• Journal of Fisheries and Marine Sciences Education
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• v.27 no.2
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• pp.589-600
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• 2015

The purpose of this study was to verify the analysis of differences between importance and satisfaction of destination attractiveness for the national marine sports games using IPA method. By doing so, this study aimed to utilize the result of study for a practical marketing strategy in operating and establishing Korean marine sports market circumstances. The participants of this study consisted of 328 who were participated in marine sport event (yacht, fin-swimming, canoe, triathlon and so on) of 9th national marine sports games. Samples were extracted by convenient sampling method. A total 328 questionnaires were collected in this study except data which did not respond or trustless responded. In data processing, Cronbach's ${\alpha}$, frequency analysis, paired t-test and Importance-Performance Analysis were performed through SPSS 20.0. The results were as follows. First, I quadrant included Programs Multiplicity, Pamphlet, Stand preparations, Food Cleanliness, Effective Progress, Guide Know-How, Food taste. Third, II quadrant included Pre-Publicity, Internet Information, Proper Food Price, Shade Facilities, Convenient Parking, Restroom Cleanliness, Number of Restroom, Safety Facilities. Fourth, III quadrant included Entertaining Program, Number of Guide, Local Culture, Game Progress, Directional Sign. Fifth, IV quadrant included Performance Program, Well-Matched Event, View Distance, Various Food.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.51 no.1
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• pp.71-78
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• 2015

In order to deduce an objective evaluation method of motion seasickness incidence (MSI) by ship motions during underway in irregular waves and to present the fundamental data of passenger comfort on the yacht and the passenger ship according to the result, the MSI of the trainees by the questionnaires was analysed and compared with the rate of variation of salivary ${\alpha}$-amylase activity (VSAA) on the training ship "A-ra ho" of Jeju national university. Relationship between rate of variation (x) by salivary ${\alpha}$-amylase activity and motion seasickness incidence (y) was described by the equation, MSI(%) = 0.6073 x + 12.189 including the correlation coefficient ($R^2=0.9853$). The result obtained through the rate of variation of salivary ${\alpha}$-amylase activity which was the quantitative evaluation method for ship motions causing seasickness was most affected by z-vertical acceleration and occurred within the frequency range 0.1 to 0.3Hz centered on 0.2Hz, and the simulation result based on this finding showed the motion seasickness rate at approximately 4% lower than the rate obtained through the survey.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2011.03a
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• pp.105-105
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• 2011

국내 해양레저산업 중 세일요트산업은 현재 초기시장을 형성하고 있으나, 현재 정부의 해양레저 활성화 정책과 해양레저 인구 또한 관련 협회, 클럽 등의 중심으로 급속한 증가세를 이루고 있다. 이에 요트수요 증대에 따라 요트 관련 부품 소재의 경우에도 향후 그 수요가 대폭 증가할 것으로 예상되어지고 있으며, 그 중 요트용 돛(Sail)의 경우에는 전량 해외 수입에 의존하고 있어 제품개발을 통해 국산화함으로써 해외 제품의 수입대체가 요구되고 있다. 본 연구는 해외의 산업용 폴리에스터 원사로 제조된 요트세일 제품의 특성 및 성능 분석 결과와 국산 고강력 폴리에스터 소재로 제조된 요트 세일 개발 제품의 물성 및 성능을 비교 분석하고자 한다. 세일 제품 개발을 위해 해외 요트용 세일 제품을 분석한 결과, 소재는 고상중합형태의 폴리에스터 산업용 원사를 사용하여 직물자체의 고강도 및 저신도 특성발현을 위한 고밀도 제직을 실시한 것으로 분석 되었으며, 가공에서는 해양에서 사용하는 세일 직물의 특성 상 일광 및 자외선에 대한 내구성을 높이고, 황변을 방지할 수 있도록 하기 위해 직물표면에 멜라민계 수지를 이용한 함침방식의 특수코팅을 실시한 것으로 분석되었다. 이러한 해외 요트용 세일 제품의 분석결과를 바탕으로 국산 고강력 폴리에스터 고밀도 직물에 자외선 및 일광에 대한 내구성이 우수한 무황변 타입의 폴리에스터계 수지를 사용하여 단면 코팅으로 양면코팅 가공효과를 부여하는 나이프 방식의 특수코팅, 에이징 처리를 통해 세일을 제조하였다. 본 연구에서는 제조된 세일 직물 제품에 대해, 물리적 특성을 분석하기 위해 인장 강신도, 무게, 두께 및 주사전자현미경 관찰 등의 테스트를 실시하였으며, 세일 성능 분석을 위해 공기투과도, 일광견뢰도 자외선 조사 후 강도변화, 황변 Test 등의 테스트를 실시하여, 해외 선진 제품과 개발제품의 물성 및 성능에 대해 고찰하였다.

• Journal of Navigation and Port Research
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• v.36 no.10
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• pp.795-801
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• 2012

This paper describes theoretical approach methodology for the Probability based risk Evaluation Techniques (PET) to monitor the risk levels of small-sized sea floater as like a yacht pier. The risk decision-making process by risk criteria with five-step scales is the core concepts of PET. These five-step scales are calculated from cumulative probability distribution of response functions for the sea floater motions using closed-form expressions. In addition, The risk decision-making process of PET with the risk criteria is proposed in this work. To verify the usability of PET, simulation experiments are carried out using mimic signals with the electrical specifications of ADIS16405 sensor that is to be use as measurement tool for the floater motions. As results from experiments, the risk evaluation error by PET shows 0.38 levels in maximum 5.0 levels. These results clearly shown that the proposed PET can be use as the monitoring techniques.

• Journal of Navigation and Port Research
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• v.34 no.6
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• pp.447-452
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• 2010

A very good seakeeping vessel is able to operate effectively even in high sea states and also the passengers and the cargos are ensured in good conditions. The motions of a high speed boats are highly influenced by speed and dynamic forces even in encounter frequencies so that the assessment of seakeeping ability of the design craft in an early stage needs to be calculated for all three motions and for all ralative wave headings. In this paper, it concludes that RAO and RMS values of the catamaran's 3 motion are calculated according as the variation of Beafort scales and ship's speed. The ship motion response of the catamaran based on the RAO and RMS by encounter angles and speed was calculated.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.12
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• pp.1551-1561
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• 2012

Boat or yacht hulls are mainly built using FRP composite materials. FRP boat hull manufacturing has been restricted since 2000 under international regulations on ocean environment safety. FRP composite materials cannot be recycled and require more than 100 years to biodegrade. Therefore, alternatives to FRP have been proposed by many boat builders. Steel, aluminum, and FRP are commonly used as boat hull materials. Their design specifications are proposed as Korean register of shipping. However, the design specifications for inexpensive materials for a small boat have not yet been studied. Small shipbuilders manufacture and sell HDPE canoes or HDPE kayaks. In this study, a hull form was designed based on actual boats. The thickness of an HDPE boat hull was determined based on ISO 12215-5 structural design specifications.

• Journal of Welding and Joining
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• v.34 no.2
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• pp.22-29
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• 2016

Recently, Application of composite materials are increased in transport area for weight reduction. Also, Related technical developments have been implemented actively at domestic and abroad. In particular, The carbon fiber has high strength and ultra light property higher than stainless steel, aluminum, GFRP as Eco-friendly material. Carbon fiber contribute to improving the environmental effect such as fuel saving, expansion of loadage, reducing the exhaustion of carbon dioxide through the weight reduction of transport area. In addition, The carbon fiber is applied to the ship in the area of race yacht, luxury cruise boat as weight reduction and high added-value materials, but there is limited application for general boat because price of carbon fiber is very expensive. For the weight reduction of general boat hull, being used as structure materials, glass fiber and carbon fiber are applied to hull with form of hybrid composite materials, but application of domestic and research for development are incomlete. In this study, An evaluations of mechanical strength property and fatigue strength are performed on composite materials by hybrid weaving of glass fiber and carbon fiber and composite materials forming method by hybrid forming.

• Journal of Digital Convergence
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• v.12 no.10
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• pp.605-613
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• 2014

The purpose of this study is studying the relationship among experience choice, experience effect and experience satisfaction of marine leisure sports for the vitalization of marine leisure tourism. After preparing a questionnaire, investigation and analysis were done by visiting Boryeong area. The result of the study is as following. First, it was found that the major cause of choice in marine leisure sports has positive impact on choice satisfaction. Second, it was found that the major cause of choice has positive impact on experience effect. Third, it was found that the choice satisfaction in marine leisure sports has positive impact on experience effect. Fourth, it wa s found that the marine leisure sports visitors like motor boat, banana boat and yacht experience. Fifth, it is suggested that an equipment rental desk, safety facilities and marine leisure experience facility included in a marine leisure experience center to be built.

• The Journal of the Convergence on Culture Technology
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• v.1 no.1
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• pp.73-77
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• 2015

Existing sports simulators on the market focus on the motion of platform or reality expression using basic visual contents, and are limited to entertainment products. Therefore, the stimulus on 5 senses is not good enough to be applied on high virtual reality. Moreover, there are not enough professional contents to be applied to an educational sports simulator. In this paper, we developed a sport platform by separating the multi axis based common platform module and the sports application module. We designed the common platform which has 4 degrees of freedom such as surge, sway, heave and yaw motion. This platform has the purpose of stabilizing motion and minimizing interference. The changeable sport module which is attached to the common module has 2 degrees of freedom such as roll and pitch, so that it can be applied to the various fields of 2 degrees of freedom virtual reality sports such as horse riding and yacht.

• Journal of Navigation and Port Research
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• v.35 no.6
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• pp.523-531
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• 2011

The recent increase in international car-ferry lines between Korea and Japan as well as China brings needs for proper transportations of special cargo, such as machinery and luxury yacht, etc. International multimodal transport, especially international car ferry through truck-sea-truck system enables to fulfill shippers' needs for "Door to Door Service", of such special goods. However, this international multimodal transport of bulk cargo will cause a possible claim for concealed damages during such transportation. For this reason, this study aims to examine the liability system of the multimodal transport operator as well as to investigate liability for concealed damages theoretically and finally to seek proper measures for them. Futhermore, this paper intends to verify the claims for concealed damages to further the international multimodal transport by car ferries between Korea and Japan.