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All Journal Infotekmesin 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 Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia 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 Health Professions 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.
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.
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
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
Pengoptimalan Perawatan Deepwell Cargo Pumps untuk Memperlancar Kegiatan Bongkar di MT. Prima Lautan 1 Anita Rahayu; Fitri Suprapti; Kirtyana Nindita; Widar Bayu Wantoro
Jurnal Maritim Polimarin Vol. 12 No. 1 (2026)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v12i1.173

Abstract

This study aims to identify factors causing decreased performance of the deepwell cargo pump and the maintenance measures taken to prevent delays in the unloading process on the MT Prima Lautan 1. The research method used was qualitative descriptive, with data collected through observation, interviews, and literature review during practical activities at sea. The results showed that the main factors causing delays in the unloading process on the MT Prima Lautan 1 were inadequate performance of the deepwell cargo pump, and suboptimal maintenance. In addition to technical aspects, it was found that the crew's lack of understanding of maintenance procedures also exacerbated the damage. To address this problem, a series of steps can be taken, such as maintenance and lubricating the deepwell cargo pump, which can improve its performance. Consistent implementation of a planned maintenance system in accordance with the manual and company's SMS can improve the efficiency and safety of ship operations. Therefore, this study emphasizes the importance of preventive maintenance and ongoing training for ship crews to reduce the risk of damage and operational delays.
Strategi Pemeliharaan Komponen Kritis Hatch Cover Berbasis Reliability Centered Maintenance (RCM) dalam Mendukung Keandalan Operasional Kapal Andre Sofian; Erwin Sutantyo; Purwanto Purwanto; Rahindra Bayu Kumara; Widar Bayu Wantoro; Irsat Surya Sekti
Jurnal Maritim Polimarin Vol. 12 No. 1 (2026)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v12i1.177

Abstract

The hatch cover is an important component on bulk carrier vessels that supports cargo protection and loading-unloading operations. Damage to the hatch cover may disrupt operational activities, increase accident risks, and cause delays in coal distribution. This study aims to analyze hatch cover maintenance and identify critical components with the potential for failure. The research used a mixed-method approach through Reliability Centered Maintenance (RCM). Data were collected through observations, documentation, and questionnaires distributed to ship crews. The analysis methods included Functional Block Diagram (FBD), Failure Mode and Effects Analysis (FMEA), Logic Tree Analysis (LTA), and task selection. The results showed that the hydraulic pipe was the most critical component, with the highest Risk Priority Number (RPN) value of 576 due to leakage causing unstable hydraulic pressure. Other components, such as the hydraulic jack, hatch cover wheels, and chain, also showed significant failure risks affecting hatch cover performance. The recommended maintenance actions include periodic inspections, routine maintenance, and replacement of damaged components. Proper implementation of maintenance is expected to improve hatch cover reliability, operational safety, and the efficiency of bulk carrier operations.
Analisis Keandalan Sistem Transfer Bulk Menggunakan Metode Reliability Centered Maintenance (RCM) Erwin Sutantyo; Purwanto Purwanto; Rahindra Bayu Kumara; Widar Bayu Wantoro; Irsat Surya Sekti; Wahyu Ari Putranto
Infotekmesin Vol 17 No 2 (2026): Infotekmesin: Juli 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/

Abstract

The Bulk Transfer System on Supply Vessels plays a crucial role in supporting offshore logistics, particularly in transferring bulk cement to drilling facilities. The system operates on pneumatic principles and is influenced by compressors, piping networks, mechanical components, and control devices. However, the current maintenance approach remains reactive, increasing the risk of recurring operational failures. This study aims to evaluate system reliability and determine an optimal risk-based maintenance strategy using Reliability Centered Maintenance (RCM). The analysis includes system function identification, Failure Mode and Effect Analysis (FMEA), and Logic Tree Analysis (LTA). The results show that the transfer pipeline has the highest risk (RPN 48), followed by the air compressor unit, air receiver tank, and safety system (RPN 36). LTA indicates that most failures are evident with Operational Consequences, while safety system failures are categorized as Safety Consequences. The application of RCM effectively improves overall system reliability.
Penguatan Kapasitas UMKM di Tengah Tren Blue Economy melalui Strategi Marketing dan Hukum Niaga Rahindra Bayu Kumara; Marselia Marselia; Prijantono Dillyanto; Widar Bayu Wantoro; Erwin Sutantyo
Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia Vol. 5 No. 3 (2026): September : Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/karunia.v5i3.4645

Abstract

This Community Service Program aimed to enhance the capacity of Micro, Small, and Medium Enterprises (MSMEs) in Kupang Village, Ambarawa District, by strengthening branding, digital marketing, business legality, and the application of blue economy principles. Initial assessments identified challenges related to product identity, online promotion, legal compliance, and sustainable business practices. The program employed training, workshops, focus group discussions, and technical mentoring involving lecturers and students from the Indonesian Maritime Polytechnic (Polimarin). Key activities included packaging design, product storytelling, digital business profile development, assistance with Business Identification Number (NIB) registration, commercial contract preparation, and blue economy education.The program resulted in the branding assessment of 15 MSME products, intensive mentoring for one MSME in developing its brand identity, the establishment of digital marketing profiles by several participants, and improved understanding of commercial contracts and business legality. Participants also demonstrated increased awareness of sustainable business practices aligned with blue economy principles. Overall, the program successfully improved the marketing, legal, and sustainability capacities of local MSMEs while fostering collaboration between Polimarin and the village government to support more competitive and sustainable enterprises.
Co-Authors Andre Sofian Anita Rahayu 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 Irsat Surya Sekti Janes Ginting, Harjun Khaeroman Khaeroman, Khaeroman Kirtyana Nindita Kusumartono, Tony Marselia Marselia Marselia, Marselia masriah masriah, masriah Mohammad Haris Irsyam Sah Noviarianto, Noviarianto Nur Kholis Prijantono Dillyanto Prijo Harsono Purwanto Purwanto Purwanto Rahindra Bayu Kumara Sirait, Evi Sri Tutie Rahayu Suprapti, Fitri Susanti Susanti Susanti Susanti Susanto Susanto Susanto Susanto Wahyu Ari Putranto Yulius Oscar