• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2011.06a
• /
• pp.98-100
• /
• 2011

울산항은 입출항 선박의 항행안전을 위해 1996년 9월부터 해상교통관제실(VTS)을 설치운영하고 있으나 많은 물동량으로 빈번한 선박통항과 액화가스, 케미컬 등의 위험화물운송선박의 통항 등의 여러 가지 위험요소가 상존하고 있는 개항장이다. 특히 현대 미포조선소와 인근에 산재해 있는 중소 조선소 등에서 발생되고 있는 선박 조립용 블록을 운송하는 예 부선들의 빈번한 운항은 울산항의 안전한 물류유통에 많은 어려움을 야기하고 있는 실정이다. 한편 울산항 해상교통관제실에서는 레이더사이트의 운항선박에 대한 데이터, PORT-MIS의 선박관련 데이터 및 최근 선박자동식별장치(AIS)의 데이터 등 많은 정보들에 의해 운항 선박들의 항행 안전을 도모하고 있다. 따라서 본 연구에서는 선박 조립용 블록을 주로 운송하는 울산항의 (주)보성해상개발에서 TRS를 이용한 자체 운항관리실을 운용하여 운송효율과 안전운항을 노력하고 있는 상황과 그 결과 울산항 해상교통관제에 미치는 효과에 대해 분석하여 그 효율성을 나타내었다.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.17 no.2
• /
• pp.179-185
• /
• 2011

A marine collision accident occurred at the Jin-do water way. A barge loaded with heavy equipment of Power Generation Plant was being towed at its side by two tugs "A" and "B" from Byeg-pa harbour to the designated position to be used for power generation plant near Jin-do bridge. The Power Generation Plant was 40-meters high loaded atop the barge. When the "tugs and tow" were approaching the Jin-do the bridge, the two towing tugs lost maneuvering control of the barge and it went off-course, hit first the waterway embankment and finally struck the lower part of bridge's span and post musing the barge to capsize and sunk its cargo into the sea. The bridge also suffered damages where the top of the Plant struck At the time of the accident, there was a strong tidal current at the waterway. This paper calculates the safe towing force of barges with heavy loads when traversing in a strong tidal current situation in narrow waterway.

• Journal of Navigation and Port Research
• /
• v.43 no.6
• /
• pp.437-443
• /
• 2019

Aid to navigation is a navigational aid facility that informs a sailing vessel of its location and direction as well as a location of a specific obstacle by means of a light, shape, color, sound, radio wave, etc. It can be valuable in improving the safety of day and night vessel navigation at sea. For the safety of the tug boat, the minimum equipment requirements for each type of tug boat are arranged. Despite these preparations, the collision accidents between tug boats, barges, and light buoys can occur when the tug boat turns due to the length of the tow-line, tidal current, and the barge's momentum etc. The purpose of this study was to propose the basic system that analyzes the physical relationship between two vessels regarding the tug boat-barge-light buoy dynamics and propagate the corresponding data through the aid to navigation management & operation systems in use at each regional oceans and fisheries.

• Journal of Navigation and Port Research
• /
• v.33 no.1
• /
• pp.1-7
• /
• 2009

Navigation speed control is an important factor to improve the traffic safety, it is only researched about maximum speed control until now. Recently, there are lots of the low speed vessels including towing boats, carry heavy shipbuilding blocks in the Korean waters, so the danger degree of navigating vessels was increasing more and more. This paper analysed the effectiveness of minimum speed control with the operation burden's decrease, and it proposed the proper the minimum navigation speed of each traffic volume. Main results of this research are as follows. (1) in the case of 5 ships/hour, minimum speed control is effective if the lowest speed is fixed more than 5kts. (2) in the case of more than 10 ships/hour, speed control is some effective if the lowest speed is established 7kts. (3) But, when there are many ships in the waters, minimum speed control is not effective because distances between ships become near and ships navigate for a long time by a lot of ship having a few difference of relative speed.

• Journal of Navigation and Port Research
• /
• v.31 no.5 s.121
• /
• pp.345-351
• /
• 2007

In approaching sea area of Busan harbour, there are many traffic vessels and external forces such as strong seasonal wind and lateral flow are existed. Since the area caused the risk of navigation and ship operators feel hard to enter/depart on Busan port, we carried our the evaluation of traffic risk and propriety at Busan no.1 fairway. In order to assess the safety in the fairway, we analyzed ship's traffic stream based on the marine traffic survey and evaluated the traffic safety of present Traffic Separation Schemes(TSS) and suggest TSS in the research using full mission ship-handling simulators. As a result, the suggested TSS has an effect on improving the traffic safety. In addition, this paper was to suggest the dredging area of depth of water, the passage of towing vessels and control of warships for preventing of maritime accidents in the Busan no.1 fairway.