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MARUNDA AIR QUALITY INDEX BASED ON CONTENT OF PM 2.5 AND PM 10 ACCORDING TO THE CRITERIA DETERMINED BY ENVIRONMENTAL PROTECTION AGENCY OF UNITED STATE OF AMERICA Yudhiyono Yudhiyono; Jaya Alamsyah; Mohamad Nurdin
Meteor STIP Marunda Vol 16 No 1 (2023): Juni
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) STIP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36101/msm.v16i1.269

Marunda is an area located in North Jakarta, several Industrial and warehousing located in this area, as well as special port such as: Millitary port, coal and sand loading and unloading. As a Industrial and warehousing area, tranportation marunda dominated by Container Truck and heavy Equipment. Main source of energy for industrial area came from coal and petroleum, and main source of energy for transportation activity came from petroleum, this is the main cause of air pollution in Marunda. Indication of high levels of air pollution can be seen by amount of dust (fine particles) that scattered on the floor. Based on existing studies has been known that air pollution has negative impact for human health. In this articles will be discussed level of air pollution in marunda based on the content of particulate matter 2.5, particulate matter 10 and Nitrogen Dioxide in the air.

CALCULATE THE ESTIMATED TANKER BERTHING TIME BASED ON THE AMOUNT OF ETHYLENE LOADED Yudhiyono, Yudhiyono; M. Yusuf, M. Yusuf; sugiyanto, sugiyanto
Meteor STIP Marunda Vol 16 No 2 (2023): Desember
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) STIP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36101/msm.v16i2.334

One of the problems that coauses dweling time remain high is the uncertainty of loading and unloading time also the time for documents processing. Impact this uncertainty is an additional cost being charged to ships by the authorities because of additional berthing time. Based on the berthing time report it is necessary to calculate the ideal time for processing document. Ship Document Processing include the clearence in document, processing document when the ship enter the port. Clearence out is processing document before the ship leave the port. Loading/Unloading proess includes of loading/unloading preparation. Loading/unloading preparation activities for Ethylene must be carried out by following appropriate procedures, this is because ethylene is volatile and flammable hazardous material. In fact Activities involving dangerous goods are regulated separately ini International Maritime Organisation Regulations.

THE POTENTIAL USE OF MINI WIND TURBINES AT SEKOLAH TINGGI ILMU PELAYARAN AS AN ALTERNATIVE RENEWABLE ELECTRICAL ENERGY SOURCE Yudhiyono, Yudhiyono; MUDAKIR, MUDAKIR; ARIYANTO, ARIYANTO
Meteor STIP Marunda Vol 16 No 2 (2023): Desember
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) STIP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36101/msm.v16i2.336

The need for electrical energy from year to year is getting bigger along with the increasing growth of population and industry, especially in big cities in Indonesia. The need for electrical energy in Indonesia still depends on Electrical Energy provided by the Perusahaan Listrik Negara (PLN). the main source of PLN's electrical energy is Fuel oil and Coal (50.01%). Sekolah Tinggi Ilmu Pelayaran as an educational institution seeks to support the government to reduce dependence on electrical energy produced with fossil fuels by seeking the potential of electrical energy sourced from renewable energy sources. One of the energies that has the potential as alternative energy is wind energy, where kinetic energy from the wind is utilized into electrical energy using wind turbines. For this reason, it is necessary to calculate the potential of wind energy as a renewable alternative energy at Sekolah Tinggi Ilmu Pelayaran

The Effectiveness of Project-Based Learning Compared to Conventional Methods in Teaching Applied Mathematics for Ship Stability and Center of Mass Calculation Yudhiyono, Yudhiyono; Y. A Nalle, Carles
Journal La Edusci Vol. 6 No. 4 (2025): Journal La Edusci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallaedusci.v6i4.2628

Mathematics constitutes a vital foundation in maritime education, serving as an essential tool for ensuring safety, operational efficiency, and sustainability in the shipping industry. Its applications extend to critical areas such as route optimization, cost reduction, and environmental protection. Nevertheless, applied mathematics is often perceived as one of the most challenging subjects for nautical students, largely because of the difficulty in linking abstract concepts to practical, real-world maritime problems. This learning gap highlights the need for pedagogical strategies that can transform theoretical knowledge into tangible applications relevant to the maritime field. Project-Based Learning (PBL) has emerged as an effective instructional approach to address these challenges by promoting active learning, enhancing problem-solving abilities, and fostering both creativity and critical thinking. In maritime education, PBL can be particularly impactful in teaching complex topics such as ship stability, where mathematical principles play a central role. Ship stability, especially in relation to intact conditions, is crucial in vessel design and operation, as it determines a ship’s capacity to resist external forces and recover equilibrium. A key mathematical component of this process is the calculation of a vessel’s center of mass, which integrates mass distribution across structural components and loading conditions. By constructing ship models and applying coordinate-based methods, students can connect theoretical mathematics with practical stability analysis. This experiential approach not only deepens conceptual understanding but also equips future maritime professionals with the analytical competencies essential for safe and efficient operations in the global shipping environment.

Calculate The Estimated Loading Time of Caustic Soda According on The Amount of Caustic Soda Loaded on MT AKRA 102 Guntoro, Herlan; Yudhiyono; Parulian, Daniel
Meteor STIP Marunda Vol. 16 No. 2 (2023): Vol 16 No 1 (2023): December
Publisher : Meteor STIP Marunda

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Loading operations on chemical tankers require precise time estimation to ensure port efficiency and operational safety. This study aims to formulate and validate a mathematical model for calculating the Estimated Loading Time (ELT) of Caustic Soda (NaOH 50% solution) on MT AKRA 102, a chemical/oil product tanker with a Deadweight Tonnage (DWT) of 5,692 metric tons. The research employs a descriptive quantitative approach incorporating cargo density conversion (ρ ≈ 1.515 t/m³), shore pumping transfer rates, and standardized operational safety margins—comprising initial slow-rate loading, topping-off sequences, and inspection allowances. Three loading scenarios with pumping rates of 150, 250, and 350 MT/hour were simulated for a cargo quantity of 4,500 MT, yielding total estimated loading times of 33.00, 21.00, and 15.86 hours, respectively. Validation against actual field data demonstrated that the model achieves discrepancies within acceptable operational thresholds, confirming its reliability for pre-voyage loading time planning. The findings contribute practical tools for port clearance scheduling and chemical tanker operational efficiency.

Calculate the Estimated Tanker Berthing Time Based on the Amount of Ethylene Loaded Yudhiyono, Yudhiyono; M. Yusuf, M. Yusuf; sugiyanto, sugiyanto
Meteor STIP Marunda Vol. 16 No. 2 (2023): Vol 16 No 1 (2023): December
Publisher : Meteor STIP Marunda

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Ethylene is a cryogenic liquefied gas cargo transported at approximately −104°C, requiring specialized handling procedures that significantly influence tanker berthing duration at loading terminals. Accurate estimation of berthing time is essential for terminal scheduling, berth utilization optimization, and operational cost management. This study aims to calculate the estimated tanker berthing time based on the amount of ethylene loaded by developing a predictive regression model. Data were collected from 20 ethylene carrier calls at a petrochemical terminal over a two-year period (2022–2023), comprising records of cargo volume (Metric Tons), loading rate (MT/hour), cool-down time, and total berthing time extracted from Statement of Facts (SoF) documents. A multiple linear regression analysis was performed with berthing time (Y) as the dependent variable and cargo volume (X₁) and loading rate (X₂) as independent variables. The results show that cargo volume and loading rate jointly explain 94.7% of the variance in berthing time (R² = 0.947, Adjusted R² = 0.941). The regression model Y = 5.832 + 0.00384X₁ − 0.0267X₂ indicates that each additional Metric Ton of ethylene increases berthing time by approximately 0.23 minutes, while higher loading rates reduce berthing time. The F-test confirms model significance (F = 152.34, p < 0.001), and both independent variables are individually significant (p < 0.05). The model provides a practical tool for terminal planners and ship agents to estimate berthing duration and improve berth allocation efficiency.

THE POTENTIAL USE OF MINI WIND TURBINES AT SEKOLAH TINGGI ILMU PELAYARAN AS AN ALTERNATIVE RENEWABLE ELECTRICAL ENERGY SOURCE Yudhiyono, Yudhiyono; MUDAKIR, MUDAKIR; ARIYANTO, ARIYANTO
Meteor STIP Marunda Vol. 16 No. 2 (2023): Vol 16 No 1 (2023): December
Publisher : Meteor STIP Marunda

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This study investigates the potential deployment of mini wind turbines at Sekolah Tinggi Ilmu Pelayaran (STIP) Jakarta as an alternative renewable electrical energy source. Situated along the northern coastal zone of Marunda, Jakarta, the campus is geographically positioned in a corridor with consistent coastal wind exposure, presenting a viable opportunity for small-scale wind energy harvesting. The research adopts a qualitative descriptive approach through an exploratory case study design. Data were collected using in-depth interviews with campus leadership, engineering faculty, campus electricians, and cadets, complemented by structured field observations and secondary document analysis covering historical wind speed records from BMKG, campus electricity consumption data, and institutional master plans. Data trustworthiness was ensured through source triangulation and method triangulation. The findings were analyzed using the Miles, Huberman, and Saldana interactive model comprising data reduction, data display, and conclusion drawing/verification. The results indicate that STIP Jakarta possesses favorable site conditions including open rooftop areas and coastal wind corridors, adequate electrical grid infrastructure for on-grid or off-grid integration, and strong institutional policy alignment through its green campus commitment. However, technical challenges related to marine corrosion, structural load-bearing capacity, and personnel readiness for routine maintenance require targeted mitigation. The study concludes that mini wind turbines hold significant potential as both a supplementary renewable energy source and an educational laboratory facility for maritime cadets, provided that structured implementation planning and capacity-building measures are adopted.

MARUNDA AIR QUALITY INDEX BASED ON CONTENT OF PM 2.5 AND PM 10 ACCORDING TO THE CRITERIA DETERMINED BY ENVIRONMENTAL PROTECTION AGENCY OF UNITED STATE OF AMERICA Yudhiyono Yudhiyono; Jaya Alamsyah; Mohamad Nurdin
Meteor STIP Marunda Vol. 16 No. 1 (2023): Vol 16 No 1 (2023): June
Publisher : Meteor STIP Marunda

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

Marunda is an area located in North Jakarta, several Industrial and warehousing located in this area, as well as special port such as: Millitary port, coal and sand loading and unloading. As a Industrial and warehousing area, tranportation marunda dominated by Container Truck and heavy Equipment. Main source of energy for industrial area came from coal and petroleum, and main source of energy for transportation activity came from petroleum, this is the main cause of air pollution in Marunda. Indication of high levels of air pollution can be seen by amount of dust (fine particles) that scattered on the floor. Based on existing studies has been known that air pollution has negative impact for human health. In this articles will be discussed level of air pollution in marunda based on the content of particulate matter 2.5, particulate matter 10 and Nitrogen Dioxide in the air.

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