• 수산해양교육연구
• /
• 제9권2호
• /
• pp.167-178
• /
• 1997

It has been expected not only for crew but also for passengers to realize a ship whose rolling and other motions are small as much as possible. Restricting our consideration to the roll reduction, the conventional roll stabilization system, fins or anti-rolling tanks hve been utiized as the actuator. Excessive motions would interfere with the recreational activities of passengers on a cruise ship. Often more than half of the load of a containership is stowed above deck where it is subjected to large acclerations due to rolling. In some situations this may cause some internal damage to the contents of the containers; in more severe situations failure of the lashing can occur and containers may be lost over-board. Underdeck cargo in ordinary cargo ships and bulk commodities in colliers, ore ships and grain ships can shift if the motions become too severe. The purpose of this study is to concentrate on the additions. either internal or external to the hull, that reduce or otherwise improve the motion responses of the hull. It is assumed that the additions are such that their benefit to the motions of the ship outweights any impact on the ability of the ship to perform its assigned task. It is particularly challenging to obtain large improvements in the motion characteristics of existing ships that are being rebuilt or modified for some task not anticipated in their original design. Further the authors will statistically analyze the influence of ruder-roll-yaw coupling motion in the case of application of this advanced control method to various kinds of ship.

• 한국해양환경ㆍ에너지학회지
• /
• 제14권1호
• /
• pp.32-39
• /
• 2011

최근 들어 선박안전 관련 규정이 개정되거나 운항환경이 변화하면 선주사들은 이에 효과적으로 대응하기 위하여 크루즈선을 포함한 여객선을 새로 건조하는 대신 경제적 부담이 적은 기존 선박에 대한 선체개조 즉 컨버전을 많이 실시하고 있다. 컨버전은 선체의 주요 제원을 포함하여 선박의 구조강도, 유체역학적 성능, 여객수 및 화물 용량 등 많은 부분에 변화를 가져오므로 이의 수행에 앞서 세심한 사전 검토가 필요하다. 그러나 아직까지 여객선의 컨버전과 관련된 연구가 수행되지 않았기에, 본 연구에서는 이러한 컨버전을 직접 수행한 컨설팅사들의 보고서를 중심으로 그 동향을 조사하고 분석하여 그 결과 랭스닝 컨버전이 선박의 주요 제원이나 성능에 가장 큰 변화를 발생시킨다는 사실을 확인하였다. 이와 더불어 랭스닝 컨버전을 염두에 두고 건조할 경우 선체개조로 인해 발생하는 문제점들을 최소화하기 위하여 헐 스캔틀링, 선형, 절단 위치 등과 같은 기본설계 단계에서 미리 고려해야 할 요소들에 대해 제시하였다.

• 한국항만경제학회지
• /
• 제25권2호
• /
• pp.73-94
• /
• 2009

본 연구에서는 캄보디아의 내륙수로인 Phnom Penh - Chong Kneas(Siem Reap)항까지의 구간에 교통안전시설을 설치할 경우의 편익에 대해 추정하였다. 먼저 여객선의 승객 및 물동량을 예측하였다. 예측된 여객선의 승객수 및 화물의 종류에 따라 여객선, 일반화물선, 그리고 유류선으로 나누어 각각의 교통량을 예측하였다. 과거의 교통사고 현황을 조사하여 교통안전시설로 인한 안전편익을 추정하였다. 또한 항해자의 심리적 부담경감효과를 화폐가치로 환산한 기타 편익을 산출하였다. 이로써 캄보디아의 해당 내륙수로에서의 2011년부터 2020년까지 교통안전시설에 대한 편익을 추정하였다. Phnom Penh - Chong Kneas(Siem Reap)항의 운항구간에서 내륙수로 교통시설의 안전편익은 비관적, 중도적, 그리고 낙관적 전망에 대해 2011년에 각각 $290, $400, 그리고 $540로 예상되었다. 예측의 최종년도인 2020년에는 안전편익이 각 전망에 따라 $670, $1,360, 그리고 $1,980로 산출되었다. 2011년부터 2020년까지 10년간 총 안전편익을 보면 비관적, 중도적, 그리고 낙관적 전망에 따라 각각 $4,950, $9,420, 그리고 $13,110가 될 것으로 예상되었다. 기타편익은 비관적, 중도적, 그리고 낙관적 전망에 대해 2011년에 각각 $14,700, $20,550, 그리고 $28,000로 예상되었다. 예측의 최종년도인 2020년에는 기타 편익이 각 전망에 따라 $27,650, $61,700, 그리고 $93,250로 산출되었다. 캄보디아의 Phnom Penh - Chong Kneas(Siem Reap)항 구간에서 2011년부터 2020년까지 교통안전시설의 전체 편익은 비관적, 중도적, 그리고 낙관적 전망에 대해 2011년에 각각 $14,990, $20,950, 그리고 $28,540로 예상되었다. 예측의 최종년도인 2020년에는 전체 편익이 각 전망에 따라 $28,320, $63,060, 그리고 $95,230로 추정되었다.

• 전력전자학회논문지
• /
• 제22권4호
• /
• pp.353-359
• /
• 2017

To take advantage of electric propulsion, several large vessel kinds, namely, cruise vessels, icebreakers, drill ships, and warships, have been generally designed with Integrated Power System (IPS). Although most of these vessels have adopted AC distribution IPS, DC distribution IPS ships have recently emerged as a new promising technology thanks to the availability of the products related to the DC distribution system, in which the system's major advantages over AC distribution are reduced weight and fuel consumption. This paper presents the comparison results of a 10-t class fishing boat for the AC distribution and DC distribution cases. By replacing AC distribution system with DC distribution, 31-41% reduction in the weight of the electrical equipment weight and 20-25% reduction in the fuel consumption are expected.

• 대한조선학회논문집
• /
• 제47권5호
• /
• pp.719-724
• /
• 2010

Thousands of passengers and crews are onboard a cruise ship and there are many cabins and large public spaces such as atria and theaters. Therefore it is easy to cause a huge loss of life and damage to property when accidents happen at sea. To improve the safety of passenger ships, in October 2007, IMO proposed MSC.1/Circ.1238 on guidelines for evacuation analysis and recommended its use. However, this guideline is difficult to apply because ship designers need to get many pieces of information from CAD drawings such as width and length of stairs and corridors and manually calculate the evacuation time. In this paper, for practical application of the guidelines, an evacuation time calculation program is developed using AutoCAD .NET API library and C Sharp language.

• 해양환경안전학회지
• /
• 제25권3호
• /
• pp.298-305
• /
• 2019

The demand for the revitalization of marine tourism in Busan North Port is increasing due to changes in functions such as an increase in harbor traffic volume and the expansion of marine leisure space in Busan. As a result, Busan City plans to set a phased alleviation target for prohibition of cruise ship operations, and to lift the prohibition of excursion ship operations in North Port following the cancellation of the prohibition of excursion ship operations in South Port in 2017. The purpose of this study is to evaluate the risk of excursion ship operations in Busan North Port by applying the marine traffic assessment index and to examine the possibility of excursion ship operations. For this purpose, port status, marine accidents, and traffic flow of Busan North Port were investigated. In addition, marine traffic assessment indexes, such as traffic congestion, risk based on an ES Model, and IWRAP MkII, a maritime risk assessment tool, were used to assess the risk and possibility of excursion ship operations in Busan North Port. This study can be used as basic data for analyzing the risk factors that may occur when excursion ships are operated in Busan North Port and to define how excursion ships should operate, with related safety measures.

• Strategy21
• /
• 통권41호
• /
• pp.52-84
• /
• 2017

After finishing Cold War, the U.S. Navy's ability to Sea control has been gradually eroded last 15-20 years. The global security environment demands that the surface Navy rededicate itself to sea control, as a new group of potential adversaries is working to deny U.S. navy command of the sea. China has been increasing their sea denial capability, such as extended anti-surface cruise missile and anti-surface ballistic missile. To cope with this situation, the U.S. Naval Surface Forces Command has announced Surface Forces Strategy: Return to Sea Control. It is a new operating and organizing concept for the U.S. surface fleet called 'distributed lethality'. Under distributed lethality, offensive weapons such as new ASCMs are to be distributed more widely across all types of Navy surface ships, and new operational concept for Navy surface fleet's capability for attacking enemy ships and make it less possible for an enemy to cripple the U.S. fleet by concentrating its attack on a few very high-value Navy surface ships. By increasing the lethality of the surface ships and distributing them across wide areas, the Navy forces potential adversaries to not only consider the threat from our carrier-based aircraft and submarines, but they now consider the threat form all of those surface ships. This idea of using the distributed lethality template to generate surface action groups and adaptive force package and to start thinking about to increase the lethal efficacy of these ships. The U.S. Navy believes distributed lethality increases the Navy's sea control capability and expands U.S. conventional deterrence. Funding new weapons and renovated operating concept to field a more lethal and distributed force will enable us to establish sea control, even in contested area. The U.S. Navy's Surface Forces Strategy provides some useful implications for The ROK Navy. First the ROK Navy need to reconsider sea control mission. securing sea control and exploiting sea control are in a close connection. However, recently the ROK Navy only focuses on exploiting sea control, for instance land attack mission. the ROK Navy is required to reinvigorate sea control mission, such as anti-surface warfare and anti-air warfare. Second, the ROK Navy must seek the way to improve its warfighting capability. It can be achieved by developing high-edge weapons and designing renewed operating concept and embraced new weapon's extended capabilities.

• 한국화재소방학회:학술대회논문집
• /
• 한국화재소방학회 2010년도 춘계학술논문발표회 논문집
• /
• pp.141-146
• /
• 2010

특수선(FPSO, Drillship)의 거주구역이나, 대형 여객선(크루즈선) 공간의 70% 이상을 차지하는 수용시설(accommodation) 즉, 객실, 라운지, 공공장소, 창고 등은 24시간 사람이 상주하는 구역임으로 화재로부터 완벽하게 보호되어야 한다. 이를 위해 국제해사기구(IMO)에서는 SOLAS II-2 Reg. 10.6과 FSS code Ch. 8에 적합한 미분무수 소화설비를 설치할 것을 강제화하고 있다. 이러한 미분무수 소화설비는 미분무수 노즐, 압력용기, 섹션밸브, 펌프유닛 등으로 구성되는데 특히 핵심부품인 미분무수 노즐은 IMO Res. MSC 265(84)에 따라 노즐성능시험 및 화재진압성능시험을 통해 형식승인을 득해야 한다. 본 연구에서 이러한 기준에 만족하는 미분무수 노즐을 개발하고자 선실 및 복도에 대한 화재시험에 이어 공공장소 화재시험을 수행하였으며, 두 가지 천장 높이에 대한 화재진압성능을 평가하였다.

• 대한원격탐사학회지
• /
• 제20권5호
• /
• pp.307-313
• /
• 2004

The trajectories of 8 autonomous profiling floats deployed in the Kuroshio Extension region in February 2001 are used to depict the circulation pattern at the surface and 2000db. The corresponding sea surface topography maps created from satellite altimeter and dynamic height climatology were compared with the tracks of nearly coincident floats and were found to agree well in most cases except for the period June 5 to 16 2001. It is shown that over the period the conspicuous breakaway of the floats from an expected path is possibly associated with the abnormal path of the Kuroshio Extension such as an outbreak event, as revealed by AVHRR infrared and SeaWiFS chlorophyll-a images and cruise data in cross sections.

• 디자인학연구
• /
• 제16권4호
• /
• pp.215-224
• /
• 2003

21세기는 소득증가에도 불구하고 여가시간의 감소로 인하여 최단시간에 다양한 경험을 할 수 있는 크루즈 여행이 최고의 관광상품으로 부상하게 되었고, 여행수요가 증가함에 따라 신규 크루즈 선박의 건조량이 증가하고 있다. 이에 선박수주 세계 1,2위를 지키고 있는 우리나라 조선업계는 부가가치가 높은 크루즈선 시장 진입을 위한 장기전략을 마련하고 크루즈선의 설계와 시공 능력확보 등의 목표를 설정하였으며, 크루즈 산업에 첫발을 내딛는 현시점에서 크루즈선의 변화의 추이에 관심을 가지고 살펴볼 필요성이 있다. 본 연구는 크루즈 산업의 발전동향과 공간구성의 변화를 시기별로 크측즈의 도약기, 침체기, 발전기, 절정기로 나누어 크루즈 선박 내의 승객거주구역의 공간규모ㆍ비율, 공간구성, 공간유형, 실내디자인 특성의 변화추이에 대하여 분석하여 향후 국내에서 크루즈선을 설계함에 있어 실내디자인계획의 기초자료를 구축하고자 한다.