Optimisasi Desain Konfigurasi Double Hull untuk Small Tanker

Cahyanti, Risma Siswi (2024) Optimisasi Desain Konfigurasi Double Hull untuk Small Tanker. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Double Hull merupakan konstruksi memanjang di sepanjang ruang muat tanker untuk melindungi muatan dari kebocoran. Berdasarkan regulasi MARPOL 73/78 Annex I Chapter IV Part A Reg 19, mewajibkan tanker lebih dari 600 deadweight (DWT) memiliki konstruksi double hull dan double bottom di sepanjang ruang muatnya. Dengan adanya konstruksi double hull, maka dapat mengurangi muatan kapal tersebut, sehingga perlu dilakukannya optimisasi double hull. Penelitian ini diharapkan mampu mendapatkan desain konfigurasi double hull yang optimal serta mengetahui faktor-faktor yang mempengaruhi optimisasi. Dari penelitian ini akan dilakukan analisis secara teknis dan ekonomis pada desain kapal yang telah dilakukan optimisasi. Variabel dalam optimisasi ini adalah lebar double hull dan cargo landing point pada double hull dan double bottom. Fungsi objektif dari optimisasi ini adalah penambahan volume ruang muat. Metode optimisasi yang digunakan adalah direct search method, dimana solusi terbaik akan dicari dengan mengevaluasi nilai fungsi pada beberapa titik. Optimisasi dilakukan pada existing ship tanker 3500 DWT. Existing ship akan dimodelkan dengan Maxsurf Modeler dengan koreksi margin 0,2%. Kemudian, double hull akan dioptimisasi dengan menggeser cargo landing point pada 10 knuckles. Optimisasi dilakukan dengan bantuan program pada software Visual Basic for Application. Setelah didapatkan lebar double hull dan posisi cargo landing point yang optimal, dilakukan pergeseran cargo landing point pada Maxsurf Modeler, kemudian menganalisis stabilitas, freeboard, dan SWSF SWBM menggunakan software Maxsurf Stability, untuk memastikan kapal yang telah dioptimisasi tetap memenuhi regulasi yang berlaku. Setelah dilakukan optimisasi, didapatkan penambahan volume sebesar 80,263 m3 atau sebesar 2% dari volume muatan awal. Adanya penambahan volume muatan, berpotensi untuk dilakukannya pengurangan panjang kapal sebesar 0,96 m pada frame 78-80 apabila akan dibangun kapal dengan payload yang sama. Pengurangan panjang kapal dapat mengurangi berat konstruksi hingga 21,092 ton sehingga dapat mengurangi biaya material baja dan tenaga kerja sebesar Rp 1.478.521.554,99
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Double Hull is a longitudinal construction along the tanker's loading space to protect cargo from leakage. Based on MARPOL 73/78 Annex I Chapter IV Part A Reg 19 regulation, requires tankers over 600 deadweight (DWT) to have double hull and double bottom construction along the loading space. With the double hull construction, it can reduce the ship's load, so it is necessary to optimize the double hull. This research is expected to get the optimal double hull configuration design and find out the factors that affect optimization. From this research, technical and economic analysis will be carried out on the ship design that has been optimized. The variables in this optimization are double hull width and cargo landing point on double hull and double bottom. The objective function of this optimization is the addition of loading space volume. The optimization method used is direct search method, where the best solution will be sought by evaluating the function value at several points. Optimization is carried out on an existing 3500 DWT tanker ship. The existing ship will be modeled with Maxsurf Modeler with 0.2% margin correction. Then, the double hull will be optimized by shifting the cargo landing point at ten knuckles. Optimization is done with the help of a program on Visual Basic for Application software. After obtaining the optimal double hull width and cargo landing point position, the cargo landing point is shifted in Maxsurf Modeler, then analyzing the stability, freeboard, and SWSF and SWBM using Maxsurf Stability software, to ensure that the optimized ship still meets the applicable regulations. After optimization, an additional volume of 80,263 m3, or 2% of the initial cargo volume, was obtained. The additional cargo volume has the potential to reduce the length of the ship by 0.96 m in frames 78-80 if a ship with the same payload is to be built. Reducing the length of the ship can reduce the construction weight by 21,092 tons so that it can reduce steel material costs and labor cost by Rp 1.478.521.554,99.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Optimisasi, Tanker, Cargo Oil Tank, Double Hull, Cargo Landing Point, Optimization.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Risma Siswi Cahyanti
Date Deposited:	02 Aug 2024 06:35
Last Modified:	02 Aug 2024 06:35
URI:	http://repository.its.ac.id/id/eprint/111857

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