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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 34, Issue 9 - Dec 2010
Volume 34, Issue 10 - Dec 2010
Volume 34, Issue 8 - Oct 2010
Volume 34, Issue 7 - Sep 2010
Volume 34, Issue 6 - Aug 2010
Volume 34, Issue 5 - Jun 2010
Volume 34, Issue 4 - Jun 2010
Volume 34, Issue 3 - Apr 2010
Volume 34, Issue 2 - Mar 2010
Volume 34, Issue 1 - Feb 2010
Selecting the target year
Validation on the Algorithm of Estimation of Collision Risk among Ships based on AIS Data of Actual Ships' Collision Accident
Son, Nam-Sun ; Kim, Sun-Young ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 727~733
DOI : 10.5394/KINPR.2010.34.10.727
An estimation algorithm of collision risk among multiple ships has been developed in order to reduce human error and prevent collision accidents. The algorithm is designed to calculate the collision risk among ships based on Fuzzy theory by using AIS data as traffic information. In this paper, to validate the algorithm, the AIS data of actual collision accident, which occurred between a product carrier and a cargo carrier in Busan harbor in 2009 are collected. The replay simulation is carried out on the actual AIS data and the collision risk is calculated in real time. In this paper, the features of the estimation algorithm of collision risk and the results of replay simulation based on AIS data of actual collision accident are discussed.
A Study on the Safe Manoeuvring of Ships Navigating in Shallow Water under Strong Environmental Forces
Lee, Chun-Ki ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 735~740
DOI : 10.5394/KINPR.2010.34.10.735
This paper focuses on the effects of hydrodynamic forces between overtaking and overtaken vessels moving under the influences of external forces, such as strong wind and current in shallow water, in which condition the ship handling may become very complex. The purpose of this paper is to develop a guideline for safe conducting distance between two ships according to the velocity and the significance of external disturbances.
Study on the Added Resistance of Barge in Waves
Ahn, Byung-Kil ; Lee, Sang-Min ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 741~746
DOI : 10.5394/KINPR.2010.34.10.741
It is necessary to estimate more accurately the resistance of barge in still water and waves to compute the break load of towline and towing power for safety towing performance. The method proposed by government has calculated the total resistance of barge which is composed of frictional resistance, wave making resistance and air resistance considering the shape of hull and towing speed. However, the added resistance is equally applied with the significant wave height regardless of the type of vessels. In this study, we have carried out the numerical calculation to estimate the added resistance of wigley model in waves and compared with the experiment data to confirm the accuracy of the method. Then the computation was executed for the barge varying shape of the bow. As a result, added resistance of barge was differently occurred i.e. 0.3∼1.1 ton according to encounter angle, 0.4∼1.2 ton according to towing speed and 0.5∼1.1 ton according to shape of bow.
A Study on Spatial Composition of Accommodation Area in Accommodation Barge of Offshore Plant
Lee, Han-Seok ; Kang, Young-Hun ; Doe, Geun-Young ; Heo, Dong-Yun ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 747~756
DOI : 10.5394/KINPR.2010.34.10.747
This study is on the spatial composition of accommodation area in accommodation barge. The accommodation barge which is used as living facilities for offshore plants' workers can be classified into Accommodation Work Barge, Accommodation Pipe Lay Barge and Multi-purpose Accommodation Barge. We study on the spatial composition of accommodation area in Accommodation Work Barge, most frequently used, through analyzing G.A drawings of the barges. The spatial composition has great influences into the convenience and amenity for workers' daily life in the accommodation area of accommodation barge. The spatial composition of accommodation area shows many characteristics not in horizontal arrangement on any deck but in vertical space arrangement on layers of decks. The particular types of vertical space composition can be classified into 'Centralized Type' and 'Dispersive Type'. These two types will be the basis of space planning for new accommodation barge.
The Effects of Aerobic Exercise Capacity on Free Oxygen Radical in Blood during Submaximal Exercise in Rowing Ergometer
Kang, Shin-Beum ; Cha, Hwa-Jun ; Ha, Hae-Dong ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 757~762
DOI : 10.5394/KINPR.2010.34.10.757
The purposes of this study were to examine the effects of aerobic exercise capacity on free oxygen radicals in blood(FORB) during submaximal exercise in rowing ergometer and as for study purposes, a set of experiments were conducted using one group of 6 rowing players(RP) and the other group of 6 non rowing players(NRP) at the maximum heart rate reserve(HRR) 85~90% exercise intensity. Oxygen free radical was sampled 5 times including a rest period(ARP), immediate after exercise(IAE), 10 minutes after exercise(10MAE), 20 minutes after exercise(20MAE) and 30 minutes after exercise(30MAE). Accordingly, following findings were derived from current study. The effects of interaction between groups and times were significant in oxygen free radical(p<.05) and post hoc tests revealed that significant differences occurred between 10MAE and 20MAE and between 20MAE and 30MAE. In conclusion, the aerobic exercise capacity excellence RP group had more positive recovery pattern than that in the NRP group from FORB of negative influence to the human body
Design and Implementation of Sensibilities Lighting LED Controller for a Ship
Lee, Jae-Hong ; Park, Ju-Won ; Lim, Jin-Kang ; Lee, Sang-Bae ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 763~768
DOI : 10.5394/KINPR.2010.34.10.763
Today the light of mankind since the dawn of mankind and that they were living "lives" on the huge influence across space is a dynamic energy. Because of this, when all human beings with the light and you can feel more comfortable with a stable mind to the beauty and the pursuit of happiness is to have instincts. In this paper, a fuzzy control system using a combination of external environmental factors, respectively, the conversion of quantitative uncertainty information into the LED lighting is designed to express algorithms, available in indoor circadian control circuit was designed and fabricated LED. Factor in the external environment temperature, humidity, and light intensity values to the controller through the sensor to accept these values and the optimal values for lighting the fuzzy control algorithm is converted into human emotion to feel comfortable to express through the dimming control LED lighting.
Performance Analysis of Acoustic Communication Using OFDM Modulation in Underwater
Han, Jeong-Woo ; Son, Yoon-Jun ; Kim, Ki-Man ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 769~774
DOI : 10.5394/KINPR.2010.34.10.769
The performance of underwater communication system is influenced on channel characteristic. Delay spread cause by reverberation and multi-path happen the ISI (Inter Symbol Interference) and reduces the communication performance. In this paper, we analyze the performance of acoustic communication experiment in underwater to use the OFDM (Orthogonal Frequency Division Multiplexing) technique for overcome the reverberation and multi-path. As a result, we acquired the BER of modulation techniques. The BER of 2kbps data rate is
and BER of 4 kbps data rate is
The Strength Analysis of Mooring winch according to the division angle
Ha, Jeong-Min ; Han, Dong-Seup ; Han, Geun-Jo ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 775~780
DOI : 10.5394/KINPR.2010.34.10.775
In the machinery, the brake system is as important part as machine's working. The situation of emergency stop, the machine doesn't stopped would be occur big accident. This is common things for all of machinery, also for the ships. There are two kind of mooring devices are existed on the ship. One of them, the windlass winch, is used to anchor. The other, the mooring winch is used to moor the ship in pier use the rope tied to bitt on dock. In case of previously been used mooring winch made of a steel plate, and the bolt which was connect brake band and lining broken. In this study, prevent an accident find the position of stress concentration by finite element analysis program. And removed stress concentration. And search the optimum position of the separation angle to be more efficient.
Analysis of Site Condition in Domestic Trade Port for Operation of Mobile Harbor
Lee, Joong-Woo ; Gug, Seung-Gi ; Jung, Dae-Deug ; Yang, Sang-Young ; Kim, Tae-Hyung ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 781~786
DOI : 10.5394/KINPR.2010.34.10.781
In this study, a new concept of ocean transport system, called the mobile harbor serving for a short distance transport of containers with cargo handling cranes between mother containerships and coastal ports, is introduced. Instead of direct berthing a very large containership at the coastal port, Mobile Harbor is moving to the offshore mooring basin with enough water depth condition. Therefore, investigation of the coastal environment, technical condition and limitation of the domestic trade ports for the application of Mobile Harbor, is essential process. To figure out the accessibility of mobile harbor, the environmental conditions, the cargo handling capacity and marine traffic volume and flow pattern has been analyzed with the tools for marine traffic simulation and virtual navigation aids system. The most proper Mobile Harbor mooring areas among trade ports of the south and east coast are selected by analyzing the obtained information and evaluating its application: (1) Under natural environmental conditions such as air and sea weather, three candidate areas are selected such as Masan port, Ulsan port, and Busan(New port) port. (2) Under marine traffic and appropriateness of water facilities, three candidate areas are selected as Mokpo port, Busan(New port) port, and Donghae & Mookho port (3) For a region-based analysis considering handling capacity and the local managed trade ports in vicinity, three candidate areas are selected as Busan region, Yosu & KwangYang region, and Mokpo region. Through this study, the basic guideline for selection of optimum trade port and offshore mooring basin for mothership and Mobile Harbor is recommended. In order to apply the Mobile Harbor to the real water, navigaton aids as the virtual route identification with AIS must be introduced for maritime safety in the vicinity of Mobile Harbor area which berthing and cargo handling is being conducted.
Rapid Chloride Penetration Test for Concrete Based on the Electrochemical Method
Oh, Sang-Gyun ; Park, Dong-Cheon ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 787~792
DOI : 10.5394/KINPR.2010.34.10.787
It is necessary to predict the penetration of chloride ions for designing RC construction in marine environments. However, it takes a long time to obtain chloride migration coefficients. Therefore, the rapid chloride penetration test (RCPT) is generally used to shorten the test time. But there is a difference between chloride migration coefficients determined by rapid chloride penetration tests and those based on exposure in marine environments. In this study, we evaluated the effect on the chloride ion migration coefficient caused by a change in voltage and NaCl concentration. We also compared the relationship between the chloride ion migration coefficient by RCPT and that by exposure in marine environments. As a result of the experiments, we found that there is only a small change in the experimental factors based on changes in voltage and NaCl concentration and since they are so small, we can conclude that they are in the range of experimental error and test results from chloride ion migration coefficients by RCPT and exposure were very different from each other. In the exposure experiments, when the water-cement ratio was increased, the smaller fine air gaps in concrete affected the chloride ion migration coefficient.
Feed supply system for Fish farm in Ocean Sea
Oh, Jin-Seok ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 793~797
DOI : 10.5394/KINPR.2010.34.10.793
The depleting fishes resource and water pollution in coast has a decisive effect on the fish farm and fisheries. For solving these problems the fish farms are moving to the offshore. The fish farms in offshore have to design the strong mechanism as compared with cost's fish farm, and operate by the remote feeding system and monitoring system for safety and management.. This paper describes a remote feeding system for fish farms in offshore. The amount of feed is depending on temperature and fish weight. The fish farm temperature is changed extremely in offshore than on land side. This paper described that the feed amount is calculated automatically according to temperature and fish weight, and the remote feed system. The performance of remote feed system is tested with model.
Analysis on the International Competitiveness of Ship Repair Industry in Korea
Song, Ha-Cheo ; Seo, Mu-Cheon ; Yum, Jae-Seon ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 799~805
DOI : 10.5394/KINPR.2010.34.10.799
Since 2000's, Korea has became the world-leading shipbuilding country with the competitive technologies in design and production. And with the China's economic growth, the three economies (Korea, Japan and China) handle 30 percent of the world`s freight cargoes. Shipping industry of Korea has been also grown up to the top 10 of the world with the newly constructed large ports. In spite of the growing demand for ship repair in Korea, its competitiveness analysis has been insufficient. This paper present the competitiveness analysis of ship repair industry of Korea with the consideration of condition of location, repair cost and technological competitiveness.
Factors Influencing RFID Application Performance in Container Terminal Gate
Go, Bo-Chan ; Chang, Myung-Hee ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 807~815
DOI : 10.5394/KINPR.2010.34.10.807
This study analyzed the correlation between RFID acceptance intention and application, and as a result, extracted the technical stability, system quality and security of RFID as factors that affect the intention of receiving RFID in container terminal gate through preliminary research. This analysis was done on individuals engaged in container terminals which are in operation by adopting RFID in container terminal gate presently, and by distributing totally 255 copies of questionnaire survey, 248 copies were collected. As a result of statistical analysis of this study, the following conclusions were made: First, the technical stability of RFID acceptance in container terminal gate was not statistically significantly high. Second, the system quality and the security of RFID acceptance in container terminal gate were statistically significantly high. Finally, container terminal gate RFID technology acceptance intention was statistically significantly high in application performance.
A study on competitiveness of small ports - Focus on the Ports of Jeollado -
Lee, Myoun-Soo ; Choi, Hoon-Do ; Lim, Dong-Seok ; Kwak, Kyu-Seok ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 817~821
DOI : 10.5394/KINPR.2010.34.10.817
As the environment of Logistics is changing rapidly, the environment of port is also changing. Accordingly, rapid change within port environment appears as the increase of the volume for world wide cargo, liner ship owners' strategy shift, globalization of terminals, heavy competitions to become a hub of Logistics, development of ship engineering. Therefore, the people who are responsible for the operations and managements of ports foresee such changes and accordingly react to ensure competitiveness. As the competition among ports generally goes international, a port needs to be sure that they become superior to any other port regardless of whether it's outside their country or not. Especially Korea is located in the most heavily competitive area which is Far-East. So if we fail to get competitiveness against the other ports, it goes without saying that our ports will be defeated by them. In brief, this paper will discuss the history of study regarding the factors by which a port is selected and also suggest some of elements which can be applied to small ports in the future of it.
A Study on the Development of the Shipping Business Cluster Complex in Busan
Shin, Yong-John ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 823~831
DOI : 10.5394/KINPR.2010.34.10.823
The shipping business industries which are the transport and logistics intensive in Busan, have been small sized and scattered in many areas, that is why they could not create a synergy effect utterly. Because of the need to develop the shipping business cluster complex in Busan in order to concentrate those industries and attract high value added firms, this study tries to suggest an approach to build the cluster. Firstly, how various shipping business related firms in Busan and capital area demand the cluster complex are searched through questioning survey. Secondly, the gradual scheme to integrate lots of business companies, governmental authorities and educational institutes and global strategy to invite domestic and foreign organizations in Myeong Ji area near to Busan New Port. Thirdly, the expected economic benefits of the cluster construction are calculated quantitatively.
A Study on The Status of Vessel Restricted in Her Ability to Manoeuvre in Narrow Channel
Ji, Sang-Won ;
Journal of Navigation and Port Research, volume 34, issue 10, 2010, Pages 833~838
DOI : 10.5394/KINPR.2010.34.10.833
The Supreme Court in Korea judged the conduct of vessels in narrow channel was applied in order to prevent a ship collision in narrow channel, regardless of kind of a ship or weather situation, as application was not excluded as vessel restricted in her ability to manoeuvre without other special circumstances such as receiving the right of keep her course and speed from the other vessel, any priority was not guaranteed for vessel restricted in her ability to manoeuvre in regard to the other vessel following the conduct of vessel in narrow channel. In this judgement, there is concern to cause disorder to interpretation in the rule of narrow channel and responsibility between vessels. Therefore, this study aims to suggest correct interpretation about the rule concerned.