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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Marine Environment & Safety
Journal Basic Information
Journal DOI :
The Korean Society of Marine Environment and safety
Editor in Chief :
Volume & Issues
Volume 18, Issue 6 - Dec 2012
Volume 18, Issue 5 - Oct 2012
Volume 18, Issue 4 - Aug 2012
Volume 18, Issue 3 - Jun 2012
Volume 18, Issue 2 - Apr 2012
Volume 18, Issue 1 - Feb 2012
Selecting the target year
Understanding the Flow Properties by a Numerical Modeling in the South Sea of Korea
Bae, Sang-Wan ; Kim, Dong-Sun ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 295~307
DOI : 10.7837/kosomes.2012.18.4.295
In order to understand the flow properties of the South Sea of Korea, tidal currents, wind-driven currents, density-driven currents and residual flows were investigated by using 3-dimensional numerical model(POM). In offshore regions, tide-induced residual current tends to flow eastward during the spring tide and westward during the neap tide. Total residual flow is irregular due to the bottom topography in the coastal area. The density-driven currents in the coastal area showed to be relatively weak, with little seasonal differences. The special tendency was apparent in the open sea. That is, the flow in the offshore regions showed results similar to that of the Tsushima current. The wind-driven currents in the coastal area showed to be much stronger than in offshore regions. Vertically, the flow of the surface layer was much stronger than that of the bottom layer. Through these results, material transport and diffusion in the south coast, as a basis for predicting the spread of use is expected to be available.
Empirical Study on the Performance Analysis and Function of Jindo Coastal Vessel Traffic Service
Jeong, Jae-Yong ; Jung, Cho-Young ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 308~315
DOI : 10.7837/kosomes.2012.18.4.308
Hebei Spirit Oil Spill that happened in 2007 had prompted the need of revisiting the coastal safety. In response to this, Korea had made an effort to implement VTS in every coastline in the country. There are a lot of theoretical studies on VTS function nowadays, but coastal VTS are less frequently studied. In this paper, performance analysis results and accident prevention activities of Jindo Coastal VTS center were summarized and the Coastal VTS function are investigated. Jindo Coastal VTS covers relatively wide area and various places with various maritime traffic characteristics are the major navigation vessels, which means that it is important to control these vessels. Since the probability of accidents due to human error is relatively high in coastal area due to negligence tendency of crews during coastal area navigation, coastal VTS has to provide sufficient assistance to navigating vessels. Like most harbour VTS, Coastal VTS provides not only main information service, navigational assistance and traffic organization services but also various services related with advanced search-and-rescue assistance, marine national security, maritime crime prevention, oil spill response, traffic services for non-service vessel, and safety supervision for water leisure boats.
A Study on the Designation of MIPO Emergency Ancho
Lee, Yun-Sok ; Kim, Jong-Sung ; Park, Jun-Mo ; Yun, Gwi-Ho ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 316~322
DOI : 10.7837/kosomes.2012.18.4.316
In the port of Ulsan with the area of harbor limit of
, 25,432 vessels have been entering annually and only 35 vessels can anchor simultaneously at the anchorage. The area of harbor limit of Ulsan constitutes just 65 percent compared to
which is an average of main ports in Korea. In this regard, the port of Ulsan needs to expand the area of anchorages inevitably for enhancing the efficiency of port operation. To select the best anchorage area in Mipo harbor with the introduction of a concept of emergency anchorage, this study analyzed the safety of navigation and anchorage, and safety management, etc. in the prospected anchorage on the basis of the marine traffic survey observing traffic density. Furthermore, after drawing preliminary and final schemes through gathering the opinions from maritime users, safety management organizations and academic experts group, the best arrangement of emergency anchorage has been selected through the conference of interested parties. Then, the final scheme was also verified through figuring out the marine traffic system and carrying out the ship handling simulation.
Statistical Analysis of Maritime Traffic Volume at Manila Bay, Philippines
Dimailig, Orlando S. ; Jeong, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 323~330
DOI : 10.7837/kosomes.2012.18.4.323
Manila Bay is home to the Port of Manila with three harbors: North Harbor, South Harbor and MICT(Manila International container Terminal). There is an adjacent fishing port to the north and another port across the Bay, the Limao Port. This study focuses on the volume of traffic movement in the Bay area taken from Manila VTMS raw data of the arrival and departure movements only. It is a two-year period of study of 2010 and 2011 traffic volume. It divides the data according to their numbers; to their sizes measured in gross tons; to the time of vessels' movements, whether daytime or night-time; and to each voyage trade: domestic or foreign. Quantitative values are calculated from the raw data based on the whole population of the two-year period. The results are illustrated by tables and graphs. Statistical measures are applied to determine the spread and frequencies of the data and test any significance from the hypotheses. These are shown in the tabulated form and interpreted to give a better picture of the frequency and volume of traffic. In the end, a summary is offered where it is hoped that this paper will propel further studies of improving the safety behavior in the premier port of the country.
Analysis Report of the Elapse for Costa Concordia's Disaster
Yoon, Dae-Gwun ; Kim, Cheol-Seung ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 331~335
DOI : 10.7837/kosomes.2012.18.4.331
On January 13th 2012 Italian flag Costa Concordia was partly sunk. The ship was carrying 4,252 passengers and crew; in the next few days the bodies of 30 people were found. Two are still missing. Two South Korean passengers and an Italian crew member was rescued from the ship on January 15th, more than 24 hours after the accident. As of June 18th 2012 (The date of presentation) around 32 people had not been accounted for. In this paper, it is viewed and pointed out the cause, problem, and implication for the future. As a result, intelligent innovative evacuation system for the VLPS (Very Large Passenger Ship) should be set up in terms of international maritime safety.
A Legal and Institutional Study on the Activation of Marine Salvage
Lim, Chae-Hyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 336~344
DOI : 10.7837/kosomes.2012.18.4.336
It is very important to salvage the vessel and seafarer rapidly and efficiently when maritime accident occurred, as maritime accident has a bad effect on vessel, seafarer and shipping industry as well as the whole community itself. Especially, marine salvage in relation to the accident involving huge marine pollution and loss of life will be regarded as a more important process because the accident would result more severe damages. However, domestic marine salvage forces are weaker than other country's, and private marine salvage company has poor technical and commercial base even though the Korea Coast Guard and Navy have relatively more modernized equipments and squad. Thus, it is very important to promote marine salvage operation capacity because it is related with the national security as well as the national economy. In this regard, this study examines the promoting method of marine salvage including its public and private section from the perspectives of law and systemic revision.
A Study on the Economic Validity of TSR Connecting TKR
Choi, Kyoung-Hoon ; Park, Gyei-Kark ; Lee, Roman R. ; Yoon, Dae-Gwun ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 345~351
DOI : 10.7837/kosomes.2012.18.4.345
The major trade area of the South Korea is divided into Asia, America and Europe. Generally, marine transportation is the main method of mass cargo transportation, but unlike others, rail transportation is available in the Europe area. Also, as a result of China's growth, South Korea's position as northeast Asia logistics hub has weakened. That is the reason why we need to pay attention to rail transportation, an alternative competitive structure. In accordance with this background, this study focuses on analyzing economic feasibility comparing transportation routes to Europe using Trans-Korea Railway and Trans-Siberia Railway. Factors of analysis are transportation distance, period, cost and additional cost As the result, considering economic feasibility, TKR-TSR route(Route1) is the best transportation approach for six routes. Therefore, using TKR-TSR railway will be the best way to increase nation's competitiveness, in response to Russia government's far-east development strategy.
A Study on the Turbulent Flow Characteristics in the Wake of Transom Sterns using PIV Method
Lee, Gyoung-Woo ; Gim, Ok-Sok ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 352~359
DOI : 10.7837/kosomes.2012.18.4.352
An experiment was carried out to figure out the turbulence flow characteristics in the wake of the transom stern's 2-dimensional section by 2-frame grey level cross correlation PIV method at Re=
. The angles of transom stern are
(Model "B") and
(Model "C") respectively. The depth of wetted surface is 40mm from free surface. Strong turbulence intensity appears at the interaction between the flow separation of the bottom of a model and the free surface. This study provides statistic flow information such as turbulence intensity, Reynolds stress and turbulence kinetic energy. Model C type (Raked transom) has low Reynolds stress and turbulence kinetic energy.
Harmonic Reduction of Electric Propulsion System by Current Injection
Kim, Jong-Su ; Han, Won-Hui ; Seo, Dong-Hoan ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 360~364
DOI : 10.7837/kosomes.2012.18.4.360
AC to DC converter that consists of relatively simple diode rectifier devices has been widely used in the field of the electric propulsion system. Also, since this rectifier includes large harmonics in the input current, a variety of researches have been developed to reduce the harmonics. The proposed method of this paper is to reduce the harmonics included in the input current of rectifiers and propulsion motor by injecting the output current of diode rectifier into the input of them. In addition, the proposed method ensures electrical safety through the respective isolation of the injection current, the source, and the loads using the Wye-Delta insulating transformer applied in current injection device that is installed in the input circuit of rectifiers and propulsion motor. The proposed method is simulated by applying to the electric propulsion ship that is currently operating. We confirm the validity of the proposed method compared with conventional power conversion system.
The Fundamental Study on the Development of Leisure Boat's Drop Test Management System based on ISO 12215-5
Kang, Nam-Seon ; Park, Chung-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 365~370
DOI : 10.7837/kosomes.2012.18.4.365
International Organization for Standardization has recently published ISO 12215-5 which is the small craft-hull construction and scantling. According to ISO 12215-5 AnnexB, the scantling determination can be accomplished by drop test for craft with a length
of 2.5m up to 6m and single-skin construction. The current method, however, of visual test has the issue where it is difficult to make an objective evaluation of ship body strength. In this study, in order to develop an evaluation system that can make a quantitative evaluation of the drop test of leisure boats, the domestic/foreign regulations on drop test of leisure boats are analyzed and the drop test evaluation system is designed, and the system applicability is reviewed through 5-meter level aluminum ship, and the issues incurred by the state of the ship and the posture while dropping were checked.
An Experimental Study on Slamming Impact Pressure and Flow Characteristics by Free Fall of Rectangular Marine Structure
Oh, Seung-Jin ; Gim, Ok-Sok ; Lee, Gyoung-Woo ; Cho, Dae-Wan ;
Journal of the Korean Society of Marine Environment & Safety, volume 18, issue 4, 2012, Pages 371~377
DOI : 10.7837/kosomes.2012.18.4.371
This paper presents an experimental investigation to figure out slamming impact pressure and flow characteristics of a rectangular Marine structure(
) in free fall. The flow field has been obtained by 2-frame grey level cross correlation PIV(Particle Image Velocimetry) method, the impact pressure of the free fall model by a pressure acquisition system(Dewatron). The angles between a model and the free surface are adapted
respectively. Velocity field of water exit has higher better than water entry. The highest point, P2 of impact pressure under the bottom of the model has been appeared about 6 % higher values at 20 degrees than 10 degrees.