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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Civil Engineering Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Maritime Park: Journal Of Maritime Technology and Socienty Riset Sains dan Teknologi Kelautan
Assidiq, Fuad Mahfud
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health

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ANALISIS VERTICAL PLATE PADA VARIASI KECEPATAN ALIRAN DI LUNAS SPAR Sarifuddin, Andika; Ahmad, Rati; Assidiq, Fuad Mahfud
Riset Sains dan Teknologi Kelautan Volume 5, Nomor 2, Tahun 2022
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v5i2.24233

Abstract

The progress of human civilization today is followed by an increasing demand to meet energy needs, including the need for oil and gas. SPAR (Single Point Anchor Reservoir) is one of the offshore floating structures that is suitable and efficient for use in deep waters for drilling, production, processing, storage and as a renewable power plant. SPAR Platform consists of a cylinder that floats vertically in the water. The natural period of SPAR structures deployed in the Gulf of Mexico generally has a natural period of 60 s for pitch. Vertical Plate can be an alternative solution to reduce rotational motion so that the SPAR system becomes more stable and functions more efficiently. The research method conducted in this study is a numerical calculation method using computational fluids dynamics (CFD) application. The most turbulence flow occurs at a speed variation of 0.1 m/s, so it is concluded that not always the largest flow velocity passing through the vertical plate will also occur a lot of turbulence flow. The simulated flow velocity after passing through the vertical plate will experience turbulence and the velocity decreases due to turbulence. Changes in speed that occur in simulations with 3 speed variations of 0.1 m/s, 1 m/s, and 10m/s have the same speed change ratio of 1.52. The greatest pressure occurs in the simulation on the vertical plate that is directly exposed to the turbulence.  
PENERAPAN DIGITAL TWIN UNTUK MENGURANGI DAMPAK BENCANA Patandianan, Maraya Abisurya; Assidiq, Fuad Mahfud
Riset Sains dan Teknologi Kelautan Volume 5, Nomor 2, Tahun 2022
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v5i2.24236

Abstract

A country cannot avoid disasters, be it natural disasters or disasters caused by human carelessness. Disasters are increasing day by day. Damage and casualties are inevitable. In the industrial era 4.0, it is time to apply the latest technology to the focus of infrastructure, namely construction design and disaster prevention to reduce the amount of damage and casualties. Digital Twin (DT) is one of the promising technologies to conquer these challenges. The widespread use of Building Information Modeling (BIM) and the advent of the Internet of Things (IoT) apply DT to predict disasters by relying on historical data. This study proposes the use of DT technology due to the lack of reference, knowledge and application of this technology on real buildings or models to prevent and reduce the impact of disasters.
INVESTIGASI BENCANA ABRASI DI BERBAGAI WILAYAH MASYARAKAT PESISIR DI INDONESIA Palisu, Brian Jaya; Fiqri, Muh Rizal; Assidiq, Fuad Mahfud
Riset Sains dan Teknologi Kelautan Volume 5, Nomor 2, Tahun 2022
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v5i2.24264

Abstract

Indonesia's population is the fourth largest in the world, around 273 million in 2020. And about 60% of them live in coastal areas. Most of them rely on the existence of coastal and marine natural resources. So it is not surprising that most of the daily activities and activities are always related to the existence of resources around the coast. One of the many threats to people living in coastal environments is coastal abrasion. Coastal abrasion is the process of coastal erosion caused by the destructive power of ocean waves and currents. The damage to the coastline is due to the disruption of the natural balance in the coastal area. Abrasion can be caused by nature but also human activities can be the main cause of abrasion. Coasts in various parts of Indonesia are known to have narrowed due to abrasion in recent years. At least 400 kilometers of Indonesia's coastline has been eroded by the disaster, according to data from the Ministry of Fisheries and Maritime Affairs. Without immediate action, much of Indonesia's land is threatened with extinction in the coming years (Kompas, 2019). This disaster can have negative impacts such as damage to community settlements, pond land, and beach tourism, as well as damage to infrastructure or other facilities such as roads, houses, docks, trees, and electricity poles, socio-economic impacts, especially specifically to communities in coastal areas.
Socialization of Coastal and Marine Geohazard of Makassar City Coastal Tourism Area Rachman, Taufiqur; ., Juswan; Paroka, Daeng; Baeda, Achmad Yasir; Rahman, Sabaruddin; Paotonan, Chairul; Umar, Hasdinar; Alie, Muhammad Zubair Muis; ., Ashury; Husain, Firman; Assidiq, Fuad Mahfud
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.451

Abstract

Coastal and marine geohazard threats can occur in coastal tourism areas in Makassar City. Several coastal tourism sites in Makassar City are managed by the community, namely by the Tanjung Merdeka Community Empowerment Agency (LPM) and acts as a partner for socialisation activities. Tourism managers are still ignorant of the potential for coastal and marine geohazards, such as the lack of information on geohazard signs and the potential for accidents that lead to disasters for tourism visitors. Socialisation of coastal and marine geohazards in Makassar City's coastal tourism areas has been carried out with an increase in the average knowledge of participants by 45.3%. The increase in partner knowledge includes awareness, preparedness, and disaster response attitudes about coastal and marine geohazard phenomena in coastal tourism activities, which can ultimately encourage and realise partners as community-based tourism managers who implement early warning of disaster risk and occupational safety. Strengthening partners is realised by handing over coastal and ocean geohazard signs as an early warning of disasters that can occur at tourist sites.
PERENCANAAN AWAL DERMAGA APUNG LAKKANG M Nur, Fahrul; Paotonan, Chairul; Assidiq, Fuad Mahfud
Riset Sains dan Teknologi Kelautan Volume 7, Nomor 2, Tahun 2024
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v7i2.41715

Abstract

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.
Disaster Preparedness Psychoeducation for Students of Athirah Islamic School Umar, Hasdinar; Paotonan, Chairul; Baeda, Achmad Yasir Baeda Yasir; Rahman, Sabaruddin Rahman; Assidiq, Fuad Mahfud; Husain, Firman; Nadjmi, Nurul; Nur, Sitti Hijraini; K, Riswal; Amaliyah, Novriany; Umar, Muh. Fitrah Ramadhan; Munadiah, Nurul; Sakinah, Whina
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 2 (2024): Kolaborasi yang Kuat untuk Kekuatan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i2.469

Abstract

Makassar is one of the cities in Indonesia that is unlikely to be free from natural disasters. The problem is that the community, especially school-age children, is not yet responsive and alert and does not understand disaster preparedness's importance. Low knowledge, lack of information provision, and disaster risk management can increase the number of victims. Athirah Islamic School, one of the partners in this service, provides facilities for Psychoeducation activities for students. From this problem, a solution for disaster risk reduction is needed by giving psychoeducation (disaster mental health) and disaster preparedness around general reactions (behavior, emotion, cognition, and physical). Psychoeducation materials will be delivered by the Bosowa University psychology team, also partners in this Service activity. The implementation method of this service program includes mentoring and disaster preparedness training from a psychological perspective. The research method used in this service is experimental with a pretest-posttest design approach. The statistical analysis results showed a difference in student knowledge regarding disaster preparedness before and after participating in psychoeducation with a sig <0.05. This service concludes that the training provided to Athirah Bukit Baruga Islamic Middle School students positively impacts students' disaster preparedness knowledge.
Transplantasi Coral sebagai Aksi Peduli Lingkungan untuk Pemanfaatan yang Berkelanjutan dj, Ashury; ., Juswan; Rachman, Taufiqur; Paroka, Daeng; Baeda, Achmad Yasir; Rahman, Sabaruddin; Umar, Hasdinar; Paotonan, Chairul; Alie, Muh. Zubair; Husain, Firman; Assidiq, Fuad Mahfud; Nasir, Andi Mega Mustika
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 2 (2024): Kolaborasi yang Kuat untuk Kekuatan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i2.553

Abstract

The existence of coral reefs in Indonesia ranks first in area and type. The total area of coral reefs owned by Indonesia is 14% of the total area of coral reefs in the world. Coral reefs have an important value in life, both in terms of ecology to promising economic value. Therefore, the Department of Marine Engineering in collaboration with partners of the South Sulawesi Provincial Tourism Office held an activity “Coral Transplantation as an Environmental Care Action for sustainable use”. This activity has the aim of providing an understanding of the importance of knowledge about the economic and environmental benefits of coral reefs as a beach / sun tourism attraction for domestic and foreign tourists to visit the province of South Sulawesi, especially on Badi Island in Pangkep Regency (Pangkajene Islands). Coral reefs that have been damaged require a long time to recover, due to the slow growth rate of corals. Therefore, human intervention through various methods and means becomes indispensable to improve and rehabilitate the condition of coral reefs. One rehabilitation technique that has been widely recognized and applied in various parts of the world is coral transplantation. By using lecture and discussion methods, as well as coral reef rehabilitation efforts through the real action of coral transplantation. The results obtained showed that there was an increase in knowledge before and after the community participated in the activity and the degradation of coral reefs that occurred could be restored through transplantation of 500 donor corals. The conclusion of this activity indicates that the presentation of material in the form of lectures and discussions has increased community knowledge, and the real action of coral reef transplantation can increase coral reef colonies as a sustainable use.
Study on the Suitability Analysis of the Use of Floating Breakwaters in Palipi Fishing Port Paotonan, Chairul; Paroka, Daeng; Rahman, Sabaruddin; Ashury, Ashury; Assidiq, Fuad Mahfud; Azisah, Nur
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 21, No 3 (2024): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v21i3.65156

Abstract

Palipi Fishing Port is a fish landing port with the condition of the dock building facing directly to the open sea without any protection of the port pond. This causes fishermen to be afraid to anchor their ships at Palipi Harbor, especially during the west season. In addition, the condition of the soil bearing capacity at the seabed due to thick sediment deposits in the harbor water area makes it difficult to apply a pile-type breakwater. Therefore, in order to function optimally, Palipi Fishing Port needs to immediately have a breakwater that is suitable for its geographical conditions as a protection from ocean waves. Floating breakwater is the solution due to its floating structure and efficient in reducing waves. This research will identify the suitability between wave occurrence at Palipi Fishing Port and the effectiveness of using floating breakwater while still considering the ease of development so that it is expected that the port can function optimally for regional economic development.
Assessing Sediment Transport and Shoreline Dynamics in High-Energy Tropical Coasts Umar, Hasdinar; Paotonan, Chairul; Rachman, Taufiqur; Nur, Sitti Hijraini; Muhiddin, Amir H.; Maming, Muhammad Idhil; Andriadi, Andi M. Rezky; Assidiq, Fuad Mahfud
Civil Engineering Journal Vol. 11 No. 7 (2025): July
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-07-022

Abstract

This research examines coastal erosion in North Galesong, Indonesia, by validating longshore sediment transport (LST) equations and predicting shoreline changes over ten years. To evaluate sediment movement and coastline alterations, it integrates field data on sediment grain size and wave characteristics with numerical modeling techniques, including the CERC equation and finite difference methods. Sieve analysis revealed a range of sediment textures (D50: 0.17–0.65 mm), predominantly medium-fine sand. Wave analysis indicated a dominance of moderate energy southwesterly waves (1.5 m height, 6.39 s period) that aid sediment transport. The empirical LST models, calibrated with local data, closely matched numerical simulations (error <20%), predicting an annual net northward sediment transport of 406,869 m³. Shoreline analysis across 15 segments showed significant spatial variability: severe erosion occurred in Cell 4 (Δy = -0.82 m), while Cell 3 saw accretion (Δy = +0.68 m), influenced by wave direction, sediment supply, and coastal morphology. This study underscores the value of hybrid empirical-numerical methods in data-scarce regions and emphasizes the need for local model calibration to enhance coastal resilience. The findings inform sustainable management practices, promoting adaptive strategies to address sediment imbalances and hydrodynamic changes due to climate factors.
Configuration Comparison Catenary Spread Mooring Line On The Movement Characteristics Of Fpso Ships Using Numerical Analysis Julyardiansyah, Fadhil; Assidiq, Fuad Mahfud
Maritime Park: Journal of Maritime Technology and Society Volume 3, Issue 1, 2024
Publisher : Department of Ocean Engineering, Faculty of Engineering, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/mp.v3i1.31739

Abstract

Abstract: FPSO (Floating Storage Production and Offloading) is a floating structure that can be used as a location for production, storage or offloading of offshore oil and gas. Therefore, FPSO plays an important role in the exploration of oil fields in the deep sea. When operating, the FPSO will be exposed to environmental loads that can cause it to operate flexibly. To reduce movement response and maintain the FPSO in position, a mooring system is needed. The aim of this research is to analyze the numerical results of this experiment to find RAO (Response Amplitude Operator) free movement (free floating) as well as motion trajectory (surge & sway), motion characteristics, mooring line stress based on variations in the number of ropes used when moored with the direction of loading (heading) from different directions with time domain 250 seconds for each identification. This comparison analysis uses software Boundary Element Method (BEM) with data on FPSO dimensions, type of rope and mooring system, as well as environmental loads that influence the movement of the FPSO structure. The results of the analysis obtained show that in essence the use of the number of mooring lines will greatly influence the movement characteristics, the trajectory/flow of the floating structure and the tension of the mooring ropes. Where, the fewer the number of ropes used, the greater the movement and tension of the resulting rope and vice versa. Usually due to the mass of mooring line which is influenced by the number of ropes not being the same or smaller than displacement FPSO and is also influenced by environmental forces or loads which have repeated patterns over a certain time so that the amount used mooring line must also consider all aspects of the environment in its planning.
Co-Authors ., Ashury Ahmad, Rati Alie, Muh. Zubair Andriadi, Andi M. Rezky Ashury, Ashury Aulia, Nur Salsabila Azisah, Nur Ba Naga, Mohammed Hussein Baeda, Achmad Yasir Baeda Yasir Chairul Paotonan Daeng Paroka dj, ashury Fiqri, Muh Rizal Firman Husain Hasdinar Umar Julyardiansyah, Fadhil Juswan . K, Riswal M Nur, Fahrul Maming, Muhammad Idhil Muhammad Zubair Muis Alie Muhiddin, Amir H. Munadiah, Nurul Nadjmi, Nurul Nasir, Andi Mega Mustika Novriany Amaliyah Palisu, Brian Jaya Patandianan, Maraya Abisurya Purnama, Bulan Rahman, Sabaruddin Rahman Ramadani, Anisa Eka Sabaruddin Rahman Sade, Juswan Sakinah, Whina Saparuddin, Sulkifli Sarifuddin, Andika Sitti Hijraini Nur Taufiqur Rachman Umar, Muh. Fitrah Ramadhan