Optimisasi Desain Konfigurasi Double Hull Untuk Tanker Dengan Ukuran 90 M ≤ Length < 150 M

Pasaribu, Sheely Leony Artha (2024) Optimisasi Desain Konfigurasi Double Hull Untuk Tanker Dengan Ukuran 90 M ≤ Length < 150 M. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sejak tahun 1976, International Maritime Organization (IMO) mewajibkan tanker dengan ketentuan sesuai MARPOL 73/78 Annex I Chapter IV Part A Reg 19 memiliki lambung ganda (double hull). Tujuan utama dari penggunaan lambung ganda adalah melindungi lingkungan dari risiko tumpahan minyak saat terjadi kecelakaan. Namun, penerapan lambung ganda ini mengakibatkan penurunan kapasitas ruang muat akibat adanya inner hull. Oleh karena itu, diperlukan desain lambung ganda yang efisien dan efektif untuk meningkatkan kapasitas ruang muat. Dengan kemajuan teknologi yang pesat, optimisasi desain lambung ganda pada kapal yang sudah ada (existing ship) menjadi mungkin untuk dilakukan. Penelitian ini berfokus pada optimisasi lambung ganda pada tanker dengan ukuran 90 m ≤ length < 150 m. Kapal yang sudah ada akan dimodelkan menggunakan aplikasi Maxsurf dan hasil pemodelannya akan dianalisis hingga sesuai dengan data asli kapal. Setelah itu, lambung ganda kapal akan dioptimisasi pada setiap tetukan (knuckle) dari inner hull. Fungsi objektif dalam penelitian ini adalah volume ruang muat yang akan dioptimalkan dengan variabel lebar double hull dan posisi cargo landing point. Dalam memperoleh fungsi objektif maksimum, terdapat batasan yaitu ragulasi untuk minimun lebar double hull dan clearance pada cargo landing point oleh MARPOL 73/78, kondisi stabilitas oleh Intact Stability (IS) Code, freeboard, dan longitudinal strength. Proses optimisasi ini didukung oleh pemrograman menggunakan Visual Basic for Application (VBA). Setelah optimisasi dilakukan, bentuk lambung ganda yang baru akan dimodelkan kembali di Maxsurf dan dianalisis untuk menentukan pengaruhnya terhadap kepatuhan regulasi. Seluruh kondisi ini akan dievaluasi untuk memastikan kepatuhan terhadap regulasi yang berlaku. Dari hasil optimisasi, kapasitas ruang muat meningkat sebesar 79.544661 m³ (0.97%) dibandingkan dengan existing ship. Peningkatan volume ruang muat ini memungkinkan estimasi pengurangan panjang kapal sebesar 0.57 meter pada frame 85-86 dan mengurangi berat kapal sebesar 11.59309 ton. Didapatkan bahwa estimasi pengurangan biaya material baja Rp. 128.297.968. dapat diraih akibat reduksi panjang tersebut.
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Since 1976, the International Maritime Organization (IMO) has mandated that tankers comply with MARPOL 73/78 Annex I Chapter IV Part A Reg 19, requiring them to have double hulls. The primary purpose of double hulls is to protect the environment from the risk of oil spills in the event of an accident. However, the implementation of double hulls results in a reduction in cargo capacity due to the inner hull. Therefore, an efficient and effective double hull design is necessary to enhance cargo capacity. With rapid technological advancements, optimizing the double hull design for existing ships has become feasible. This study focuses on optimizing the double hull design for tankers with lengths between 90m and 150m. The existing ship will be remodeled using Maxsurf software, and the modeling results will be analyzed to ensure they align with the ship's original data. Subsequently, the double hull will be optimized at every knuckle line of the inner hull. The objective function in this study is the volume of the cargo space, with the variables being the width of the double hull and the position of the cargo landing point. To achieve the maximum objective function, there are constraints including the minimum width of the double hull and clearance at the cargo landing point as per MARPOL 73/78, stability conditions according to the Intact Stability (IS) Code, freeboard, and longitudinal strength. This optimization process is supported by programming using Visual Basic for Application (VBA). After optimization, the new double hull design will be remodeled in Maxsurf and analyzed to determine its impact on the ship's stability, freeboard, and longitudinal strength. All these conditions will be evaluated to ensure compliance with applicable regulations. From the optimization results, the cargo capacity increased by 79.544661 m³ (0.97%) compared to the existing ship. This increase in cargo volume allows for an estimated reduction in the ship's length by 0.7 meters at frames 121-122 and a reduction in the ship's weight by 11.59309 tons. During the shipbuilding process, reducing the weight of steel material by 11.59309 tons can save material costs by Rp 167,856,644.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Tanker, Double Hull, Knuckle, Optimisasi, Kapasitas Ruang Muat, Tanker, Double Hull, Knuckle, Optimization, Cargo Capacity
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM761 Stability of ships
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Sheely Leony Artha Pasaribu
Date Deposited:	12 Aug 2024 04:10
Last Modified:	12 Aug 2024 04:10
URI:	http://repository.its.ac.id/id/eprint/113429

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