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All Journal Emerging Science Journal Maritime Park: Journal Of Maritime Technology and Socienty Riset Sains dan Teknologi Kelautan
Sade, Juswan
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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 1 
Analysis Of The Placement And Needs Of General Cargo Ship Tanks With DWT 3650 Tons Sade, Juswan
Maritime Park: Journal of Maritime Technology and Society Volume 1, Issue 3, 2022
Publisher : Department of Ocean Engineering, Faculty of Engineering, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.463 KB) | DOI: 10.62012/mp.v1i3.21979

Abstract

The double bottom can enhance the ship's safety and a ballast tank. If the ship crashes into a rock and the outer bottom plate is torn, the watertight top tank will limit/protect the cargo from damage caused by water. The tank is a cargo storage container and is the central part of the liquid and gas transport vessel so that the cargo is maintained and safe. As a storage medium, the tank will always get a load from inside or outside the tank—calculating tank requirements using Simpson's approach. From the calculation results obtained fuel tank obtained 68,354 m3, and the diesel oil tank obtained 14,758 m3. The lubricating oil tank obtained 17,566 m3. The freshwater tank obtained 72,815 m3, and the Ballast tank obtained 356,098 m3.
Analysis Of Needs And Placement Of Zinc Anode For New Ferry Ship Buildings Syaifullah, Muh.; Sade, Juswan; Paroka, Paroka
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.v3i2.35389

Abstract

Marine structures (ships, offshore platforms, underwater pipes and other floating structures) in operation are not protected from corrosion. One of the biggest sources of damage to ships is caused by seawater corrosion. Until now, the use of iron and steel as the main materials for shipbuilding is still dominant. Corrosion is a degradation process of a metal due to chemical reactions between the metal and its environment. The aim of this research is how to determine the need for zinc anode and efficient installation distance as well as the costs required in procuring cathodic protection. Cavitation is a factor that often occurs around propellers or propellers. When the propeller or propeller rotates in the water, the low pressure around the surface of the propeller can cause water vapor to form and turn into cavitation bubbles. When these bubbles burst, the erosion effect on the surface of the affected object will quickly corrode. So that the installation of the sacrificial anode at the stern is installed slightly tightly. The method used to control the rate of corrosion is by protecting the steel plate using cathodic protection. Therefore, every ship that is built needs to have zinc anode planning to control the rate of corrosion on the ship's steel plates. The number of zinc anodes required for a new construction ship with a length of 72.76 m, a width of 14 m and a draft height of 3.30 m is 55 with an addition of 30% of the total number at the stern due to the cavitation factor. The design life of the zinc anode protection is 2.5 years with a longated flush mounted (welded type) type s-8, dimensions (300 mm × 150 mm × 25 mm) weighing 8 kg. The installation distance is 3 m and 1.3 m with the installation cost being IDR. 40,530,000.
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.
Nano Material Innovation in Enhancing Corrosion Resistance of Offshore Structures Sade, Juswan
Maritime Park: Journal of Maritime Technology and Society Volume 3, Issue 3, 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.v3i3.39554

Abstract

Offshore structures are constantly exposed to the corrosive marine environment, causing significant material degradation and potentially jeopardizing structural integrity. This research explores recent innovations in nanomaterial technology to improve the corrosion resistance of offshore structures. The main focus is given to the development of nano-composite coatings incorporating metal oxide nanoparticles and carbon nanotubes. An electrophoretic deposition method was used to apply the coatings on steel substrates, followed by characterization using scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). Results showed a significant improvement in corrosion resistance, with the nano-composite coatings exhibiting a reduction in corrosion rate of up to 85% compared to conventional coatings. In addition, these coatings exhibited superior adhesion and abrasion resistance in simulated extreme marine conditions. These findings highlight the great potential of nanomaterials in extending the service life and improving the reliability of offshore structures, with important implications for the oil and gas and offshore renewable energy industries.
Stakeholder Engagement Based Moral Hazard Analysis Model in FPSO-Tanker Oil Transfer Palippui, Habibi; Rosyid, Daniel M.; Silvianita; Sade, Juswan
Emerging Science Journal Vol. 9 No. 5 (2025): October
Publisher : Ital Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/ESJ-2025-09-05-022

Abstract

This study aims to address moral hazard risks in FPSO-tanker oil transfer operations by introducing a semi-quantitative model rooted in stakeholder engagement theory. The model, named SEMHAM (Stakeholder Engagement-based Moral Hazard Analysis Model), incorporates four engagement indicators to calculate the total involvement percentage (PTI): Occurrence Frequency Value (OFV), Responsibility Weight Value (RWV), Critical Role Value (CRV), and Process Impact Value (PIV) to calculate the Total Involvement Percentage (PTI). This metric quantifies the behavioral influence of each stakeholder in the offloading process. Using operational data from 17 offshore zones based on Pertamina's 2023 report, eight primary stakeholder roles were evaluated using a weighted activity matrix. The findings indicate that FPSO Crew and Ship Crew possess the highest PTI scores, signifying greater control and potential risk, whereas administrative actors such as agents and port authorities were identified as lower-risk participants. The SEMHAM model facilitates risk classification and recommends appropriate digital oversight, including IoT-based monitoring, smart contracts, and role-based dashboards. This approach enables the integration of behavioral risk metrics into digital governance systems, thus supporting real-time operational monitoring. The model also demonstrates potential scalability to more complex offshore energy domains, such as LNG terminals and deepwater operations, enabling broader stakeholder governance beyond the current FPSO-tanker context.
STRATEGI MANAJEMEN RISIKO DALAM PEMELIHARAAN INFRASTRUKTUR MARITIM UNTUK KESELAMATAN DAN PRODUKTIVITAS: Keselamatan pelabuhan, manajemen risiko, pemeliharaan infrastruktur maritim, produktivitas operasional, strategi mitigasi. Khair, Andi; Sade, Juswan
Riset Sains dan Teknologi Kelautan Volume 8, Nomor 2, Tahun 2025
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan merumuskan strategi manajemen risiko dalam pemeliharaan infrastruktur maritim guna meningkatkan keselamatan dan produktivitas operasional pelabuhan. Evaluasi difokuskan pada peran komponen infrastruktur, mencakup fasilitas, teknologi, dan prosedur operasional, terhadap efektivitas pengelolaan risiko. Pemeliharaan serta perbaikan infrastruktur maritim memiliki peran penting dalam menjamin kelancaran aktivitas pelabuhan sekaligus menjaga standar keselamatan. Namun, proses ini kerap menghadapi tantangan, seperti keterlambatan pekerjaan, kerusakan peralatan, serta faktor lingkungan yang berpotensi menurunkan produktivitas. Penelitian ini menerapkan pendekatan manajemen risiko melalui identifikasi potensi bahaya, analisis tingkat kemungkinan dan dampak, serta perumusan strategi mitigasi berdasarkan standar keselamatan maritim. Hasil penelitian menunjukkan bahwa penerapan manajemen risiko yang terstruktur mampu mengurangi potensi kecelakaan kerja, menekan biaya tak terduga, serta meningkatkan keandalan infrastruktur dan efisiensi operasional pelabuhan. Strategi ini menunjukkan efektivitas dalam menyeimbangkan keselamatan dengan produktivitas melalui optimalisasi pengelolaan pemeliharaan infrastruktur. Dengan demikian, penelitian ini menegaskan bahwa manajemen risiko bukan hanya instrumen penting dalam pemeliharaan infrastruktur maritim, melainkan juga pendekatan strategis untuk memastikan keberlanjutan produktivitas pelabuhan. Temuan ini memberikan kontribusi bagi pengembangan kebijakan pemeliharaan yang adaptif, berorientasi pada keselamatan, serta responsif terhadap dinamika lingkungan operasional maritim.
Co-Authors Assidiq, Fuad Mahfud Daniel M. Rosyid Khair, Andi Palippui, Habibi Paroka, Paroka Silvianita Syaifullah, Muh.