Analisis Tahanan Kapal Berlambung Planning Hull Deadrise Angle 15 Derajat Pada Stepped 2U Menggunakan Metode Numerik

Mon, 01 Jul 2024 22:31:32 +0000

One way to modify a hull is by installing a stepped hull. The modification is conducted to achieve a ship design that ensures performance. The basic principle of using a stepped 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 stepped design, it is known that the total resistance of the ship tends to decrease with the addition of stepped 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 stepped to the ship model can reduce resistance

Studi Eksperimental Pertambahan Berat Las Blok 7 Lambung Kapal Ferry Ro-Ro 1500 GT

Mon, 01 Jul 2024 22:40:59 +0000

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.

Jurnal Riset Teknologi Perkapalan

Analisis Tahanan Kapal Berlambung Planning Hull Deadrise Angle 15 Derajat Pada Stepped 2U Menggunakan Metode Numerik

Studi Eksperimental Pertambahan Berat Las Blok 7 Lambung Kapal Ferry Ro-Ro 1500 GT