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Analysis of Solar Panel Energy Consumption on Tourist Boats in Labuan Bajo Putra Pratama; Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 4 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i4.5086

Abstract

Renewable energy is alternative energy that is currently being developed. In the current development of transportation, renewable energy is something that must be utilized properly in creating environmentally friendly modes of transportation. The use of renewable energy in the shipping industry plays a very important role in the era of the fossil fuel crisis. Research on this ship uses solar panels to convert solar energy into electrical energy, this energy can be used for ship navigation purposes. The ship's propulsion system uses an electric engine. The electric engine uses a battery that can be recharged when the ship is docked at the port. The solar panels used by Thin Film Solar Cells are lighter and have a high efficiency value. Total energy use for navigation is 799.6 kW. This ship uses 182 Thin Film Solar Cells with a capacity of 100 WP. This ship uses 4 batteries, where 1 main battery is used to drive the electric motor. Meanwhile, for backup energy storage, navigation uses 3 batteries.
Lifespan Estimation of Galvanized Steel and Stainless Steel Pipe Mohammad Danil Arifin; Moch Ricky Dariansyah
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5119

Abstract

This research presents a comparative study focused on estimating the lifespan of galvanized steel pipes and stainless steel pipes within the context of a ballast system. Ballast systems play a crucial role in maintaining the stability and trim of vessels, making the longevity of the associated piping materials essential for maritime operations. This research aims to provide insights into the corrosion behavior and overall durability of galvanized steel and stainless steel pipes employed in ballast systems. The investigation involves an in-depth analysis of corrosion mechanisms specific to both galvanized steel and stainless steel pipes in the corrosive marine environment. The influence of factors such as salinity, and immersion time is examined. By understanding the distinct corrosion behavior of galvanized steel and stainless steel pipes, maritime industry stakeholders can make informed decisions regarding material selection, maintenance schedules, and potential retrofitting options. Ultimately, the insights gained from this study contribute to the sustainability and operational efficiency of maritime transport by enabling the optimization of ballast system infrastructure. As regulations and environmental considerations evolve, a comprehensive understanding of the lifespan estimation of galvanized steel and stainless steel pipes aids in mitigating potential failures, reducing downtime, and ensuring the safety and reliability of vessel operations. It is shown that the lifespan of stainless steel is longer than that of galvanized pipe.
Corrosion Rate Estimation of Passenger Ships Ballast System Pipes Moch Ricky Dariansyah; Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5120

Abstract

Corrosion on ships is a common challenge that arises due to the exposure of various metal components to the marine environment. It is a natural electrochemical process that deteriorates the integrity and performance of the ship's structures and equipment over time. The corrosive agents in the marine environment include seawater, humidity, salt spray, chemicals, and microbiological organisms. Corrosion can affect different parts of a ship, such as the hull, ballast tanks, pipelines, propellers, rudders, and various metallic fittings. It can lead to the weakening of structural components, reduced operational efficiency, increased maintenance costs, and even safety hazards. Therefore, it is essential to determine the limitations of the lifespan and efficiency of pipes concerning the influence of corrosion. In this study, the corrosion rate of Galvanized Steel Pipe SCH 40 and Stainless Steel 304 was estimated. The corrosion rate of pipes was evaluated by variating the influence of 3% and 6% salinity and immersion time 240, 360, and 720 hours. The result shows that the corrosion rate tends to increase in higher salinity and immersion time.
Numerical Study of Kaplan Propeller by Using CFD: Effect of Angle and Blade Diameter Variations Mohammad Danil Arifin; Frengki Mohamad Felayati; Muswar Muslim; Ayom Buwono; Yeddid Yonatan Eka Darma
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 2 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.5451

Abstract

Efficient propeller performance contributes to better overall ship performance and speed. A well-designed propeller can optimize thrust generation, leading to improved maneuverability, responsiveness, and acceleration. It enables ships to maintain higher speeds while using less power, enhancing their competitiveness in the maritime industry. In this study, the Kaplan series propeller was analyzed by using Computational Fluid Dynamics (CFD). By modifying the angle of attack on the Kaplan propeller with 3, 4, and 5 blades, the distribution of the surface pressure, generated thrust, and torque value were easily identified and analyzed. The result shows that the change in the angle of attack influenced the pressure distribution on the back and face side of the propeller. The angle of attack is increased, and the pressure surface distribution also tends to increase. It has also affected the efficiency of the propeller performance which is expressed by the values of thrust propeller and torque. The more efficient the propeller performance, the less power it requires to produce the desired thrust.
Photovoltaic-Based Electric Tourist Boat Design to Support Island Tourism at the Labuan Bajo Putra Pratama; Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 2 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.5464

Abstract

Indonesia as an archipelagic country certainly has a great opportunity to develop the potential of the marine tourism sector. Maritime tourism in Indonesia has become a prima donna for foreign and foreign tourists, especially in Labuan Bajo. Task Island - Kelor Island - Karangan Island - Makasar Island is a new marine tourism destination that is currently being visited by many tourists. The design of electric ships based on renewable energy is expected to be able to answer the limited access between islands and the increasingly expensive depletion of fossil energy at this time. To get the size of the ship to be used, the linear programming method is used from several electric ship comparators that have been widely used. By utilizing batteries as energy storage for the propulsion of ship engines and using Photovoltaics as an energy source to operate navigation systems such as radar, radio, lights, and sonar. This ship can carry as many as 20 passengers with a route as far as 9,131.80 m. The operational time from 07.00 to 17.00 can be operated by as many as 5 ships with each ship taking 2 trips. The electric ship design principal dimension LOA = 14,00 m, LWL = 13,00 m, B = 6,00 m, H = 1,3 m, Cb = 0,236, Vops = 10 Knot, Vmax = 12 Knot, Electric Motor = 75 kW, Displacement 15,720 Ton.
Hydrostatics Curve Approach as a Design Development of Fishing Canoe with Bilge Keel to Improve Rolling Period Bima Ramadhani; Yeddid Yonatan Eka Darma; I.G.N.A Satria Prasetya; Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 2 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.5469

Abstract

Canoes are currently starting to be in demand among the public, some of the activities that can be carried out using canoes include fishing, traveling or water sports. Canoes are still in great demand compared to other types of boats, because canoes are very stable in calm water. Its stability is the reason why this type of boat is usually chosen as the type of boat for beginners and family outings. Unfortunately the canoe is less stable in challenging waters. When the weather or waters are calm the canoe is reliable, however when it turns bad with very choppy water and high winds a skilled oarsman is needed to keep the boat afloat. The downside with canoes is having good primary stability but usually poor secondary stability. This means the boat is only stable in still water. If the wind blows hard and creates very choppy water, then the canoe or canoe will lose stability and rolling motion which can cause accidents for its users. Therefore I will try to use a flat bottom canoe design by adding a bilge keel to the hull of the canoe in hopes of adding stability. I tried to compare the stability and roll period of a regular canoe with one that used 1 pair of bilge keels, 6.25 cm wide, 0.8 cm thick and 30 degrees angled. Variations in the length of the bilge keel used include 0.875, 1.05 and 1.225 m. Mounted in the middle of the ship, not too forward or backwards.
Application of Internet of Things (IoT) and Big Data in the Maritime Industries: Ship Allocation Model Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 1 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i1.5533

Abstract

The Internet of Things (IoT) and Big Data (BD) are growing significantly. IoT is defined as a gateway of technology to digital transformation. To work effectively, BD, Artificial intelligence (AI), and blockchain all rely on those data. Once the physical framework information is changed into computerized digital data, an opportunity opens up to improve vessel operations. Research shows that much of the hidden information can help improve vessel operations by leveraging BD and IoT. Therefore, other sectors of the value chain players such as consignees, shipyards, shippers, manufacturers, and classification societies are also interested in maritime BD. In recent years, the world's ship logistics industry has undergone major changes due to the global shipping cargo movement. The availability of numerous BD is also growing exponentially. This will make it possible to utilize many BDs and IoT in the shipping industry. Successful utilization of these BDs and IoT will bring about major innovations in the shipping industry. In this study, we reviewed several applications of BD and IoT in the maritime domain and developed a ship allocation model using maritime BD and IoT-extracted data. As a result, ship allocation establishment is discussed, and the ship allocation result is evaluated.
Analysis of Thrust & Torque B-Series Propeller using CFD: Variation of Blade and nProp Mohammad Danil Arifin
International Journal of Marine Engineering Innovation and Research Vol. 7 No. 4 (2022)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i4.5551

Abstract

The propeller is an important part of determining the ship's maneuverability. The propeller itself is a tool to produce thrust that comes from engine power which is transmitted through the shaft. At their defined radial position, Propeller thrust (N) and torque (Nm) are formed from propeller blade foil sections at the local lift and drag. Particularly, the total propeller thrust will be integrated into an axial lift vector for the sections from root to tip. The selection of a good propulsion device will affect the force of the ship. One way to choose the propulsion of the ship is the selection the type of propeller and the provision of new propeller variations to produce maximum thrust. For that reason, this study aims to analyze of thrust and torque of B-series propellers using CFD by varying the number of blades: 3, 4, and 5 blades; and the propeller speed (nProp) i.e., 325, 525, and 725 rpm. The numerical analysis using computational fluid dynamics (CFD) was conducted to identify the thrust (N) and force (Nm) of the propeller. The CFD simulation consists of three main steps: pre-processor, solver manager, and post-processor. The results show that the thrust and torque significantly increased at the higher number of blades and nProp.
Occupational Health and Safety Analysis Using HIRA and AS/NZS 4360:2004 Standard at XYZ Shipyard Mohammad Danil Arifin; Fanny Octaviani
International Journal of Marine Engineering Innovation and Research Vol. 7 No. 3 (2022)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i3.5606

Abstract

A shipyard is defined as a place where ships are repaired and built. Where, various risks from the work process i.e., ship repair, hull cleaning, hull coating, etc., exist. Therefore, it is necessary to carry out risk analysis in the work process at XYZ Shipyard. This study uses a descriptive method with a qualitative approach through interviews and based on hazard identification and risk assessment (HIRA) using the AS/NZS 4360:2004 standard to calculate the risk value. Occupational health and safety assessments are carried out to evaluate risks that exist in the workplace intending to eliminate, reduce, and replace sources of risk with safer equipment or processes, or to reduce risks to the health and safety of workers. In this study, we are focused on the three working processes i.e., ship repairment process, hull cleaning, and coating. As a result, it can be concluded that all the risks which occurred in the work process at XYZ Shipyard i.e., ship repair, hull cleaning, and coating process were controlled.
Establishment of Ship Allocation Model by Using Marine Logistics Database (MLDB) Mohammad Danil Arifin; Fanny Octaviani
International Journal of Marine Engineering Innovation and Research Vol. 7 No. 2 (2022)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i2.5617

Abstract

Recently, marine big data are significantly increased. If the data are effectively analyzed, it can give an advantage, and we can harness the data that is useful for a decision-maker in maritime industries. The Marine Logistics Database (MLDB) was successfully developed in the previous studies. It was developed by integrating big data into a relational database. By utilizing the extracted data from the developed database (DB), the model of ship allocation will be established. In this study, the main purpose is to develop a ship allocation model that matches the results with the existing ship allocation. In this study, the effectiveness of the allocation model was examined by checking the port constraints, ship specification, and allocation process itself. Moreover, some simulations were executed and discussed to develop new ship allocation and analyze the effective ship specification.