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WAKTU EVAKUASI MAKSIMUM PENUMPANG PADA KAPAL PENYEBERANGAN ANTAR PULAU Paroka, Daeng
Wave: Jurnal Ilmiah Teknologi Maritim Vol 7, No 2 (2013)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (627.361 KB) | DOI: 10.29122/jurnalwave.v7i2.3200

Abstract

Korban jiwa pada kecelakaan kapal dapat terjadi akibat kesulitan untuk mengevakuasi penumpang akibat kepanikan, kelebihan penumpang serta dimensi serta rute dari jalur evakuasi yang tidak memungkinkan untuk mengevakuasi penumpang dalam waktu yang singkat.Paper ini mengevaluasi waktu evakuasi berdasarkan standar IMO apabila terjadi kebocoran satu atau beberapa kompartemen secara bersamaan. Waktu kebocoran diestimasi dengan memakai prinsip Bernoulli. Jalur evakuasi dianggap layak apabila waktu evakuasi yang dibutuhkan lebih kecil dari waktu kebocoran. Hasil perhitungan dan analisis menunjukkan bahwa kebocoran pada kompartemen tertentu dengan luas penampang bocor yang besar dapat mengakibatkan penumpang tidak dapat dievakuasi sebelum kapal kehilangan stabilitas atau tenggelaman. Oleh karena itu, penentuan jalur evakuasi hendaknya tidak hanya mempertimbangkan kasus kebakaran tetapi juga bentuk kecelakaan lain yang mungkin terjadi di kapal seperti masalah kebocoran
Maneuverability of Ships with small Draught in Steady Wind Paroka, Daeng; Muhammad, Andi Haris; Asri, Syamsul
Makara Journal of Technology Vol. 20, No. 1
Publisher : UI Scholars Hub

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Abstract

Wind force and moment may force a ship to drastically decrease its speed and use a large drift angle as well as a large rudder angle in order to maintain its course. Ships with a small draught might have more risk in maneuvering to its point of view compared with a ship with a larger draught. This paper discusses maneuverability of a ship with a small draught in steady wind. The effect of wind on ship speed, drift angle, and rudder angle are investigated in a steady state condition. Five different ratios of wind velocity to ship speed from 1.0 to 20.0 are used in the simulation. The variation in wind direction is examined from 0° to 180°. Results of the numerical simulation show that the wind has a significant effect on the reduction in ship speed with a wind direction less than 100°. The drift angle increases due to increasing wind velocity in the same wind direction. Wind direction also has a significant effect on the drift angle especially when the wind direction is less than 140°. The same phenomenon was found for the rudder angle. The necessary rudder angle is greater than the maximum rudder angle of the ship when the wind direction is 60° with a wind velocity to ship speed ratio of 20 or more.
Experimental Study on Automatic Control for Collision Avoidance of Ships Paroka, Daeng; Kamil, Muhammad Fahmi; Muhammad, Andi Haris
Makara Journal of Technology Vol. 21, No. 3
Publisher : UI Scholars Hub

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Abstract

Automatic control system is widely applied to control the ship direction or heading angle in accordance with the decided trajectory. Several methods for improving performance of control system have been developed such as Proportional-Integral-Derivative (PID) control and fuzzy logic based control. Within the last decade, application of automatic control system is not only for ship navigation but also for avoiding collision risk of ships in seaways. This paper discusses the application of automatic control system for avoiding ship collision by free running experiment. Fuzzy logic based control was developed using Mamdani Centroid method to estimate the necessary rudder angle in order to change the ship heading angle. Collision scenario was designed using four fixed obstacles with a certain distance which will be avoided by ship model. The results of free running experiment showed that the automatic control system can minimize the risk against collision or at least provide initial warning that may be faced by the ship. with minimum distance of 3.50 of length between perpendicular. To improve performance of control, external disturbance such as wind and wave should be considered in the design of automatic control system.
ANALISIS KEKUATAN ANCHOR CROWN SHACKLE PADA FPU MADURA STRAIT DENGAN VARIASI SUDUT MOORING LINE Ismail, Imam; Paroka, Daeng; Alie, Muhammad Zubair Muis
Riset Sains dan Teknologi Kelautan Volume 4, Nomor 1, Tahun 2021
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v4i1.19395

Abstract

Floating produciton unit Madura Strait yang akan disingkat FPU adalah suatu struktur terapung yang berfungsisebagai unit produksi minyak dan gas yang akan diletakkan pada selat madura yang akan ditambatkan secaracatenary kepada jangkar di dasar laut. Selama pengoperasiannya FPU akan mengalami pergerakan secara terus menerus akibat hasil respon terhadap beban dinamis yang menghantamnya. Hal ini akan berisiko kepada gagalnya mooring line. Selain mooring line, kekuatan penyambung rantai juga menjadi salah satu struktur yang mesti diperhatikan, yaitu anchor crown shackle dan conecting link. Dalam penelitian kali ini bertujuan menganalisakekuatan dari anchor crown shackledan connecting link, yang didahulukan dengan mencari nilai tension terbesar dengan melakukan analisa time domain terhadap mooring line dengan variasi beberapa sudut antar mooring linepada kondisi ULS dan ALS. Hasil analisanya menunjukkan bahwa variasi sudut antar mooring line sebesar 5° adalah yang paling aman bagi FPU karena memiliki akumulasi nilai RAO yang rendah dan safety factor mooring line yang paling tinggi secara akumulasi dalam kondisi ALS dan ULS dibanding variasi yang lain. Untuk kekuatan anchor crown shackle dan connecting link, hasil analisa dengan menggunakan beban sebesar 2500kN akibat tension maksimum yang dihasilkan oleh mooring line pada kondisi ALS menunjukkan nilai tegangan maksimum 278.54 Mpa yang berarti nilainya lebih kecil dari 90% yield strength material (417.42 Mpa) dan deformasi terbesar 0.00024 m untuk anchor crown shackle dan 0.00034 untuk connecting link yang berarti masing – masing nilainya kurang dari 5% diameter struktur (0.01 m) sehingga struktur tersebut dapat dikatakan aman menurut standar yangdiizinkan oleh ABS.Kata kunci: FPU, tension, RAO, von mises stress, anchor crown shacle, connecting link.
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.
Socialisation of the Blue Economy Concept in the Development of Coastal Tourism Areas in Makassar City Rachman, Taufiqur; ., Juswan; Paroka, Daeng; Muis Alie, Muhammad Zubair; Purnama, Bulan; ., Ardi
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 1 (2024): Community Development
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i1.453

Abstract

Indonesia is one of 193 countries committed to the sustainable development goals (SDGs). In this new paradigm of sustainable Indonesian development, the maritime sector is a priority for future development with the concept of blue economy, which is a sustainable ocean economy that produces economic and social benefits with the assurance of long-term environmental sustainability. The focus of the blue economy with this maritime economic strategy makes coastal communities the centre of blue economy growth. Makassar City has a coastal tourism area located in Tanjung Merdeka Village, Tamalate District Makassar, and is managed community-based by Non-Governmental Organizations (NGO) of Tanjung Merdeka. To maintain the sustainability process of coastal tourism area management, it is necessary to understand the concept of blue economy according to the maritime development strategy. Socialisation of the concept of blue economy in the development of coastal tourism areas in Makassar City has been carried out and achieved an increase in knowledge and understanding of participants by 50%. Understanding the concept of sustainable coastal and marine resource management, as well as how to participate in facing the challenges of environmental degradation and climate change, will complement the role of Tanjung Merdeka NGO as a tourism manager with the concept of blue economy. Assessment of the application of the concept of blue economy in coastal tourism areas has been carried out and fulfils the concept of blue economy according to Pauli's theory (2010).
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.