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WAVE: Jurnal Ilmiah Teknologi Maritim
Published by Badan Riset dan Inovasi Nasional
ISSN : 1978886X     EISSN : 2614641X     DOI : https://doi.org/10.55981/wave
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Engineering Mechanical Engineering Transportation
WAVE: Jurnal Ilmiah Teknologi Maritim (Journal of Maritime Technology) (e-ISSN: 2614-641X, p-ISSN: 1978-886X) is journal for publication result in science, assessment and application of technology from Engineer, Scienties, Researcher, Lecturer and Scholar in Maritime Technology (Naval Architecture, Offshore Engineering and Coastal Engineering). WAVE is an accredited Sinta 4 which is publised twice a year in June dan December. WAVE accept journal manuscript is result from research (not journal review) and is never publish anywhere. Journal manusript have focus and scope in Maritime Technology (Naval Architecture, Offshore Engineering and Coastal Engineering) which cover: Shipbuilding and Floating Structure Design Technology Hydrodynamic Technology of Offshore Structures Marine Engineering and Underwater Acoustic Technology Planning & Management of Ports and Coastal Areas Port Infrastructures and Coastal Structures Technology Coastal Processes Ocean Wave Mechanics, Extreme Waves/Tsunamis, and Other Water Related Disasters Coastal Hydroinformatics Marine Renewable Energy Conversion Technology Marine Numerical and Safety Analysis WAVE is index in: DOAJ, GARUDA, SINTA, GoogleScholar, Dimensions, OpenAire, ScienceGate, Scilit, ROAD, WorldCat and Crossref.
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 172 Documents
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Construction Strength Analysis of a 250-Tonne Capacity Deck Crane Barge with Longitudinal Variation Kharis Abdullah; Sumardiono; M. Lukman Arif; Agung Prasetya Utomo; Denny Oktavina Radianto
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 17 No. 2 (2023)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2023.2817

Abstract

A deck crane barge is a barge with a crane system attached to the deck for loading, unloading, and lifting various materials or supporting equipment. In marine building construction, strength assessment must be carried out to ensure that the built design will not fail. The finite element method is one method to perform strength assessment of ship construction faster and simplify calculating. This study assessed the strength of crane barge decks with three variations of longitudinal size with reduced longitudinal size on the web and face plate with the element method. From the calculation results, Model A or the existing construction, has the smallest Von Mises Stress, while Model C, with reduced web and face plate size to L 80 x 80 x 8 mm, has the largest Von Mises Stress. The reduction in the size of the faceplate and web plate in the longitudinal section reduced the strength of the ship construction with higher stress values. However, all three tested Models had Von Mises Stresses below the maximum permissible stress required by BKI.
The Effect of Bow Flare Angle Variation on Speed Boat Resistance Sayyid Muhammad Al Ghofur; Arasy Fahruddin
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 1 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.5004

Abstract

The ship design industry today needs innovation, especially in terms of speed boat design, to improve efficiency and stability. The study aims to analyze the influence of the variation of the bow flare angle on the obstacles on the speed boat. Through numerical simulations using Maxsurf Resistance software and Savitsky Pre-Planing, Savitsky Planing, and Holtrop calculation methods, the study analyzed variations in bow flare angles of 25º, 30º, and 35º at speeds of 17, 19, and 21 knots. The simulation results showed that the 35º bow flare angle gives the lowest impediment of 34 kN and requires a power of 367,163 kW at a speed of 21 knots, making it a more efficient choice compared to the 25º and 30º angles which yield the highest impedance of 34.2 kN and requires 369,739 kW power. This analysis confirms that a larger bow flare angle can reduce barriers and improve energy efficiency, which is important for the design and operation of speed boats. These results show that choosing the right bow flare angle can improve ship speed efficiency by reducing obstacles and fuel consumption. The results of this research are expected to be beneficial to the designers and operators of speed boats in achieving optimal performance.
Design and Construction Analysis of a River Cruise Boat using an Electric Motor Drive Aditya Djunaidi; Erifive Pranatal
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 1 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.6234

Abstract

Surabaya has many large rivers, so it has tourism potential if the management can utilize the river. Surabaya needs a ship that can accommodate river cruising activities to maximize the river's potential. Fiber-based boats are suitable for these activities because fiber materials tend to be durable, lightweight, and easily made. Therefore the boat was designed using fiberglass, which had the primary size; 10 meters long, 2.3 meters wide, 1.2 meters high, and 0.5 meters draft. The primary size allowed the boat to carry 11 passengers, including one helmsman, in one trip. The boat used an electric outboard engine with four horsepower that could make the boat travel at a speed of 4 knots, so the ship required 20 minutes to make a trip. The overall cost to make the boat amounted to Rp. 47.345.600.
Fire and Rescue Boat Design in Tanjung Perak Waters Aldrin Ferdiansyah; Erivife Pranatal
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 1 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.6236

Abstract

Tanjung Perak is the name of a port located on Jalan Jamrud Utara, Perak Utara, Pabean Cantian District, Surabaya, East Java, 60165. Geographically, Tanjung Perak port is located between 112°-30’-13’’ East Longitude and 07°-70’-30’’ South Latitude, precisely in the Madura Strait, North of Surabaya. The number of ships passing through Tanjung Perak waters is very large so the number of ships passing increases the potential for accidents. It is conducted to minimize ship accidents that cause fatalities or losses. Shipbuilding in the maritime world involves stages ranging from determining ship geometry, conducting resistance and stability analysis, and designing effective propulsion systems. In addition, ship design must also consider variables such as line plan which focuses on the physical aspects and hydrodynamic performance of the ship, while general arrangement focuses on the internal organization and function of the ship. Other safety support facilities are Life Buoy, Life Jacket and complete firefighter safety clothing. The researcher obtained the main dimensions with a ship length of 7.5 meters, width of 2 meters, height of 1.6 meters, draft of 0.5 meters, and speed of V 8 Knots. The ship is equipped with a water pump with a flow rate of 199 meters/minute or 3.316 meters/second. The ship has a specific speed of 157rpm which functions to extinguish fires when a fire occurs on the ship.
Effect of Electrode and Current Variation of Smaw Welding With V-ShapeOn the Bending Strength of ASTMA36 Ship Steel Plate Material Regi Septian Permadi; Erifive Pranatal
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 1 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.6269

Abstract

This study aims to analyze the effect of current and type of electrode on bending strength with V-shoulder and using SMAW (Shielded Metal Arc Welding) welding on ASTM A36 steel plate. The SMAW welding method was chosen because of its wide use in the industrial field, one of which is in the field of steel ship construction. The welding process is carried out with current variations of 90A, 100A and 130A and the types of electrodes used are AWS E6013 and AWS E7016. Bending tests were conducted using relevant ASME Section IX standards to evaluate the strength and ductility of the joints. After obtaining data from the test results of several samples from different electrodes with different currents, the average value is obtained, namely, the sample using the E7016 electrode with a current of 100A is 1771,63 MPa, the sample using the E6013 electrode with a current of 90A is 1485,21 MPa. From these results it can be concluded that there is a difference in bending strength between each specimen, which indicates that variability in test conditions, such as current variation and electrode variation, is an important role in influencing the final results in bending testing. Experimental studies are carried out by testing bending on specimens that have been welded with welding current and electrode.
Analisis dan Perancangan Sistem Informasi Pada Pelayaran Rakyat Secara Terintegrasi (Studi Kasus: Muatan Kapal Rakyat) Alwi Sina Khaqiqi; Siti Rahayuningsih; Muhammad Alhazman; Gusma Hamdana Putra
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 2 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.8053

Abstract

Manajemen transportasi pelayaran rakyat memiliki hubungan yang erat dengan manajemen sistem informasi kondisi muatan. Pelayaran rakyat yang saat ini masih menggunakan sistem informasi yang tradisional dikarenakan minimnya fasilitas yang menunjang kegiatan pengiriman barang. Ada pengguna yang meninggalkannya karena kurang praktis dan kepercayaan terhadap kondisi barangnya. Pihak pengguna hanya bisa menunggu kabar melalui tatap muka dan sambungan telepon, jadi tidak bisa mengetahui dengan pasti kondisi dan keberadaan barangnya. Dengan adanya kendala tersebut maka dibutuhkan fasilitas penunjang sebagai sumber pertukaran informasi yang baik. Dengan adanya kondisi tersebut para pemilik barang yang hendak mengirimkan barang harus melebihkan barangnya, agar jika terjadi kerusakan ataupun kehilangan muatan barang dapat diterima oleh penerima sesuai dengan jumlahnya. Kemampuan untuk tracking dan tracing sangat penting bagi upaya mengetahui kondisi barang saat dilakukan pengiriman. Maka dari itu dibuatkan sebuah sistem informasi yang bisa digunakan sebagai alat untuk mengetahui kondisi muatan yang di kirim. Dengan menggunakan alat pelacak muatan berupa barcodes scaner dan website didapatkan nilai kelayakan menggunakn Benefit Cost Ratio (BCR) sebesar 1,22.
Energy and Operating Costs of Methanol Fuel on A 4000 DWT Oil Chemical Tanker Abyan Ariaputra Aziz; Fajri Ashfi Rayhan; Agus Dwy Bramastha; Muhammad Afrizal; Muhammad Sugeri; Amir Marasabessy
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 2 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.8274

Abstract

The International Maritime Organization (IMO) has introduced regulations that the shipping industry must reduce Greenhouse Gas Emissions by at least 50% by 2050 compared to 2008. At the same time, the IMO predicts that global shipping emissions will increase by 250% by 2050. Therefore, the Shipping Industry must fix this problem by reducing carbon emissions. Methanol Fuel is an alternative fuel for ships that is cost-effective, low-emission, environmentally friendly, and renewable. Methanol can reduce SOx emissions by up to 99%, NOx emissions by up to 60%, and Special Particulates by up to 95%. The purpose of this study is to make adjustments to the methanol-fueled main engine, calculate energy, operating costs,  main engine retrofit prices, and return periods on the  Oil Chemical Tanker 4000 DWT ship with the method of Round-Trip Shipping with Route Variations, Composition, and Fuel Prices. From the discussion of this study, it can be concluded that the calculation of energy and operating costs of Heavy Fuel Oil (HFO) and methanol is influenced by the amount of fuel used during the voyage, in addition to the results of the calculation of energy, operating costs, and retrofit prices on the Oil Chemical Tanker 4000 DWT (Deadweight Tonnage) ship with a voyage on the American route of 3,467,320 MJ, Rp. 1,565,684,341.-, and a 2.4-year return period, the European route of 3,137,099 MJ,  Rp. 1,352,844,897.-, and 2.8 years of return period, and Asia Pacific routes of 3,274,914 MJ, Rp. 1,069,629,506.-, and 3.5 years of return period, as well as the price of the main engine retrofit, which reached Rp. 7,574,435,035.-. These findings offer valuable insights for shipping companies to make informed decisions about fuel selection and retrofit investments, potentially leading to significant cost savings and a reduced environmental footprint. Furthermore, the study provides a strategic foundation for complying with IMO regulations and achieving long-term sustainability goals in the maritime industry.
A Modular Tide LevePrediction Using Combination Ofharmonic-Analysis and Nonlinear Autoregressive Exogenous (Narx) Methodology in Semarang Indonesia Elvien Hastatomo Khasby; Anistia Malinda Hidayat; Usman Efendi; Pulung Nurtantio Andono; Catur Supriyanto; Arief Soeleman; Ferry Oktarisa; Aurel Dwiyana
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 2 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.8608

Abstract

Semarang is highly prone to tidal floods year-round, making tidal prediction using methods like Harmonic Analysis with Least Squares (HA-LS) crucial for disaster mitigation. However, this method is not effective enough because it has relatively high Root Mean Squared Error (RMSE) value of up to 11.43 cm with coefficient of determination (R2) of around 0.727. The Nonlinear Autoregressive Exogenous (NARX) neural network model is then proposed to improve the accuracy of tide predictions. In general, the features used as input are divided into two types, namely atmospheric/weather data (temperature, pressure, direction, and wind speed) and estimated tide data from the HA-LS method. This research aims to analyze whether this type of neural network is suitable to be applied in Indonesia since the ocean and atmosphere condition might vary. Tidal observation data from the Tanjung Mas Maritime Meteorological Station is used as target data/actual data. Three scenarios are used by varying input types to find out which type of input produces the best performance of model prediction. Moreover, before feeding input data into the NARX neural network, all atmospheric data used as input are standardized using Z-score normalization, often called Min-Max scaling which can avoid the effect of outlier in the dataset. Based on these three scenarios, the use of combined atmospheric/weather data and tide estimates from HA-LS calculations as input to the NARX model produces the best predictive performance with the smallest RMSE value among all scenarios, approximately 5 cm, and the highest coefficient of determination (R2) at about 0.974. These results indicate that NARX model can predict tides with high accuracy in Semarang.
Analysis of Resistance and Flow Velocity on Barge Skeg VariationsUsing Computational Fluid Dynamics Method Chintya Intan Prastika; Priyambodo Nur Ardi Nugroho; Desi Tri Cahyaningati
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 18 No. 1 (2024)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2024.8899

Abstract

The maritime sector utilizes various technologies, including barges, which rely on tugboats for propulsion due to lacking their propulsion system. To enhance sailing efficiency, stern modifications through skeg additions can optimize performance, though these affect drag force and velocity. This study analyzed 12 skeg variations using Computational Fluid Dynamics (CFD) simulation via ANSYS Workbench software to determine optimal design configurations. At 4 knots, the analysis revealed variation 3 as the most efficient design, producing a drag force of 17,775.80 N and velocity-u of 2.07198 m/s. Similarly, at 8 knots, variation 3 maintained optimal performance with a drag force of 67,405.60 N and velocity-u of 4.1430 m/s. Results demonstrated that variation 3 consistently provided the most stable and optimal performance across low and high speeds. These findings provide valuable insights for future barge design considerations, offering a reliable reference for selecting optimal skeg configurations.
Studi Perbandingan Thrust dan Torque pada Toroidal Propeller dengan Wageningen B-Series Propeller Menggunakan Simulasi Computational Fluid Dynamics (CFD) Tegar Prastyo; Muhammad Sawal Baital; Aulia Windyandari; Zulfaidah Ariany
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 19 No. 1 (2025)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2025.9251

Abstract

Propeller berperan penting dalam sistem propulsi kapal, memengaruhi kecepatan dan efisiensi transportasi laut. Wageningen B-Series Propeller menjadi standar dalam analisis hidrodinamis, sementara Toroidal Propeller menawarkan keunggulan dalam torsi serta pengurangan noise dan getaran. Penelitian ini membandingkan karakteristik hidrodinamis dan performa propulsi kedua propeller menggunakan simulasi CFD dengan model turbulensi Transition k-kl-ω. Analisis mencakup Thrust, Torque, KT, dan KQ pada rentang 1500–3000 RPM. Hasilnya, Wageningen B-Series menghasilkan Thrust lebih tinggi, mencapai 2610 N pada 1500 RPM dan 3101 N pada 3000 RPM, dibandingkan Toroidal yang hanya 654 N dan 1591 N. Namun, Toroidal unggul dalam torsi, meningkat dari 67 Nm pada 1500 RPM menjadi 205 Nm pada 3000 RPM, sedangkan B-Series hanya 138,58 Nm. Kesimpulannya, Wageningen B-Series lebih unggul dalam Thrust, sementara Toroidal lebih baik dalam torsi dan potensi pengurangan kebisingan. Optimasi geometri Toroidal Propeller diperlukan untuk meningkatkan daya dorong dan efisiensinya agar lebih kompetitif di industri maritim.

Page 8 of 18 | Total Record : 172

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