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All Journal Jurnal Pendidikan dan Konseling Dinamika Bahari: Journal of Maritime Dynamic Saintara : Jurnal Ilmiah Ilmu-Ilmu Maritim ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Maritim Polimarin SOROT: Jurnal Pengabdian Kepada Masyarakat Kolaborasi: Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat Konstruktivisme : Jurnal Pendidikan dan Pembelajaran
Widar Bayu Wantoro
Politeknik Maritim Negeri Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Analysis of The Effects of Bad Weather on The Use of Dynamic Positioning to Support Offshore Operations of AHTS Vessels. OPS AORA Widar Bayu Wantoro; Mohammad Haris Irsyam Sah; Susanto, Susanto; Marselia, Marselia; Erwin Sutantyo
Dinamika Bahari Vol 6 No 2 (2025): October 2025 Edition
Publisher : Politeknik Ilmu Pelayaran Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46484/db.v6i2.1294

Abstract

AHTS vessels are tasked with performing heavy-duty operations such as towing and deploying anchors, which are critical steps in the installation and relocation of platforms at designated locations. The Dynamic Positioning System (DPS) consists of several separate modules, each performing its specific function, and collectively counteracting environmental disturbances such as wind, currents, and waves. The operation of the dynamic positioning system is carried out by the captain, assisted by ship officers who hold DPO certification. As the DP system operator, the DPO is responsible for monitoring, evaluating, and controlling the performance of the DP system to ensure the vessel remains stable and in the correct position during operations in waters with adverse weather conditions. This study was conducted to investigate Dynamic Positioning (DP) on the AHTS vessel OPS AORA, which was operating suboptimally. The adverse weather conditions caused the vessel to lose its position. This incident disrupted the vessel's operations during DP operations at the Borr Thor offshore rig in the Bukit Tua Field of Petronas. The study was conducted using a qualitative case study approach. The impact of adverse weather conditions on the Dynamic Positioning (DP) system in the context of offshore AHTS vessel operations was explored through interviews with experienced masters and officers. The research findings revealed that sensor and navigation malfunctions, reduced thruster efficiency, and decreased vessel stability caused the DP system to lose accuracy, potentially leading to position failure and increased accident risks. The implementation of technical and procedural mitigation strategies, such as sensor redundancy, real-time monitoring of sea conditions, and enhancing operator competence, can effectively control the negative impacts of adverse weather conditions.
Pengaruh variasi Tekanan dan level air tangki Hydrophore terhadap laju aliran massa pada sistem distribusi air tawar -, Susanto; Gunawan Budi Santoso; Yulius Oscar; Wahyu Ari Putranto; Widar Bayu Wantoro
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10786

Abstract

The paper is The performance of water distribution in buildings is strongly influenced by the relative position of the reservoir and the outlet pipe. This represents an important technology transfer for enhancing building services engineering. This study examines the performance of a hydrophore system under variations in pipe height, water level, and tank pressure. Experiments were conducted using pipe heights of 1, 2, and 3 meters; water levels of ¼, ½, and ¾ of the tank capacity; and tank pressures of 1, 2, and 3 bar. Pressure adjustments were made by adding or releasing compressed air. System performance was evaluated by measuring the mass flow rate through one, two, and three outlet pipes operated individually and simultaneously. The highest mass flow rate for a single outlet pipe was achieved at a ½ water level and 3 bar pressure, yielding 67.87 kg/min through outlet pipe 2. For two outlet pipes, the maximum values were obtained at a ¼ water level and 3 bar, producing 72.75 and 73.25 kg/min. With all three outlets open, the highest flow rate reached 79.69 kg/min at a ½ water level and 3 bar. Overall, water level, tank pressure, pipe height, and the number of open outlets significantly affect distribution performance and must be considered in system design for multi-level buildings
Rancang Bangun Prototype Sistem Tangki Hydrophore Kapal Niaga sebagai Alat Praktikum Mata Kuliah Permesinan Bantu Khaeroman; Susanto; Widar Bayu Wantoro
Saintara: Jurnal Ilmiah Ilmu-Ilmu Maritim Vol 9 No 1 (2025): SAINTARA (Maret 2025)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Akademi Maritim Nusantara Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52475/saintara.v9i1.369

Abstract

Fresh water on the ship must flow from the lowest compartment in the engine room to the top of the platform. The pressure tank, or hydrophore, is a freshwater distribution system widely used in multi-storey buildings, including ships. Hydrophores are used in multi-storey building construction, including on ships, only as temporary holding tanks. The system acts to raise water from storage tanks or wells that are located lower. These systems need to be operated and maintained by competent people. The competence of competent crew members will be able to overcome the problems that occur. Issues that arise in the hydrophore system are very diverse. However, one thing that impacts a hydrophore system disruption is that the supply of fresh water to the entire ship is disrupted or does not flow. The purpose of this study is to design a hydrophore system so that it becomes a prototype that can be used for learning. When the hydrophore prototype has become a practical medium, it can be used as an engineering tool to study many phenomena. The results of the study can be concluded that when water flows through 1 pipe alternately, the pressure difference with the tank is about 0.1 - 0.2 bar. When water is flowed through 2 pipes, the pressure difference with the tank is about 0.2 - 0.4 bar. There is a pressure differential of roughly 0.2 to 0.5 bar when three flow pipes are opened at the same time.
Co-Authors Anwar, Amthori Arif Rakhman Suharso Ario Hendartono Deri Herdawan Dhesi Wulan Sari Dwi Ratnandari, Septina Erwin Sutantyo Erwin Sutantyo Evi Sirait Evie Sirait Fafa Bagaskoro Faizal Reza, Bela Fitri Suprapti Gunawan Budi Santoso Heri Kiswanto Janes Ginting, Harjun Khaeroman Khaeroman, Khaeroman Kusumartono, Tony Marselia, Marselia masriah masriah, masriah Mohammad Haris Irsyam Sah Noviarianto, Noviarianto Nur Kholis Prijo Harsono Purwanto Purwanto Purwanto Rahindra Bayu Kumara Sirait, Evi Solly Aryza Sri Tutie Rahayu Suprapti, Fitri Susanti Susanti Susanti Susanti Susanto Susanto Susanto Susanto Wahyu Ari Putranto Yulius Oscar