https://cot.unhas.ac.id/journals/index.php/jrtp/issue/feedJurnal Riset Teknologi Perkapalan2024-07-01T23:00:05+00:00Mohammad Rizal Firmansyahjurnalrisetteknologiperkapalan@gmail.comOpen Journal Systems<p>Jurnal Riset Teknologi Perkapalan adalah jurnal ilmiah berseri yang terbit dua kali setahun pada bulan <strong>Juni</strong> dan <strong>Desember</strong> yang berisi artikel hasil penelitian maupun pemikiran konseptual dalam bidang teknologi perkapalan, sistem permesinan kapal dan bangunan apung lepas pantai</p> <p> </p>https://cot.unhas.ac.id/journals/index.php/jrtp/article/view/1747Analisis Tahanan Kapal Berlambung Planning Hull Deadrise Angle 15 Derajat Pada Stepped 2U Menggunakan Metode Numerik2024-07-01T22:59:42+00:00Rosmani Rosmanirosmanimun@gmail.comAndita Pasuluanditapasulu@gmail.comLukman Bocharylukman@unhas.ac.idSuandar Basoandar_baso@yahoo.co.idMuhammad Akbar Asisakbar.a@eng.unhas.ac.id<p>One way to modify a hull is by installing a <em>stepped</em> hull. The modification is conducted to achieve a ship design that ensures performance. The basic principle of using a <em>stepped</em> hull is to reduce the wetted surface area and decrease the ship's resistance, thereby improving its performance. The method used in this research is a numerical method for analyzing the ship's resistance. Based on the resistance analysis on the 15-degree deadrise angle hull with a 2U <em>stepped</em> design, it is known that the total resistance of the ship tends to decrease with the addition of <em>stepped</em> and an increase in the speed and trim of the ship. The ship model with 3-stepped 2U has a smaller resistance value than the model with 1-stepped 2U and 2-stepped 2U. Hence, the addition of <em>stepped</em> to the ship model can reduce resistance</p>2024-07-01T22:31:32+00:00##submission.copyrightStatement##https://cot.unhas.ac.id/journals/index.php/jrtp/article/view/1746Studi Eksperimental Pertambahan Berat Las Blok 7 Lambung Kapal Ferry Ro-Ro 1500 GT2024-07-01T22:59:42+00:00Jefry Adam Matemmujefriadam@gmail.comWahyuddin Mustafawahyuddinmustafa09@gmail.comSyamsul Asris.asri@unhas.ac.idFarianto Fachruddinfariantofachrudin@gmail.comMohammad Rizal Firmansyahmr.firmansyah@gmail.comMisliah Idrusmisliahidrus@yahoo.co.idFadhil Rizki Clausthaldifadhil.clausthaldi@unhas.ac.idDiva Anugrah RamadhaniDivaanugrah@gmail.comJerry Agung PatariJeryyagung@gmail.comLedya Vega AdiputrieLedyavega@gmail.com<p><em>Before World War II, steel ship construction used rivet construction. However, along with the development of technology, welding methods were created and are a technique for joining steel construction with results that are tighter, simpler and cost-effective for assembly. Welding is the process of joining materials by heating them to welding temperature, with or without standard pressure, and with or without the use of filler metal. The weight of the weld metal can affect the light weight tonnage (LWT) and weight or weight group of the ship and the cost of the ship. How much weld metal increases the weight of the steel structure in block 7 of the 1500 GT Ro-Ro Ferry Ship using the SMAW (Shielded Metal Arc Welding) welding process is the aim of this research. The approach was carried out experimentally, by making several specimens based on the welded construction design and welding specification procedures (WPS) for the 1500 GT Ro-Ro Ferry Ship. The increase in weld weight on an experimental basis was 2.13%, or in other words, from a total welding length of 2,395.56 meters, we obtained an increase in weld metal weight of 1,059.95 kg from the total weight of the block 7 hull structure of the 1500 GT Ro-Ro Ferry Ship of 48,595.0 kg.</em></p>2024-07-01T22:40:59+00:00##submission.copyrightStatement##