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All Journal Dinamika Bahari: Journal of Maritime Dynamic ARMATUR : Artikel Teknik Mesin dan Manufaktur Kolaborasi: Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat
Widar Bayu Wantoro
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Education Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Transportation

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Implementasi Bunker Safety Checklist Untuk Meningkatkan Keselamatan dan Pencegahan Pecemaran Selama Bunkering Susanto; Khaeroman, Khaeroman; Widar Bayu Wantoro; Putranto, Wahyu Ari Putranto
Dinamika Bahari Vol 5 No 2 (2024): October 2024 Edition
Publisher : Politeknik Ilmu Pelayaran Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46484/db.v5i2.519

Abstract

Bunkering on ships is a very important job with a high risk of danger. Bunkering is moving liquid fuel oil from a bunker barge or bunker terminal. The process of transferring oil has the potential to cause pollution. Pollution can occur if an operational error occurs, such as an overflow, pipe, or bunker hose breaking. Overflow is one factor that most contribute to oil spills during the bunkering process. Oil overflow incidents by ships can result in expensive claims, with cleanup costs, penalties, and environmental damage running into millions of dollars. Studies to reduce the risk of oil pollution from bunkering operations need to continue. This study was carried out to know the implementation of the bunker safety checklist. The study was conducted using a case study method strengthened by a literature study. The study was conducted on board MT. Fatmawati with Dead Weight Tonnase (DWT) 7762 metric tons. The ship is driven by a diesel engine with a power of 2721 kW at 195 RPM. The 100% HFO capacity stored on board is 531.44 m3. The ship can also carry an HSD of 119.77 m3 at 100% capacity—security and safety considerations. The maximum fuel capacity that can be loaded is in the range of 80 - 90%. The study results obtained by implementing the bunker safety checklist in bunkering activities are highly recommended. Bunkering will be well planned, from planning, estimating the fuel loaded, and executing to reporting. Safety requirements and pollution prevention due to oil spills can be avoided with work planned and recorded in a checklist.
Pembuatan Pakan Ikan Pada Kelompok Budidaya Ikan di Ungaran Untuk Mengurangi Biaya Produksi Deri Herdawan; Sri Tutie Rahayu; Susanto Susanto; Widar Bayu Wantoro; Noviarianto Noviarianto; Arif Rakhman Suharso; Wahyu Ari Putranto; Nur Kholis
Kolaborasi : Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat Vol. 2 No. 2 (2024): Juni : Kolaborasi : Jurnal Hasil Kegiatan Kolaborasi Pengabdian Masyarakat
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/kolaborasi.v2i2.113

Abstract

This community service program is carried out in Beji Village, East Ungaran District, which is around the Indonesian State Maritime Polytechnic campus. This activity is a continuation of the previous service roadmap in the same place where in the previous service activity, making fish food using a pellet molding machine using a petrol motor, this time making fish food using a manual fish pellet molding machine. The aim is to introduce MSME service partners to the fish cultivation group in Beji sub-district about the types of fish pellet molding machines so that they can meet fish feed needs to save production costs. The method for implementing this activity is by providing training by sharing knowledge about the parts of the fish pellet molding machine and the composition of the ingredients that make up good fish feed, followed by the practice of making fish feed using a manual pellet molding machine.
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
Co-Authors Arif Rakhman Suharso Deri Herdawan Erwin Sutantyo Gunawan Budi Santoso Khaeroman, Khaeroman Marselia, Marselia Mohammad Haris Irsyam Sah Noviarianto, Noviarianto Nur Kholis Solly Aryza Sri Tutie Rahayu Susanto -, Susanto Susanto Susanto Susanto Susanto Wahyu Ari Putranto Yulius Oscar