• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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• pp.106-107
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• 2005

Small vessels of less then 20 tonnage and leisure boats such as motor boats, sailing yachts, water motorcycle, etc have been excluded from the rules and regulations such as Marine Leisure Safety Act, Ship Act and Ship Safety Act for a long time in Korea. As a result, these small vessels and leisure boats have remained within the blind area of maritime safety and environment protection. Among these vessels and boats, some leisure boats such as motor boats of 20 horse power or more(excluding motor boats equipped with engine inside the vehicles), water motorcycles and rubber boats of 30 horse power or more are incorporated into the Marine Leisure Safety Act through the registry, safety inspection, insurance early 2005 in Korea. In relation to the scope of application of the national Acts concerned, I consider the conflicts between Acts and suggest the subordinate enforcement ordinance and regulations.

• 한국항해항만학회지
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• 제35권9호
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• pp.749-753
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• 2011

A leisure ship has a stand-alone type power system, and a generator is in use on this condition. But the generator cannot be operated in condition of leisure activity, ocean measurement and etc, because of environment and noise. Recently, renewable energy system is connected with power system of the leisure-ship for saving energy. The renewable energy system can not supply the stable power to leisure-ship because power generation changes according to weather condition. And most of the leisure ship is operated without methodical power management system. This study's purpose is to develop SPMS(Smart Power Management System) algorithm using the renewable energy (photovoltaic, wind power and etc.). The proposed algorithm is able to supply stable the power according to operation mode. Furthermore, the SPMS manages electric load (sailing and communication equipment, TV, fan, etc.) and reduces operating times of the generator. In this paper, the proposed algorithm is realized and executed by using LabVIEW. As a result, the hour for operating the generator is minimized.

• Journal of Advanced Marine Engineering and Technology
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• 제36권1호
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• pp.141-148
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• 2012

The power system of leisure ship has a character of stand-alone type, so it continuously checks the usable power. Especially, the leisure ship using renewable energy needs to adjust the power consumption of loads according to the usable power. Also, the important loads of leisure ship are different by operation mode. However, current power management system doesnot consider such character. This paper studied load management system of the SPMS(Smart Power Management System) and composed using the smart plug. The SPMS controls the loads depending on a user's pattern and character through variable priority number control. This control algorithm was verified through simulation of assumed user and situation using LabVIEW.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 추계학술대회지
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• pp.111-124
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• 2005

개정 수상레저안전법은 주5일 근무제의 확대시행과 더불어 수상레저활동의 대중화로 수상레저기구와 수상레저활동자가 급속하게 증가함에 따라 현행 제도의 운영과정에서 나타난 미비점을 보완하고자 2005년 3월에 개정$\cdot$공포되었다. 이 법은 수상레저기구를 이용한 수상레저활동의 안전에 관한 가장 중요한 규정들을 대부분 포함하고 있는데, 특히 수상레저기구의 등록 및 안전검사제도의 신설 도입과 수상레저활동자에 대해 보험가입을 의무화 한 것이 가장 주목할 만 하다. 본 논문에서는 수상레저안전법 개정에 따른 수상레저안전법 하위법령의 개정안과 수상레저기구관련 보험제도의 도입방안에 대하여 살펴보았다. 또 수상레저안전법에서 등록 및 안전검사와 관련하여 적용범위에서 상충될 여지가 있는 선박법 및 선박안전법에 대하여 문제가 되는 부분을 지적하고 이에 대한 해결방안을 제시하였다.

• 대한조선학회논문집
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• 제47권3호
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• pp.321-327
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• 2010

During sailing by wind-driven thrust on the sail, a catamaran sailing yacht generates leeway and heeling. For estimating resistance and moment prediction of a real ship by changing of running attitude, a model test of the ship has to be carried out. This study aims at establishing experimental techniques for a catamaran sailing yacht by changed attitude during running direction. Through the model test, drag and side force of the real ship are predicted. Also through experiment, rolling and yawing moments were considered.

• 해양환경안전학회지
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• 제29권3호
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• pp.288-295
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• 2023

The purpose of this study is to evaluate the feasibility of the new marine leisure ships. In order to achieve the research purpose, the cost and income were calculated based on the operating of other marine leisure ships, and the feasibility of the project was empirically analyzed. This study established a research model that applies the values derived by empirically analyzing ships with similar specifications, to the new marine leisure ships. We then calculated the cost-benefit analysis, net present value, and internal return, and evaluated the feasibility of the project based on this. As a result of the business feasibility analysis of investing in marine leisure ship, it was found that economic feasibility exists with a B/C of 1.042 and 1.049 for new and secondhand ships, respectively; however, considering the stability of the ship and the publicity and continuity of the business operation, it is recommended to invest in new ships compared to secondhand ships. The total benefit over the 10-year operating period using a social discount rate of 4.5% was evaluated to be about KRW 292.0 billion, which is higher than the total cost of KRW 256.6 billion. In conclusion, the profitability analysis showed that the B/C was 1.042, the NPV was KRW 193 billion, and the IRR was 2.1%, which indicates that profitability is weakly secured.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2008년도 춘계학술대회논문집
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• pp.368-372
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• 2008

Habitability is one of the most important points when a passenger ship is cruising. In particular, anti-vibration design should be considered preferentially to offer passenger a comfort cabin and leisure space. But, a passenger ship is different from a general commercial ship in the view point of the structural arrangement. It is restricted within narrow limits to reinforce wide panels and local structures of a passenger ship because of its interior design. Moreover, the allowable vibratory limits for a passenger ship are much lower than those of a commercial ship. In this study are introduced the procedure of the vibration analysis, the structural improvement method for prevention of vibration and the results of vibration measurement during exciter test and sea trials.

• 한국해양공학회지
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• 제30권1호
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• pp.57-67
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• 2016

As a new technical approach, an attempt was made to realize a photovoltaic system for an eco-environmental leisure ship by simultaneously actuating nine photovoltaic solar panels in association with the application of a sail-controlling system using wind energy. In this approach, the photovoltaic system consisted of a solar module, an inverter, a battery, and the relevant components, while the sail-controlling device was equipped with sail up/down and mast turning systems. The previously mentioned eco-environmental leisure ship utilizes a photovoltaic hybrid system that uses solar and wind energy as renewable energy sources. Furthermore, this research included a performance evaluation of the manufactured prototype, the acquisition of the purposed quantity values, and development of the purposed items. The significant items, including the sail up/down speed (seconds) and mast turning angle (degrees) were evaluated for a performance test. A wind direction sensitivity of 90% and maximum instant charging power of 900 W were also obtained in the process of the performance evaluation. In addition, the maximum sail time was also evaluated in order to acquire the optimum value. The performance evaluation showed that the prototype with a photovoltaic hybrid system was suitable for sailing an eco-environmental leisure ship using solar and wind energy.

• 한국항해항만학회지
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• 제41권6호
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• pp.359-364
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• 2017

본 연구는 레저선박 이용 사업법을 검토하여 유사사업 간 규제 내용이 상이한 점과 관련 제도의 미비점을 고찰하고 개선방안을 제시하고자 한다. 주요 연구방법은 레저선박 이용 사업에 관한 법률 및 문헌분석이다. 현재 선박법 선박안전법 및 수상레저안전법에 따라 등록된 레저선박(또는 동력수상레저기구)을 이용하는 사업법은 해운법, 유도선법, 수상레저안전법, 마리나항만법이다. 연구결과, 이들 사업법은 선박 총톤수, 선령, 선원, 주류 판매 기준에 차이가 있는 것으로 나타났다. 이로 인해 선박시설의 구조변경 등으로 총톤수를 조정하는 행위, 선령 제한이 없는 사업에 노후 선박이 투입될 가능성, 선원 기준이 명시되지 않은 사업에 안전에 필요한 선원이 승선하지 않을 가능성, 유사 사업에 주류 판매 기준의 형평성이 어긋나는 문제 등이 제기되었다. 이러한 문제는 레저를 목적으로 하는 선박에 대한 이해가 부족하고 관련 사업법이 수요에 따라 하나씩 추가적으로 제정된 데 기인한 것으로 보인다. 비교적 최근에 등장한 레저용 선박의 특성에 대한 이해를 높이고 그 특성에 비추어 다른 목적의 선박과 같은 기준 혹은 다른 기준을 적용해야 하는 부분을 정리해 나가는 일이 필요하다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2022년도 추계학술대회
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• pp.300-301
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• 2022

신규 해상교통수단을 통한 섬 접근 이동성 강화를 위해서는 해당 선박의 투입에 따른 객관적인 사업성에 대한 검토가 필요하다. 본 연구에서는 기존에 운영 중인 유사 해양레저선박 운영비와 운임기준을 근거로 하여 비용과 수입을 추정한 뒤, 이를 바탕으로 비용-편익 분석, 순현재가치, 내부수익률을 통해 사업 타당성을 실증적으로 분석하였다. 또한 최소 경제성 확보를 위한 요건을 파악하기 위하여 항목별로 민감도 분석을 수행하였다. 연구결과 신조선 도입을 가정하였을 때, B/C 비율이 1.042, NPV는 1.93억 원, IRR은 2.1%로 추정되어 수익성이 미약하게 확보되는 것으로 분석되었다.