• Journal of Navigation and Port Research
• /
• v.42 no.6
• /
• pp.491-500
• /
• 2018

Due to changes in the distribution industry, inner harbors have been on a sharp decline in the recent past. However, through the application of the right development plans, such harbors can be revitalized into vibrant urban areas again. The importance of inner harbors has been recognized by the relevant authorities in Korea which are now pushing forward with redevelopment plans for its inner harbors. This study proposes a new approach to redevelopment plans based on the recognition that inner harbors have unique characteristics involving both inland areas and the ocean. In the study, representative inner harbors were selected and analyzed comparatively according to two distinct concepts of location: the Gateway Concept and the Central Place Concept. Based on these concepts, the conditions of the inner harbors were examined. Their location can be typed, and development directions were proposed according to their types and conditions. However, difficult points such as isolation and separation between an urban district and the harbor area, can be obstructions to their potential revival. An inner harbor needs to be considered as an intermediary, connecting place between the ocean and the city, not as another ordinary development area. In addition, a redevelopment plan should be accompanied by a strategic viewpoint to make the most of this feature.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 1994.04a
• /
• pp.69-79
• /
• 1994

• Bulletin of the Society of Naval Architects of Korea
• /
• v.32 no.1
• /
• pp.32-35
• /
• 1995

고속선의 발전방향은 초고속화와 더불어 대형화에 초점이 맞추어져 있으며, 고속선의 대형화는 새로운 복합 지지방식을 필요로 한다. 복합 지지방식은 종래의 지지방식을 두 가지 이상 병행 이용하는 것인데, 현재 개발되고 있는 복합 비비방식들을 보면 내항성이 우수한 전몰 수중동 체(submerged lower hull)나 수중익등이 많이 응용되고 있다. 이는 초고속선에서 내항성능이 차지하는 비중이 매우 큼을 보여주는 것이라 하겠다. 또한, 선박의 대형화 그 자체도 내항성능을 제고시키는 한 방법이 된다. 이상에서 초고속선의 내항성능에 대해 개략적으로 살펴보았다. 현재 각국에서 대형 초고속선의 개발에 경쟁적으로 나서고 있음은 주지의 사실이다. 국내에서도 이에 대한 활발한 연구가 이루어지기를 바라고, 머지 않은 장래에 연구성과가 결실을 맺어 웬만한 황천에서도 안락한 항해가 가능한 우수한 초고속선이 개발되기를 기대해 본다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.04a
• /
• pp.413-414
• /
• 2010

For the purpose of technological analysis in the marine accidents and their prevention, IMO have made it obligatory to load VDR which is similar to the black box in aircraft. However, in case of body sinkage, capsizing, stranding and plunging which are almost 10% of marine accidents, it is difficult to take out the necessary data from the VDR in order to analyze the cause of them. Therefore, this paper apply the navigation dangerousness evaluation technology to the VDR to improve its performance. And we suggest that the vertical acceleration which is one of the factors for evaluating seakeeping performance of a ship is to be added in the existing VDR record data recommended by IMQ.

• Journal of Navigation and Port Research
• /
• v.29 no.10 s.106
• /
• pp.847-852
• /
• 2005

In order to evaluate the safety of navigation at sea and the safety of mooring on berthing, it is necessary that the wave and wind induced ship dynamic motion should be measured in real time domain for the validity of theoretical evaluation method such as sea-keeping performance and safety of mooring. In this paper, the basic design of sensors is discussed and some system configurations were shown. The developed system mainly consists of 4 kinds of sensors such as three-dimensional accelerator, two-dimensional tilt sensor, azimuth sensor and two displacement sensors. Using this measuring system, it can be obtained the 6 degrees of freedom of ship dynamic motions at sea and on berthing such as rolling, pitching, yawing, swaying, heaving, surging under the certain external forces.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2005.10a
• /
• pp.69-74
• /
• 2005

In order to evaluate the safety of navigation at sea and the safety of mooring on berthing, it is necessary that the wave and wind induced ship dynamic motion should be measured in real time domain for the validity of theoretical evaluation method sum as sea-keeping performance and safety of mooring. In this paper, the basic design of sensors is discussed and some system configurations were shown. The developed system mainly consists of 4 kind of sensors sum as three dimensional accelerator, two dimensional tilt sensor, two displacement sensors and azimuth sensor. Using this measuring system(MMS), it can be obtained the 6 degrees of freedom of ship dynamic motions at sea and on berthing sum as rolling, pitching, yawing, swaying, heaving, surging under the certain external forces.

• Journal of Navigation and Port Research
• /
• v.34 no.5
• /
• pp.319-324
• /
• 2010

For the purpose of technological analysis in the marine accidents and their prevention, IMO have made it obligatory to load VDR which is similar to the black box in aircraft. However, in case of body sinkage, capsizing, stranding and plunging which are almost 10% of marine accidents, it is difficult to take out the necessary data from the VDR in order to analyze the cause of them. Therefore, this paper apply the navigation dangerousness evaluation technology to the VDR to improve its performance. And we suggest that the vertical acceleration which is one of the factors for evaluating seakeeping performance of a ship is to be added in the existing VDR record data recommended by IMO.

• Environmental and Resource Economics Review
• /
• v.23 no.1
• /
• pp.1-19
• /
• 2014

Weather seems to influence industries in a variety of ways. On a day-to-day basis, it is the most volatile external factor influencing consumer and market behavior. And, because weather is constantly changing, industries must deal with a continuously shifting array of opportunities and risks. This study aims to examine how climate and weather changes and information, as external environmental factors, have affected the Korean industries, particularly marine shipping and logistics. To find out the economic value of marine weather information, we use measurable results of VVOS(Vessel and Voyage Optimization Services) in the ocean shipping, which the marine weather software tool can save fuel costs up to 4%. When the fuel saving is same as VVOS's performance, the saving of Korean flag ship is estimated about 62 billion won and the saving of total flag ship is estimated about 519 billion won. However, coastal shipping companies have been struggling with the heavy weather factors, such as wave height, wave period and wind. Major findings are that wind and wave height have a significant negative effect on cargo transport, while wave period has a significant positive effect on cargo transport. And to conclude, when we use efficiently the marine weather information, we can increase cargo transport and save fuel costs etc.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2015.07a
• /
• pp.363-365
• /
• 2015

우리나라 연안에서 육지와 섬 사이를 연결하는 해상교량은 계속해서 건설하고 있는 추세이며 해상교량이 선박의 안전한 운항에 새로운 위험요소로 대두되고 있다. 반면에 내항여객선 선장 및 항해사는 무중 레이더만 믿고 항해하여야 하나, 레이더가 해상교량의 주경간 항로와 해상교량 건너편 상황을 탐지하기 어렵다는 레이더의 한계를 인식하지 못하고, 경험과 관행에 의해 무리하게 선박을 운항하고 있다고 판단된다. 이 글은 목포지방해양안전심판원의 관할해역에서 발생한 여객선 비금농협카페리호가 신안1교의 교각과 접촉한 사건의 개요와 원인을 살펴보고, 레이더에 의해 해상교량의 주경간 항로를 식별할 수 있는 대책마련의 필요성, 선박의 해상교량 통항을 위한 최소 가시거리 인식 필요성, 해상교량 주변에 피항지 지정 및 관리, 내항여객선의 VHF청취능력 개선, VTS센터와 한국해운조합 운항관리실의 업무협력 강화, 연안 여객선의 안전문화 정착 필요성, GPS Plotter 과신 주의 등의 교훈 및 개선사항을 제시하고 있다.

• Journal of Navigation and Port Research
• /
• v.27 no.5
• /
• pp.465-471
• /
• 2003

A coastwise chemical tanker sailing at full speed has capsized during turning in calm water. In the previous paper, we investigated the reasons of the accident by demonstrating the proper correction for the free surface effect of the liquid cargo and the bow-sinkage effect. In this paper, we also carry out model experiments of a transverse pressure under the seawater and an outward heel moment according to the heel angle and rudder angle, on the basis of radius of turning circle, ship's speed and drift angle of model ship occurring in turning. It is also shown that the flooding of seawater onto the deck occurring in turning generated a significant outward heel moment and increased the vertical distance between the center of gravity of the ship and the center of lateral water drag.