Analysis the Effect of Skeg Size Differences on A 6600 DWT Bulk Carrier for Ship Resistance using Maxsurf Software

Fahlevi, Muhammad Irgi (2024) Analysis the Effect of Skeg Size Differences on A 6600 DWT Bulk Carrier for Ship Resistance using Maxsurf Software. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Skeg merupakan suatu komponen struktur yang terletak pada bagian bawah buritan (belakang) kapal, tepatnya di depan atau di sekitar area kemudi dan baling-baling. Penggunaan skeg ini sangat mempengaruhi kinerja gerak kapal terutama nilai hambatan kapal. Pada penelitian ini digunakan kapal curah pengangkut kapasitas DWT 6600 ton, dan akan digunakan model skeg tipe single screw. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penggunaan skeg terhadap buritan kapal curah kemudian menganalisis pengaruh hambatan terhadap perbedaan volume akibat perubahan dimensi skeg yang digunakan. Analisis yang dilakukan pada penelitian ini berfokus pada hambatan total setiap model kapal yang menggunakan skeg sebelum dan sesudah modifikasi. Simulasi hambatan kapal dilakukan pada program hambatan Maxsurf, dengan menggunakan metode analisis Hotrop Mennen. Dampaknya adalah menurunnya nilai hambatan kapal akibat bentuk skeg kapal yang lebih ramping yang telah dimodifikasi dari bentuk skeg aslinya. Analisis dilakukan pada kecepatan kapal minimum dan maksimum pada kisaran 8-11,5 knot. Pada hasil akhir diperoleh penurunan resistansi sebesar 2 kN akibat modifikasi dimensi skeg. Sehingga hal ini mempengaruhi efisiensi pemilihan mesin. Nilai resistansi kemudian divalidasi dengan metode perhitungan analitik dengan menggunakan rumus resistansi total Metode Holtrop.
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Skeg is a structural component located at the bottom of the stern (rear) of a ship, precisely in front of or around the rudder and propeller area. The use of this skeg greatly influences the ship's motion performance, especially the ship's resistance value. In this research, a bulk carrier ship with a DWT capacity of 6600 tons is used, and a single screw type skeg model will be used. The aim of this research is to determine the effect of using a skeg on the stern of a bulk carrier ship and then analyze the effect of its resistance on volume differences due to changes in the dimensions of the skeg used. The analysis carried out in this research focuses on the total resistance of each ship model that uses skegs before and after modification. The ship resistance simulation was carried out in the Maxsurf resistance program, using the Hotrop Mennen analysis method. The result is a decrease in the ship's resistance value due to the slimmer shape of the ship's skeg, which has been modified from the original skeg shape. The analysis was carried out at the minimum and maximum ship speeds in the range of 8-11.5 knots. In the final results, a decrease in resistance of 2 kN was obtained as a result of modifying the skeg dimensions. So this affects the efficiency of machine selection. The resistance value was then validated using an analytical method of calculation using the Holtrop Method total resistance formula.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Keyword : Skeg, Bulk Carrier, Resistance, Maxsurf, Holtrop
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Irgi Fahlevi
Date Deposited:	08 Aug 2024 01:19
Last Modified:	08 Aug 2024 01:19
URI:	http://repository.its.ac.id/id/eprint/112971

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