Andrian, Trevin (2020) Studi Penurunan Freeboard terhadap Deck Wetness pada Kapal Open Top Container 800 TEUS. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Open top container merupakan salah satu jenis kapal container yang tidak mempunyai tutup palka. Kapal jenis ini riskan terhadap faktor deck wetness karena dapat merusak container dan kargo yang ada di dalamnya. Salah satu kapal jenis open top yang bernama HUANGHAI 4 berkelas CCS (China Classification Society) melakukan model test pada towing tank dengan tinggi gelombang 7,5m. Sedangkan saat beroperasi di Indonesia, tinggi gelombang pada jalur pelayaran hanya sebesar 2,5 – 3m. Sehingga, muncul keinginan dari owner untuk memaksimalkan keuntungan dengan cara meningkatkan displacement dari kapal tersebut. Tugas Akhir ini bertujuan untuk mengetahui probabilitas deck wetness terhadap penurunan freeboard kapal dan juga besar displacement yang dapat ditambahkan. . Running simulasi dan analisis probabilitas deck wetness dilakukan menggunakan metode strip theory dengan bantuan software maxsurf motion. Pengecekan besar probabilitas deck wetness tersebut dilakukan pada lima kondisi sudut heading yaitu: 0 derajat, 45 derajat, 90 derajat, 135 derajat, dan 180 derajat, dengan tinggi gelombang 3m. Selain itu, pengecekan juga dilakukan dengan variasi 5 tinggi freeboard, yaitu 4 meter, 3,5 meter, 3 meter, 2,5 meter, dan 2 meter. Berdasarkan hasil simulasi dan perhitungan numerik maka didapat minimum tinggi freeboard kapal open top container 800 TEUS ini agar tetap memenuhi kriteria deck wetness dan vertical acceleration dari NORDFORSK 1987 adalah sebesar 2,5m. Sehingga, didapat penambahan displacement yang dapat ditambahkan adalah sebesar 4.418 ton atau 24,347% lebih besar dari displacement awal.
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Open top containership is a type of container ship which doesn’t have hatch cover. This type of ship is very risky to deck wetness because it can cause damage to the container and cargo contained in the container. One of this ship called HUANGHAI 4 whom class is CCS (China Classification Society) did its model test of this ship with wave height of 7,5m. Meanwhile, the wave height of its shipping route nowadays is 2,5 – 3m. Thus, the owner wanted to maximize the profit by increasing the ship’s displacement. The purpose of this final project is to find the probability of deck wetness against the reduction of freeboard. The simulation was done with strip theory method and help of maxsurf motion software. The simulation to calculate probability of deck wetness was done in 5 variation of degree which are: 0 degree, 45 degree, 90 degree, 135 degree, and 180 degree, and 3m of wave height. Beside that, this calculation was also done in 5 variation of freeboard, which are 4 meter, 3,5 meter, 3 meter, 2,5 meter, and 2 meter. According to the result of simulation and calculation, it’s concluded that the minimum freeboard height of open top container ship 800 TEUS so that it still fulfill the deck wetness and vertical acceleration criteria from NORDFORSK 1987 is 2,5m. So, the displacement that we can add to the ship is 4.418 tons or 24,347% more from its previous displacement.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSPe 623.824 5 And s-1 |
| Uncontrolled Keywords: | Kapal Open Top Container, Deck Wetness, Akselerasi Vertikal, Penurunan Freeboard, Maxsurf Motion. |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Trevin andrian |
| Date Deposited: | 08 May 2023 01:40 |
| Last Modified: | 08 May 2023 01:40 |
| URI: | http://repository.its.ac.id/id/eprint/73251 |
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