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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Navigation and Port Research
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Journal DOI :
Korean Institute of Navigation and Port Research
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Volume & Issues
Volume 39, Issue 6 - Dec 2015
Volume 39, Issue 5 - Oct 2015
Volume 39, Issue 4 - Aug 2015
Volume 39, Issue 3 - Jun 2015
Volume 39, Issue 2 - Apr 2015
Volume 39, Issue 1 - Feb 2015
Selecting the target year
Analysis of User Requirement for the Improvement of ECDIS to Enhance Navigational Safety and Work Efficiency
Jung, Min ; Park, Yong-Sun ; Kang, Suk-Young ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 141~147
DOI : 10.5394/KINPR.2015.39.3.141
On July 1 2012, the carriage requirement for ECDIS became mandatory in a phased-in manner. The system has since been widely used as a core bridge navigation system and as a replacement for paper charts with a back up arrangement. However operational anomalies have been found in the system internationally. IMO and IHO have recognised these anomalies and seek for solution. This study has been conducted on a survey of seafarers on the use of ECDIS with regard to anomalies identification, level of the seafarer satisfaction and requirements for further functional improvement. From the results, the ECDIS user focused requirements suggested on strengthening the level of navigational safety and efficiency. The efficiency of using main functions of ECDIS was positively evaluated. However, there were concerns regarding its operational safety.
An Analysis on Incident Cases of Dynamic Positioning Vessels
Chae, Chong-Ju ; Jung, Yun-Chul ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 149~156
DOI : 10.5394/KINPR.2015.39.3.149
The Dynamic Positioning System consists of 7 elements which are namely Power system, Human machine interface, DP Computer, Position Reference System(PRS), Sensors, Thruster system and DP Operator. Incidents like loss of position(LOP) on DP vessel usually occur due to errors in these 7 elements. The purpose of this study is to find out safety operation method of DP vessel through qualitative and quantitative analyze of DP LOP incidents which are submitted to IMCA every year. The 612 DP LOP incidents submitted from 2001 to 2010 were analyzed to find out the main cause of the incidents and its rate among other causes. Consequently, the highest rate of incidents involving DP elements are PRS errors. DP computer, Power system, Human error and thruster system came next. The PRS has been analyzed and a flowchart was drawn through expert brainstorming. Also, the conditional probability has been analyzed through Bayesian Networks based on this flowchart. Consequentially, the main causes of drive off incidents were DGPS, microwave radar and HPR. Also, this study identified the main causes of DGPS errors through Bayesian Networks. These causes are signal blocked, electric components failure, relative mode error, signal weak or fail.
Implementation of the Shore-based Maritime Information Service Platform for e-Navigation Strategic Implementation Plan
Jang, In-Sung ; Kim, Min-Soo ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 157~163
DOI : 10.5394/KINPR.2015.39.3.157
Recently, there has been much interest in the e-Navigation that applies a variety of digital devices to shipboard thanks to the high interest to maritime safety and the rapid development of ICT technologies. The e-Navigation proposes a new ICT paradigm in maritime information service and maritime safety. This study proposes the shore-based maritime information service platform that enables the converged services of various kinds of maritime data and the standard ENC based on IHO S-100. The proposed maritime information service platform enables the harmonized integration, presentation and web services of ENC, sensed data such as AIS, ocean weather and currents, and geospatial data. Also, the platform enables the mobile maritime information service through WebApp or App software operating in mobile devices of smart phone or web pad. Finally, the proposed platform accommodates the standard ENC of the existing S-57 and the new S-101, and the standard web services of WMS and WMTS of ISO 19100 and OGC.
A Study on Dynamic Positioning System IMO class upgrade requirements
Chae, Chong-Ju ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 165~172
DOI : 10.5394/KINPR.2015.39.3.165
The class of Dynamic Positioning System is divided in 3 classes depending on its redundancy and reliability according to IMO and classification society. There are 3 DP classes such as DP Class 1, 2 and 3 according to IMO MSC/Circ. 645. Higher DP class vessel has higher reliability, since redundancy concept is applied to the DP vessel depending on its DP class and can operate more safely. There are not enough information about DP class notation, which are needed when a company builds a new or buys second hand DP vessel or modifies DP classes, even the Korean shipyard is building a lot of DP vessels now. Also, the practical case of DP vessel modification, which had been done in Korea, to meet DP notation of IMO and classification society, will be helpful for DP vessel modification and sales industry development in Korea as a new business. As such this research identified what kind of requirements need to be taken into account to be from DP class 1 to DP class 2. The real DP class modification case is used to identify the requirements of DP class upgrade. Through the FMEA the redundancy concept on power system, thruster system and DP control system need to apply for DP class upgrade. The power system have to keep its DP function even if just a single fault happens on the generator or switchboard. Also, the PMS is required to monitor and control power system. Ship's Surge, Sway and Yaw movements can be controlled by the remaining thruster system after a single thruster fails. Lastly, multiple installation of PRS, sensors and DP control system are required to keep DP ability after a single fault on the DP control systems.
Estimation of Hydrodynamic Derivatives and Dynamic Stability for Submarine Using Captive Model Test
Jeong, Jae-Hun ; Ok, Ji-Hun ; Lee, Chi-Seung ; Lee, Jae-Myung ; Lee, Seung-Keon ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 173~178
DOI : 10.5394/KINPR.2015.39.3.173
In these days, the world has been increasing the development of various underwater vehicles such as ROVs (Remotely operated underwater vehicles) and AUVs (Autonomous underwater vehicles). And the importance of submarine's maneuverability is especially being emphasized. Therefore, accurate values of the derivatives in equations of motion are required to control motion of the submarines. The aims of the present study are to experimentally derive Hydrodynamic derivatives derived by the vertical planar motion mechanism (VPMM) model test, and to estimate vertical dynamic stability was estimated by using the linear hydrodynamic derivatives, the hydrodynamic derivatives of the submarine, which have a high propriety, were provided by using the fourier analysis of measured forces and moments. Furthermore it is confirmed that the experimental derivatives shows well agreement with the theoretical estimations, and the dynamic stability of the submarine was estimated as a good state, which implies that the value is greater than zero.
A Study on Damage Detection of Production Riser
Je, Hyun-Min ; Park, Soo-Yong ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 179~184
DOI : 10.5394/KINPR.2015.39.3.179
The purpose of this study is to provide appropriate methodology to ensure the safety and integrity of the production riser in offshore structure. In order to select integrity estimation methodology for production riser, level I and II Non-destructive Damage Evaluation (NDE) methods that were applied to existing structures are classified and reviewed. Numerical analysis is performed to verify the applicability and capability on damage detection of reviewed methods. As a result, the damage detection methodology using modal strain energy is more sensitive in detection of the damage than other methods. In practice, the number of sensors is limited due to the environmental and financial conditions. The impact on damage detection performance by reducing the number of sensors is systematically investigated through a series of numerical analyses and the results are discussed. The optimal number of sensor for the integrity estimation of production riser is recommended.
Characteristics of Stabilization and Adsorption of Heavy Metal (As
) by Modified Activated Carbon
Shin, Woo-Seok ; Na, Kyu-Ri ; Kim, Young-Kee ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 185~192
DOI : 10.5394/KINPR.2015.39.3.185
In this study, the adsorption efficiency of mixed heavy metals in aqueous solution was investigated using modified activated carbon. Moreover, the heavy-metal stabilization treatment of contaminated marine sediment was achieved using modified activated carbon as stabilizing agents. From the experimental results, it was shown that the adsorption equilibrium was attained after 120 mins. Heavy metal adsorption was characterized using Freundlich and Langmuir equations. The equilibrium adsorption data were fitted well to the Langmuir model in modified activated carbon. The adsorption uptake of
(28.47 mg/g) was higher than
(13.28 mg/g). In case of the
, the results showed that adsorption uptake decreased with increasing pH from 6 to 10. However, adsorption of
slightly increased in the increasing change of pH. The modified activated carbon was applied for a wet-curing duration of 120 days. From the sequential extraction results, the exchangeable, carbonate, and oxides fractions of Cr and As in sediment decreased by 5.8% and 7.6%, respectively.
A Research on the Perception Level of Seafarer Related Organizations in Seafarer's Actual Health Care Conditions
Kim, Jae-Ho ; Jeon, Yeong-Woo ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 193~198
DOI : 10.5394/KINPR.2015.39.3.193
This research was conducted to provide an improvement plan concerning medical treatment on board and medical health care conditions for seafarers. 139 persons from government agencies and seafarer related organizations, who could influence the government's seafarers healthcare policy-making, were asked to fill in the questionnaire prepared for this research about their perceptive views on actual condition of health and disease management for seafarers. The results of the survey on seafarer's health care management conditions(p<0.01), health care manage ability(p<0.01), current radio emergency medical service policy(p<0.01), usefulness of on board medicine chest and medical equipment(p<0.05), and the system of the onboard medical care persons show the difference of perception level among the seafarer related organizations. But generally, the rate of negative responses was high. And this research suggests that there is an urgent need to provide portable health measurement equipment on board, reenforce regular medical examination and establish the seafarer's health promotion center for telemedicine and healthcare management(p<0.01) in order to improve the onboard medical treatment support system for healthcare of seafarers.
A Basic Study on Prediction Module Development of Collision Risk based on Ship's Operator's Consciousness
Park, Young-Soo ; Park, Sang-Won ; Cho, Ik-Soon ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 199~207
DOI : 10.5394/KINPR.2015.39.3.199
In ports of Korea, the marine traffic flow is congested due to a large number of vessels coming in and going out. In order to improve the safety and efficiency of these vessels, South Korea is operating with a Vessel Traffic Service System, which is monitoring its waters for 24 hours. However despite these efforts of the VTS (Vessel Traffic Service) officers, collisions are occurring continuously, the risk situation is analyzed that occurs once in about 20 minutes, the risk may be greater. It investigated to reduce these accidents by providing a safety standard for collision danger in a timely manner. Thus, this study has developed a risk prediction module to predict risk in advance. This module can avoid collision risk to adjust the speed and course of ship using a risk evaluation model based on ship operator's risk perspective. Using this module, the ship operators and VTS officers can easily be identified risks in complex traffic situations, so they can take an appropriate action against danger in near future including course and speed change. To verify the effectiveness of this module, this paper predicted the risk of each encounter situation and confirmed to be capable of identifying a risk changes in specific course and speed changes at Busan coastal water.
A Study on the Tidal Current State of Myeongnyang Strait on the Date of Myeongnyang Sea Battle, by Orbital Period of Celestial Body
Kim, Hyun-Jong ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 209~215
DOI : 10.5394/KINPR.2015.39.3.209
Miraculous victory of Myeongnyang sea battle turned the tide of the Joseon's entire war against Japan and it is regarded as one of the most remarkable sea victories in the world history. In the sea battle of Myeongnyang, on September 16, 1597(lunar calender), the Joseon navy with 13 battle ships, led by Admiral Yi Sun-sin, won the Japanese navy with their fleet of 133 warships. There were several reasons why Admiral Yi decided on this location for battle. Myeongnyang strait is so narrow and had currents so powerful that many ships could not pass strait simultaneously. Therefore, despite being vastly outnumbered, Admiral Yi used terrain and tidal current advantage to defeat Japanese navy's numerical advantage. In order to find out the tidal state of Myeongnyang strait on September 16, 1597, topological phase of sun and moon was studied by orbital period of earth and moon. The tidal state of Myeongnyang strait on September 16, 1597 is estimated based on the theories of tide and tide tables. As a result of this study, time of slack water were found to be 0636, 1248, 1906 and time/speed of maximum tidal current were found to be 0930/8.3kts(NW), 1612/9.9kts(SE).
A Study of Coastal Passenger Ship Routes through Social Network Analysis Method
Ko, Jae-Woo ; Cho, Chang-Mook ; Kim, Sung-Ho ; Jung, Wan-Hee ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 217~222
DOI : 10.5394/KINPR.2015.39.3.217
In this research, sea routes of domestic coaster liners between 2005 and 2013 were studied via social network analysis. Study of the sea routes revealed that they follow power-law in a scale-free form, a characteristic found often in social network. We have looked into centrality, which is a major standard in the field of social network analysis. We have also analyzed the annual changing trend in the centrality of the connectivity, examined the effect of quantity through the comparison with the original quantitative analysis method, and lastly, verified the relationship between the centrality of connectivity and mediation. Then, we were able to identify ports according to priority using these factors. This research assumed and interpreted the coaster liners route as a single network and suggested useful results. Based on these results, directing of development of domestic coaster liners route development and other factors will be achieved more smoothly. And if we utilize social network analysis method in other various fields - for example, the centrality of airport and the diplomatic realations analysis of the neighboring country - we will be able to effectively analyze events in diverse perspectives.
Study on the Job Satisfaction of Customs Officials at Port Customs - Focus on Ocean Fisheries Officials at Port Customs -
Choi, Dong-Hoon ; Park, Jin-Hee ; Lee, Min-Gyu ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 223~231
DOI : 10.5394/KINPR.2015.39.3.223
Korea port customs surveillance of administration is operated around the 24 hours without a break in accordance with the characteristic of trade, in this specific environment, Ocean fisheries officials are performing this important duty. This research investigated various factors which might influence Korea Customs Service civil servants who are engaged in port, based on advanced researches on job satisfaction and Herzberg's two factors(motive hygene factor), and analyzed the difference in job satisfaction in respect of job satisfaction composition according to Ocean fisheries officials at port customs sociodemographic characteristics through a survey. Also, the researcher comprehended the factors of job satisfaction which have the biggest influence on the whole job satisfaction. Based on the analysis result, The researcher expects that the results of this research can contribute to customs administration's inherent goal achievement by finding out customs civil servants' job satisfaction degradation factors, who are engaged in port surveillance of administration, and properly controlling them and improving organizational members' job satisfaction.
Study on Anchored Safety Improvements for Open Sea Anchorage - Focused on Pohang Port
Kim, Jeong-Rok ; Gug, Seung-Gi ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 233~239
DOI : 10.5394/KINPR.2015.39.3.233
Recently, Due to variable marine accident occurred, problems relating to marine accidents have been raised. Of these accidents, designated anchorage of Korea coastal port, spcially open-sea anchorage, occurred dragging anchor and accidents are likely, due to failure to obtain a valid ship's holding power so that it is the situation unsatisfactory that ensuring the safety of the anchored ship and anchorage systematic safety management stadars for the efficent operation of the anchorage. also in case of open-sea anchorage vulnerable to external force of certain conditions due to geographical location and topographical characteristics of the port, accidents are likely dragging anchor by typoon or suddenly strong wind and secondary accidents are concerned. This paper shows standard of limit external force to ensure the safety anchorage each of ship's size through review marine accidents on Pohang port, also it is determined to be used as a basic reference for anchoring safety and efficient anchorage management.
A Study on Competitiveness and Effect Analysis for Developing a Port Specialized in Northern Sea Route
Park, Jin-Hee ; Lee, Min-Gyu ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 241~251
DOI : 10.5394/KINPR.2015.39.3.241
Recently, It became possible to transport freights and energy resources via Northern Sea Route(NSR) as global warming has been accelerated. As a result, all countries of the world and Korean local governments have had a struggle to take the advantageous position first in NSR development. However, this extreme competitions might have a negative effect on the national port industry and cause unnecessary social costs and economic losses. Therefore, the main target of this study is to find the most suitable port for NSR using AHP analysis. Most of the data was gained from previous literatures and public statistics and the weight of each factor was calculated by the result of expert survey. As a result, Busan port has the biggest competitiveness, followed by Yeosu Gwangyang, Ulsan and Incheon. From the result, this study suggested 3 possible scenarios. The first scenario specializing Busan port in NSR focuses more on developing the related businesses such as repair of ships, refueling, ship stores trade than attracting the more cargoes. the second is a strategy to make Ulsan port as a hub for energy resources, especially liquid cargo on NSR. the last is a mixed one to assign suitable roles to the ports according to their competitive capabilities.
Study on the design and the control of an underwater construction robot for port construction
Kim, Tae-Sung ; Kim, Chi-Hyo ; Lee, Min-Ki ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 253~260
DOI : 10.5394/KINPR.2015.39.3.253
There are many efforts to mechanize the process for underwater port construction due to the severe and adverse working environment. This paper presents an underwater construction robot to level rubbles on the seabed for port construction. The robot is composed of a blade and a multi-functional arm to flatten the rubble mound with respect to the reference level at uneven terrain and to dig and dump the rubbles. This research analyzes the kinematics of the blade and the multi-functional arm including track and swing motions with respect to a world coordinate assigned to a reference depth sensor. This analysis is conducted interfacing with the position and orientation sensors installed at the robot. A hydraulic control system is developed to control a track, a blade and a multi-functional arm for rubble leveling work. The experimental results of rubble leveling work conducted by the robot are presented in land and subsea. The working speed of the robot is eight times faster than that of a human diver, and the working quality is acceptable. The robot is expected to have much higher efficiency in deep water where a human diver is unable to work.
The Relationship between Working Capital Management and Profitability : evidence from Korean Shipping Industry
Lee, Sung-Yhun ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 261~266
DOI : 10.5394/KINPR.2015.39.3.261
Many of previous studies suggested that working capital management is an important component of firm's financial decision and efficient working capital management affects firms' profitability and it's value. Recently, Korean shipping firms have been suffering from financial distress by recession of shipping economy. In this point of view, this study tries to investigate the relationship between working capital management and shipping firm's profitability, using panel data on 46 Korean shipping firms for the period of 2004-2013. As result of panel regression, it proved that average payment period, inventory turnover, cash conversion cycle and operating cycle are significantly associated with firms profitabilities such as profit margin ratio and operating profit ratio, and the manager of shipping firm can increase firms profitability by more efficient working capital management. There are strong positive relationships between average payment period and operating cycle and firm's profitability. These results suggest that managers can create firm's value by increasing average payment period and operating cycle. Otherwise inventory turnover and cash conversion cycle have negative relationships with firm's profitability. It means that managers can increase firm's profitability by reducing these variables.
The Effects of the Port Logistics Industry on Port City's Economy
Kim, Sang-Yeol ; Park, Ho ; Koo, Han-Mo ; Ryoo, Dong-Keun ;
Journal of Navigation and Port Research, volume 39, issue 3, 2015, Pages 267~275
DOI : 10.5394/KINPR.2015.39.3.267
Port Logistics Industry plays a crucial role in trade creating added value, and contributes greatly in economic growth of a nation. Multitude of studies have been conducted to develop this industry as a means of intensifying national competitiveness. In line with this trend, this study aims to examine the effect of the Port Logistics Industry on the regional economy focusing on Ulsan, and also compare the industry among five port cities by using Korean Standard Industrial Classification (KSIC) Rev. 9 and 2010 Economy Census. The results of this study demonstrate that the Port Logistics Industry has significant regional employment rate and economic importance, showing the high number of workers (11.7%) and sales (13.1%) in 2010. According to the comparison among five port cities between 2007 and 2011, the increase of annual average in the number of companies of Gwangyang (5.72%) and Ulsan (4.23%) is higher than the national average (1.74%), and Ulsan (23.82%) and Pyeongtaek (25.74%) show high increase of annual average in the number of workers.