increased frequency and intensity of flooding, changes in ocean currents, greater mangrove damage, and increased threats to the socioeconomic activities of coastal communities. The purpose of this study is to identify the effects and sources of sea level rise and disasters, hence this study shows the impacts on coastal communities and surrounding marine ecosystems. Based on the declining terrain, socialisation and education of the community on disaster mitigation, and the creation of evacuation routes are some of the impacts that can be anticipated from sea level rise and disasters.
CONCEPTUAL DESIGN OF A MINI SHIP AS A WASTE CLEANER IN A TOURIST BEACH ENVIRONMENT
Environmental cleanliness is still a very serious problem until now, even though cleanliness is something that must be considered for the government and the awareness of the citizens themselves. One small example is the cleanliness of canals and irrigation canals. The cleanliness of the place also affects the continuity of the system in the place, such as waterways which will have an impact on the marine ecosystem. If this happens to the marine ecosystem, it will certainly be very vital for coastal communities and fishermen who work as fishermen and seaweed farmers. Most marine debris consists of plastic. This waste can be found on the beach as well as in the depths of the sea. This marine debris also has different sizes: mega, micro, and nano. This can harm marine creatures and contaminate their habitat. This global problem is getting worse over time and it is predicted that plastic waste in the ocean will triple from 2015 to 2025. The accumulation of plastic waste has a major impact on the ocean from an environmental, economic, public health and wildlife perspective. For example, nanoplastics from seafood can enter the human body through the digestive tract to the circulatory system. However, the disadvantages are not directly linked to social benefits. To prevent the dumping of plastic waste, plastic products must be designed, used and disposed of more responsibly. In this paper, we will design an arduino nano-based garbage cleaning ship that can be monitored so that it can clean up marine debris but still on a small scale. The main feature of this ship's design is the FPV camera that can monitor the surroundings and the ship is driven using a remote control via wireless NRF24L01. With the creation of this tool, it is hoped that it can facilitate the performance of beach cleaners or anyone who wants to continue to maintain cleanliness, especially in the marine sector, and can foster a sense of responsibility for the cleanliness of the environment around where we live.
THE ROLE OF TECHNOLOGY IN INCREASING COASTAL HUMAN CAPACITY
This research explores the role of information and communication technology (ICT) in enhancing human resource capacity in coastal areas. The aim is to analyze how ICT has influenced education, training, productivity, and climate change adaptation in coastal regions. The research involves statistical data analysis on internet access and interviews with coastal residents.The results show that ICT has broadened access to education and training, facilitated global knowledge exchange, and provided more efficient reference resources. Technology also plays a role in improving productivity and climate change adaptation in coastal communities.In conclusion, ICT plays a crucial role in enhancing coastal human resource capacity. Collaboration among stakeholders is key to ensuring technology is used wisely in sustainable planning and management. Keywords: information and communication technology, coastal areas, education, climate change, human resource capacity.