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All Journal Jurnal Teknologi dan Riset Terapan (JATRA) International Journal of Marine Engineering Innovation and Research Journal of Marine-Earth Science and Technology Jurnal Riset & Teknologi Terapan Kemaritiman Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Syam, Muh Yusril
Unknown Affiliation
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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EVALUATION OF THE VIABILITY OF TARIFFS BASED ON TRANSPORTATION EXPENSES FOR CATAMARAN RIVER SERVICES ON THE PARANGLOE - LAKKANG ROUTE Syamsuddin, Muh. Yusril Syam; Nigrum, Ainun Chandra Puspa
Journal of Marine-Earth Science and Technology Vol. 6 No. 1 (2025): April
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

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Abstract

Establishing ship fares necessitates a thorough examination because it encompasses multiple cost factors, with fuel being the primary expense. For operators, it is crucial to determine fares that not only account for operational expenses but are also competitive and accessible for users of the service. This research investigates the viability of river transport fares using catamaran vessels on the Parangloe–Lakkang route, which can accommodate 12 passengers and 10 motorcycles, with a maximum of 8 vessels in operation. The aim of this research is to assess the minimum fare needed for the vessels to function sustainably by employing the Required Freight Rate (RFR) method, alongside evaluating passengers' ability and willingness to pay through the Ability to Pay (ATP) and Willingness to Pay (WTP) methodologies. The analysis reveals that the lowest minimum fare for passengers is Rp1.910/trip for vessel 3, while vessel 8 has the highest minimum fare at Rp2.442/trip. The ATP for passengers has been noted at Rp2.893/trip, whereas the WTP is recorded at Rp2.000/trip. These findings imply that the RFR fare falls between the WTP and ATP figures, indicating it is within a suitable range for fare policy. This result is significant as it provides a foundation for establishing sustainable fares and promotes enhancements in the quality of river transport services to ensure they are safer and more enjoyable for passengers.
Pengaruh Jenis Elektroda RD dan LB E6010 Terhadap Laju Korosi Sambungan Las SMAW Pada Baja Ringan Dalam Media Air Laut Syam, Muh Yusril; Ainun Chandra Puspa Nigrum
Jurnal Teknologi Dan Riset Terapan (JATRA) Vol. 7 No. 2 (2025): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v7i2.10981

Abstract

Mild steel is widely used in construction because it is lightweight and economical, but it is susceptible to corrosion, especially in marine environments with high chloride ion content. Shielded Metal Arc Welding (SMAW) welded joints are vulnerable due to microstructural changes and weld defects that accelerate damage. This study aims to analyse the effect of RD and LB E6010 electrodes on the corrosion rate of mild steel welded joints in seawater. The research method involved welding 1.5 mm galvanised steel using 70–90 amps of current with the stringer bead technique. The samples were then immersed for 21 days in seawater from Pagatan Beach, South Kalimantan, and tested using the weight loss method. The test results showed that the RD electrode had a corrosion rate of 0.83 mm/year, which was lower than that of the LB electrode at 1.11 mm/year. This difference was influenced by weld defects, where the LB electrode produced more porosity, slag inclusion, and pitting corrosion. Based on the ASTM G46 classification, both values fall into the moderate category. It can be concluded that the use of RD electrodes is highly recommended for light steel joining applications in marine environments, given their superior corrosion resistance.
Technical and Operational Analysis of Marine Airbag-Assisted Ship Docking Puspa Ningrum, Ainun Chandra; Yusril Syam, Muh; Maulidah, Hikmah; Wahidah, Jusma; Jeremy Verian Sitorus, Chris
Indonesian Journal of Maritime Technology Vol. 3 No. 2 (2025): Volume 3 Issue 2, December 2025
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

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Abstract

Ship docking operations require careful planning and precise implementation to ensure safety and operational efficiency. One widely applied method in shipyard practice is the use of marine airbags to support vessels during docking and undocking processes. This study analyzes the application of a marine airbag-assisted docking system for the barge BG. Liana at PT. Jhonlin Marine Trans using an analytical and field-based approach. The analysis focuses on determining the required number of airbags, evaluating load distribution, and identifying factors contributing to airbag failure during docking operations. Vessel principal dimensions and marine airbag specifications were used as primary input parameters, while field observations were conducted to assess actual operational conditions. The results indicate that a minimum of 21 marine airbags is required to ensure adequate load sharing and structural safety; however, only seven airbags were deployed in practice, leading to excessive load concentration and increased risk of airbag failure. The failure analysis demonstrates that the observed damage was predominantly caused by controllable operational factors, including inadequate airbag quantity, improper placement, pressure inconsistencies, and runway conditions. These findings highlight the importance of strict compliance with analytical planning and operational procedures to enhance safety and reliability in marine airbag-assisted docking operations.
Strategi Peningkatan Produktivitas Muat Semen Curah di Pelabuhan Biringkassi Syam, Muh Yusril; Arsyad, Muhammad; Puspa Ningrum, Ainun Chandra
Jurnal Riset & Teknologi Terapan Kemaritiman Vol. 4 No. 1 (2025)
Publisher : Departemen Teknik Sistem Perkapalan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jrt2k.062025.02

Abstract

Persaingan industri semen yang semakin ketat menuntut sistem distribusi semen curah yang efisien dan andal, khususnya melalui moda transportasi laut. Pelabuhan Biringkassi sebagai pelabuhan asal distribusi semen curah PT. Semen Tonasa masih menghadapi permasalahan rendahnya produktivitas muat yang berdampak pada tidak tercapainya target distribusi di beberapa packing plant. Penelitian ini bertujuan untuk menganalisis tingkat produktivitas muat semen curah, mengidentifikasi faktor penyebab rendahnya produktivitas muat, serta merumuskan strategi peningkatan produktivitas muat. Metode penelitian menggunakan pendekatan deskriptif dengan kombinasi analisis kuantitatif dan kualitatif. Produktivitas muat dianalisis dalam satuan ton/jam, faktor penyebab dianalisis menggunakan diagram fishbone, dan perumusan strategi dilakukan dengan analisis SWOT. Hasil penelitian menunjukkan bahwa produktivitas muat semen curah yang diteliti masih berada di bawah standar operasional yaitu 230,27 ton/jam dari 450 ton/jam, dengan faktor dominan penyebabnya berasal dari keterbatasan dan keandalan peralatan ship loader. Strategi prioritas yang dihasilkan adalah strategi Strength–Threat (S–T), yang menekankan optimalisasi fasilitas, peningkatan keandalan peralatan, dan penguatan jaringan distribusi. Hasil penelitian ini berimplikasi pada perbaikan kinerja operasional pelabuhan dan armada kapal dalam mendukung distribusi semen curah yang lebih efisien dan berkelanjutan.
EVALUATION OF THE VIABILITY OF TARIFFS BASED ON TRANSPORTATION EXPENSES FOR CATAMARAN RIVER SERVICES ON THE PARANGLOE - LAKKANG ROUTE Muh Yusril Syam; Ainun Chandra Puspa Nigrum
Journal of Marine-Earth Science and Technology Vol. 6 No. 1 (2025): April
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v6i1.8782

Abstract

Establishing ship fares necessitates a thorough examination because it encompasses multiple cost factors, with fuel being the primary expense. For operators, it is crucial to determine fares that not only account for operational expenses but are also competitive and accessible for users of the service. This research investigates the viability of river transport fares using catamaran vessels on the Parangloe–Lakkang route, which can accommodate 12 passengers and 10 motorcycles, with a maximum of 8 vessels in operation. The aim of this research is to assess the minimum fare needed for the vessels to function sustainably by employing the Required Freight Rate (RFR) method, alongside evaluating passengers' ability and willingness to pay through the Ability to Pay (ATP) and Willingness to Pay (WTP) methodologies. The analysis reveals that the lowest minimum fare for passengers is Rp1.910/trip for vessel 3, while vessel 8 has the highest minimum fare at Rp2.442/trip. The ATP for passengers has been noted at Rp2.893/trip, whereas the WTP is recorded at Rp2.000/trip. These findings imply that the RFR fare falls between the WTP and ATP figures, indicating it is within a suitable range for fare policy. This result is significant as it provides a foundation for establishing sustainable fares and promotes enhancements in the quality of river transport services to ensure they are safer and more enjoyable for passengers.
Design Optimization of a Modern Catamaran Using Dynamic Stability Criteria for Improved Safety in Jeneberang River Transport Muh Yusril Syam
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i2

Abstract

River transportation in Sungai Jeneberang plays a vital role in supporting daily mobility between Kabupaten Gowa and Kota Makassar. However, the existing traditional vessels (katinting) exhibit low safety standards due to poor stability and the absence of adequate safety equipment. This study aims to optimize the design of a modern catamaran based on dynamic stability criteria to improve river transport safety. The research applies a Parent Design Approach combined with geometric modeling using AutoCAD and stability analysis using Maxsurf. The design process is based on field data and evaluated under three loading conditions: lightship, half load, and full load. The resulting principal dimensions are LOA = 12,00 m, B = 5,00 m, T = 0,55 m, with ratios L/B = 2,4, B/T = 9,09, and H/T = 2,91, indicating favorable stability characteristics. The results show that all loading conditions meet the IMO Intact Stability Code (IS Code) requirements, with positive metacentric height (GM) and stable righting arm (GZ) curves. The final 3D design accommodates 20 passengers, 15 motorcycles, and safety equipment, ensuring improved operational safety and comfort. This study contributes to the development of small-scale river transport design by integrating empirical data with stability-based optimization, offering a practical and safer alternative for sustainable river transportation systems.
Co-Authors Ainun Chandra Puspa Nigrum Ainun Chandra Puspa Nigrum Chris Jeremy Verian Sitorus Maulidah, Hikmah Muhammad Arsyad Nigrum, Ainun Chandra Puspa Puspa Ningrum, Ainun Chandra Wahidah, Jusma