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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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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.
Comparative Numerical Analysis Fatigue Damage Based On Variation In Quantities Mooring Line On Aker Smart 2 FPSO Aulia, Nur Salsabila; 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.v3i1.32980

Abstract

The Aker Smart 2 FPSO is the second FPSO from the Norwegian FPSO operator: Aker Floating Production, and will operate for Reliance in India. This FPSO will be moored with a mooring system catenary to the seabed. In its operation, the FPSO will be influenced by dynamic loads such as sea waves, ocean currents and wind on the mooring rope structure periodically. This may cause damage to the structure mooring line which influences the performance of the operational structure. The aim of this research is to investigate motion trajectory (surge & sway), mooring line stress, and deterministic fatigue on the mooring system catenary by making comparisons using variations in quantities mooring line. Dimensions mooring line type chain on fairlead with varying amounts mooring line namely 4x1, 4x2, and 4x3 which will then be analyzed fatigue damage-his. Numerical observations of FPSO motion on following seas, stern quartering seas, beam seas, bow quartering seas, and head seas show Response Amplitude Operator from movement surge, sway, heave, roll, pitch, and yaw due to harsh environments with Hs = 2.0 meters and T = 12 seconds. Observation Motion Trajectory it is found that the greater the number mooring line then value DOffset or movement surge & sway will get smaller. Meanwhile, in observation Mooring Line Stress and Fatigue Damage obtained both are directly proportional where the greater the tension mooring line the greater the damage. This is because the mass of the rope used is not proportional to displacement boat. And in this numerical analysis simulation it only reaches the initial movement, namely at 100 seconds, where the ship's condition has not yet reached the stable condition it should be.
Analysis of the Effect of Using Concrete Mattresses on Subsea Pipelines Risal, Risal; Sade, Juswan; Assidiq, Fuad Mahfud
Maritime Park: Journal of Maritime Technology and Society Volume 3, Issue 2, 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.v3i2.35390

Abstract

This Leaks in oil and gas pipes under the sea will cause pollution and threaten the ecosystem in the sea. Damage to underwater pipes caused by anchors has quite a large percentage, therefore good prevention efforts are needed so that leaks do not occur which have a negative impact on environment and economy. The aim of this research is to find out how the strength compares between pipes that use protective concrete mattresses and pipes without protective concrete mattresses when hit by ship anchors. This research uses explicit dynamic simulation using Finite Element Method software. Based on explicit dynamic analysis, deformation values ​​and equivalent stress values ​​are obtained after being hit by an anchor at a speed of 5,491 m/s. For unprotected pipes experiencing significant damage, when viewed from the deformation values ​​obtained, namely amounted to 0.143 m, while for the pipe model with protection the deformation value obtained was 0.0769 m. For pipes without protection and pipes that use protection with a thickness of 0.15 m, the deformation value is both above the maximum value that has been determined, namely 10% of the diameter value and when viewed from the equivalent stress value, for pipes without protection the equivalent stress value is obtained. namely 1,150 MPa, while the pipe that uses a protector is 240 MPa, the equivalent stress value obtained by the pipe using a protector is below 780 MPa, which means that the use of pipe protectors is quite effective in reducing damage that occurs to the pipe.
Introduction to the Marine World and Coastal Engineering for Students of Athirah 2 Islamic Elementary School Makassar Through Interactive Educational Media Umar, Hasdinar; Paotonan, Chairul; Baeda, Achmad Yasir; Rachman, Taufiqur; Rahman, Sabaruddin; Djamaluddin, Ashury; Husain, Firman; ., Juswan; Assidiq, Fuad Mahfud; Mustika, Andi Mega; A. Narayana Jufri, Muhammad Fauzan; Ikram, Andi Muhammad; Ramadhan Umar, Muhammad Fitrah
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 2 (2025): Collaboration for Accelerated Community Achievement
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i2.617

Abstract

Makassar City is one of the cities with a coastal area located in its center. However, many people, especially young children, still do not understand the importance of the sea, marine technology, and its role in their lives. The low level of understanding is due to the lack of information provided about the ocean world and coastal engineering. Athirah 2 Islamic Elementary School, which is one of the partners in this community service, provides facilities for the Introduction to the Ocean World and Coastal Engineering activity. This community service activity aims to introduce the basic concepts of the ocean world and coastal engineering through a fun and interactive approach that is adapted to the age of elementary school students. This activity will be carried out in 6 sessions, namely Session 1: Opening, Introduction, and Pre-test; Session 2: Introduction to the Sea and Marine Engineering; Session 3: Simple Experiments; Session 4: Educational Games; Session 5: Reflection and Post-test; and Session 6: Closing and Documentation. After this activity is carried out, an initial awareness is formed in students about the importance of protecting the sea as part of a shared responsibility. The students were enthusiastic about learning about ocean engineering and coastal engineering, eager to learn about the ocean and coastal structures. The pre- and post-test results showed an increase in the students' understanding of ocean engineering and coastal engineering.
Co-Authors ., Ashury A. Narayana Jufri, Muhammad Fauzan Adnan, Ardhina Dian Islamiati Ahmad, Rati Alie, Muh. Zubair Amffa, Muhammad Azka Bintang Andriadi, Andi M. Rezky Anugrah, Pahrizah Puji Arsy, Muhammad Fadhil Ashury, Ashury Aulia, Nur Salsabila Azisah, Nur Azkhar, Muh. Aiman Fatwa Ba Naga, Mohammed Hussein Baeda, Achmad Yasir Baeda Yasir Chairul Paotonan Daeng Paroka Dengen, Raina Shelomita dj, ashury Djamaluddin, Ashury Fachrul, Muhammad Farisi, Andi Hamril Vikri Al Fiqri, Muh Rizal Firman Husain Fitriani, Reskyah Hasana, Sitti Hasdinar Umar Ikram, Andi Muhammad Imtiyaz, Nisrina Julyardiansyah, Fadhil Juswan . K, Riswal M Nur, Fahrul Maming, Muhammad Idhil Muhammad Zubair Muis Alie Muhiddin, Amir H. Munadiah, Nurul Mustika, Andi Mega Nadjmi, Nurul Nasir, Andi Mega Mustika Novriany Amaliyah Nur, Fahrul Muhammad Nurtika, Dijah Palisu, Brian Jaya Patandianan, Maraya Abisurya Purnama, Bulan Putri, Khurin Putri, Santa Rahman, Sabaruddin Rahman Ramadani, Anisa Eka Ramadhan Umar, Muhammad Fitrah Sabaruddin Rahman Sade, Juswan Sakinah, Whina Saparuddin, Sulkifli Sarifuddin, Andika Selviani, Selviani Simanjuntak, Musdalifah Akbar Sitti Hijraini Nur Sulfa, A. Muhammad Fauzan Sutopo, Raihan Firdaus Syerly Klara Taufiqur Rachman Umar, Muh. Fitrah Ramadhan Virandika, Cece Zahirah, Nabilah Rezky Putri