• 해운
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• no.11 s.22
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• pp.37-37
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• 2005

• Proceedings of the KWS Conference
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• 2005.11a
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• pp.35-37
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• 2005

• Journal of the Society of Naval Architects of Korea
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• v.46 no.2
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• pp.148-154
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• 2009

Type A LPG Carrier is the ship using the low temperature independent cargo tank separate from the hull, which has various support structures for laying independent tanks on the hull. In this paper, the direct strength analysis for the support structures has been performed through the direct load analysis, load transfer, stress analysis and strength assessment. Also, a rational modeling method of support structures has been proposed to obtain the dynamic load between the hull and the separate tank.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2006.06a
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• pp.173-174
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• 2006

• LP가스
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• s.84
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• pp.72-79
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• 2003

일본 LP가스진흥센타가 주최한"03 LP가스국제세미나"가 2월20일-21일까지 도쿄 아까사카의 프린스호텔에서 열렸다. 20일에는 사우디 아람코사와 일본의 프리젠테이션 및 질의가 있었고 이에앞서 파빈&가츠사 및 프랏도쿄에 의한 기조강연이 열렸다. 21일에는 한국과 중국의 수급과 과제, 대형 LPG선시황과 전망에 대한 발표가 있었다. 각 강연자들의 요지와 질의를 소개한다.

• Journal of Welding and Joining
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• v.32 no.4
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• pp.63-68
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• 2014

This paper has an aim to study the effect of PWHT and its conditions(peak temperature and holding time) on the tensile properties and impact toughness of FCAW weld metal in relation to microstructure. Impact toughness was evaluated to apply the cargo tank of liquified gas carriers under the various PWHT condition of each class societies. On the basis of these study, it was found that PWHT conditions within all class societies affect charpy absorbed energy of weld metal little or no, all PWHT weld metals kept similar level of charpy absorbed energy as as-weld weld metal down-to $-60^{\circ}C$ and finally indicated lower energy value than that of as-weld weld metal at $-75^{\circ}C$. It is because the precipitation of 2nd phase was controlled from welding consumable and the grain size was grown by PWHT.

• The Journal of shipping and logistics
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• v.34 no.4
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• pp.615-635
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• 2018

Using data from 2008 to 2017, this study analyzed the financial characteristics of offshore freight shipping companies in Korea, categorized by vessel type, and their impact on business performance. The analysis showed an upward trend in the overall debt ratio of offshore freight transport companies and differences in the financial characteristics of each vessel type as well as the major factors affecting business performance. In particular, the significant factors affecting the ROA performance of the business are the size of business and debt ratio in the LPG line; the growth rate in the bulk line; the size of business, debt ratio, and year in the general freight line; and the size of business, growth rate, entertainment expense rate, debt ratio, and year in the full container line. Therefore, each shipping company needs to recognize differences in key financial factors affecting its performance based on vessel type, implement proactive measures, and diversify its vessel portfolio.