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Abstract Recently, according to the increase of the operating cost and material cost of a ship due to the international oil price, a demand for the lightening of the ship weight is being made from shipping companies, ship owners, and shipyards. To satisfy such demand, many studies for a light ship are being made. Some of them include the optimal design of a hull structure, the proposal of a hull structure of new concept, the application of composite materials such as Fiber Reinforced Plastic (FRP) to a hull structure, and so on. Among them, the former studies are producing actual and effective results. Thus, an optimal design method of a hull structure, that is, a method for lightening the ship weight based on the optimization technique was proposed in this study. For this, we formulated an optimization problem for determining optimal principal dimensions of the hatch cover for lightening of a bulk carrier. Some dimensions representing the shape of the hatch cover were selected as design variables and some limitations related to the maximum stress, maximum deflection, and geometry of the hatch cover were selected as constraints. In addition, the minimization of the weight of the hatch cover was selected as an objective function. To solve this optimization problem, we developed an optimization program based on the genetic algorithm and the Sequential Quadratic Programming (SQP) using C++ language. To evaluate the applicability of the proposed method, it was applied to an optimal principal dimensions problem of the deadweight 180,000 ton bulk carrier. The result shows that the proposed method can decrease the ship weight. Thus, this study will be able to contribute to make energy saving and environment-friendly ship in shipyard.
Publication Date 2012-08-27

Tae-Sub Um, Jeong-Hoon Park, Myung-Il Roh, "Determination of Optimal Principal Dimensions of the Hatch Cover for Lightening of a Bulk Carrier", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-7, 2012.08.27-29


List of Articles
번호 분류 제목 Publication Date
20 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Toward Advanced Mooring Analysis of a Floating Crane Based on Flexible Multibody Dynamics", Proceedings of SUTTC(The Society for Underwater Technology Technical Conference) 2017, Haikou, China, 2017.11.23-24 file 2017-11-23
19 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Ship Mooring Design Based on Flexible Multibody Dynamics", Proceedings of the 13th IMDC, Helsinki, Finland, pp. 563-566, 2018.06.10-14 file 2018-06-11
18 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Modeling of a Mooring System Based on Flexible Multibody Dynamics Considering Contact with Seabed", Proceedings of the 9th ACMD 2018, Xian, China, 2018.08.19-23 file 2018-08-20
17 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Method for the Accurate and Automatic Operation of Offshore Floating Cranes for the Block Erection in Shipyards", Proceedings of OMAE 2020, Held in Virtual Conference, 2020.08.03-07 file 2020-08-05
16 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Control of the Underactuated Gantry Crane for the Block Erection Operation in the Shipyard", MIM 2019, Berlin, Germany, 2019.08.28-30 file 2019-08-29
15 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Collision Analysis of Block Erection by a Floating Crane", Proceedings of ACDDE 2016, Jeju, Korea, 2016.10.25-28 file 2016-10-27
14 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Dynamics-based Collision Analysis for Block Erection in Shipyard", Proceedings of the 30th Asian-Pacific TEAM 2016, Mokpo, Korea, 2016.10.10-13 file 2016-10-12
13 International Conference Hye-Won Lee, Myung-Il Roh, Luman Zhao, Seung-Ho Ham, Nakwan Kim, Chan-Woo Yu, "Integrated Development Environment Of Autonomic Software for USV (Unmanned Surface Vehicle) Based on Ros (Robot Operating System)", Proceedings of ICCAS 2017, Singapore file 2017-09-26
12 International Conference Hye-Won Lee, Myung-Il Roh, Ki-Su Kim, Kuk-Jin Kang, Seong-Yeob Jung, "Arctic Sea Route Planning Based on POLARIS Rule", Proceedings of ISOPE 2019, Honolulu, Hawaii, pp. 875-877, 2019.06.16-21 file 2019-06-20
11 International Conference Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, Woo-Young Choi, Chan-Young Lee, Kyung-Min Seo, Dong-Chul Lee, "Simulation-Based Performances Analysis for Naval Ships at the Initial Design Stage", Proceedings of ISOPE 2016, Rhodes, Greece file 2016-06-30
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