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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Navigation and Port Research
Journal Basic Information
Journal DOI :
Korean Institute of Navigation and Port Research
Editor in Chief :
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
Development of Collision Risk Evaluation Model Between Passing Vessel and Mokpo Harbour Bridge
Yim, Jeong-Bin ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 405~415
DOI : 10.5394/KINPR.2010.34.6.405
To assess the possible collision risk between Mokpo Harbour Bridge, which is under construction, and passing vessels, we proposed Real-Time Bridge-Vessel Collision Model (RT-BVCM) in this paper. The mathematical model of RT-BVCM consists of the causation probability by the vessel aberrancy due to navigation environments, the geometric probability by the structural feature of a bridge relative to a ship size and, the failure probability by the ship collision track and the stopping distance which is not to come to a stop before hitting the obstacles. Then, the probabilistic mathematical model represented as risk index with the risk level from 1 to 5. The merit of the proposed model to the collision model proposed by AASHTO (American Association of State Highway and Transportation Officials) is that it can provide enough time to take adequate collision avoiding action. Through the simulation tests to the two kinds of test ships, 3,000 GT and 10,000 GT, it is cleary found that the proposed model can be used as a collision evaluation model to the passing vessel and Mokpo Harbour Bridge.
Study on the Flow Characteristics around a Barge in Still Water
Lee, Sang-Min ; Jeong, Uh-Cheul ; Kim, Hyun-Soo ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 417~422
DOI : 10.5394/KINPR.2010.34.6.417
In this study, the resistance performances of barge are analyzed by model tests and computation using CFD to investigate the flow characteristics around a barge in still water. The model tests are carried out in infinite depth in Inha Technical College Circulation Tank to observe the resistance and the numerical simulations based on VOF(Volume of Fluid) method are performed to analyze the flow around the barge. We have selected two barge models to investigate the flow characteristics according to the different type of barges. The experiments are carried out with the models from 5kts to 10kts(designed speed 7kts) considering the effect of adverse and favorable current. The numerical simulations are performed to analyze the flow and resistance characteristics of barge in the full loaded condition with the target speed and compared with the experimental data to confirm the reliability of the numerical method. The result was that the difference of resistance with 25% occurred at low speed and EHP increased rapidly from 7kts.
A Study on the Crew's Survival ratio according to ship's structure
Kim, Won-Ouk ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 423~427
DOI : 10.5394/KINPR.2010.34.6.423
Land fire receives additional extinguishing methods easily by professional extinguisher. But because of isolation and independence from land when sailing on the sea, ships are difficult to get special help from land. Generally, the death ratio by suffocation is higher than the death rate by flame and to reduce suffocation death ratio, fast evacuation is required. This paper aims to improve survival ratio at ship fires by soot density reduction. This study examines soot density and visibility using FDS. And also examines evacuation time by Pathfinder. The FDS(Fire Dynamic Simulator) is a 3 zone model(Field Model) analysis tool and the patherfinder is a useful analysis tool for evacuation. This research examined about evacuation time using the current regulations of the ship's corridor width and exit width first. And then studied evacuation time again when ship's structure was changed according to the method that is proposed in this paper. And finally compared the results each other.
On the Variation of the Boundary Layer as Hull Surface Roughness
Gim, Ok-Sok ; Oh, Woo-Jun ; Shon, Chang-Bae ; Lee, Gyoung-Woo ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 429~434
DOI : 10.5394/KINPR.2010.34.6.429
The experimental study of the hull surface roughness on a developing turbulent boundary layer which exposed to a variety of operating environments were investigated by performing particle image velocimetry(PIV) in a circulating water channel. The Reynolds number based on the width of roughness was about Re=1000. the roughness elements used were periodically arranged two-dimensionally. the flow visualization, time-mean velocity fields and vorticity fields to measure the flow characteristics were obtained. The investigation shows that the vortex generation and its progress inside the walls. And the center of the vortex was located at the middle of the height of the surface roughness.
A Study for Analysis on Deformation of Rubble Mound Structure Using VOF and DEM Methods
Kim, Mi-Kum ; Kim, Chang-Je ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 435~440
DOI : 10.5394/KINPR.2010.34.6.435
A numerical model, which can compute deformation of rubble mound structures composed with various size materials, was proposed. In the numerical model, wave field into the mound structures was computed by CADMAS-SURF and the deformations of mound structures were computed by DEM. Interaction between wave field and sectional deformation of structure was considered and to present the variation of behaviors caused by various properties of materials, computation was carried out with random coefficients by Monte Carlo simulation method for contact stiffness and friction angle. The experiments were carried out with rubbles and glass balls with radius of 2.9cm, 2.6cm and 1.5cm. And the deformation characteristics of rubble mounds composed with various size materials were clarified. Furthermore the validity and the applicability of the model were discussed by comparing with the experimental results.
Anti-Fouling System for Oscillating Water Column in Buoy
Oh, Jin-Seok ; Jo, Kwan-Jun ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 441~445
DOI : 10.5394/KINPR.2010.34.6.441
The ouput power of wave energy system in buoy is determined according to the inner diameter of oscillating water column and flow resistance. The increase of adhered shellfish inside the water column leads to decrease the inner diameter of wave energy converter. Influx loss of seawater reduces the efficiency of output power in the wave generation system. In this paper, the test result of AFS characteristic is described for preventing the deposition with shellfish and etc. The current of anode is controlled by buck converter, and the control algorithm developed for AFS in buoy. The experimental results is shown excellent preventing capapbility of AFS in buoy.
Characteristics on the Motion Response of a Catamaran Power Yacht
Gim, Ok-Sok ; Oh, Woo-Jun ; Shon, Chang-Bae ; Lee, Gyoung-Woo ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 447~452
DOI : 10.5394/KINPR.2010.34.6.447
A very good seakeeping vessel is able to operate effectively even in high sea states and also the passengers and the cargos are ensured in good conditions. The motions of a high speed boats are highly influenced by speed and dynamic forces even in encounter frequencies so that the assessment of seakeeping ability of the design craft in an early stage needs to be calculated for all three motions and for all ralative wave headings. In this paper, it concludes that RAO and RMS values of the catamaran's 3 motion are calculated according as the variation of Beafort scales and ship's speed. The ship motion response of the catamaran based on the RAO and RMS by encounter angles and speed was calculated.
Global Warming and Trends of Typhoon Variation
Seol, Dong-Il ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 453~458
DOI : 10.5394/KINPR.2010.34.6.453
This paper studies relationship between global warming and trends of typhoon variation by using the meteorological long-term data. The results show that yearly mean typhoon's occurrence numbers decrease and maximum wind speeds strengthen gradually. These results are in accord with most of simulated results. While the normal course of typhoon is increased, the westward course of that is decreased. Typhoon trajectories show that the ratios of normal course 6 : westward course 3 : abnormal course 1 in the last 10 years. Among typhoons which affect to the Korea ones pass through the southern coast of Korea are the most. The numbers of typhoon pass through the western coast of Korea are decreased and those pass through the eastern coast of Korea show increasing trend lately. The notable point in relation to the global warming is that typhoon intensity is strengthened gradually. Watch and counterplan in the viewpoint of prevention to the meteorological disasters are required.
A Study on the Reception of International Convention for the Safe and Environmentally Sound Recycling of Ships in Korea Law - Focusing on Coast Guard's Duties -
Choi, Jong-Ho ; Jung, Yeoun-Bu ; Oh, Jung-Woo ; Gug, Seung-Gi ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 459~470
DOI : 10.5394/KINPR.2010.34.6.459
It is necessary to prepare a plan to accommodate the International Convention in domestic law, focusing on the new duties for the Coast Guard as they pertain to the field of ship recycling, by studying the key issue of the "HONG KONG International Convention for the Safe and Environmentally Sound Recycling of Ships" of the International Maritime Organization(IMO) and through analyzing the current status of the Coast Guard. The Coast Guard is directly responsible for the protection of the marine environment and takes charge of important duties; Therefore, by instituting a legal basis for its new duties, it will not only create new business but also be able to consolidate its role as an important constituent in the sphere of marine conservation and protection.
A Study on Targer Factor Value of Port State Control Inspection Using Absolute Measurement
Jang, Woon-Jae ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 471~477
DOI : 10.5394/KINPR.2010.34.6.471
In recently, IMO consider including an marine casualty factor when Port State Control Inspection evaluate.. This paper proposes an evaluation to Target Factor Values of Port State Control Inspections(PSCITFV) using absolute measurement. To this solve, therefore, this paper used the absolute measurement which is informed compensate the defect and the more rational and objective methode, checked the effectiveness to compare an result with absolute measurement and PSCITFV of Tokyo MOU using Wilcoxson test. Finally, rate change of PSC was investigated by an experiment which changed the values of evaluation factors. As a result, it was evaluation factors of high rate change that was detention, ship's age, casualty factors. Therefore, this factors have to a priority management to do for prevent of PSC.
A Study on Modelling and Tracking Control System Design of RTGC(Rubber-Tired Gantry Crane)
Jeong, Ji-Hyun ; Lee, Dong-Seok ; Jeong, Jeong-Soon ; Kim, Young-Bok ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 479~485
DOI : 10.5394/KINPR.2010.34.6.479
To handle container effectively is one of the most important factors in a port because working time is linked soon into cost. Since the middle of 1990s, RMGC(Rail-Mounted Gantry Crane) and RTGC(Rubber-Tired Gantry Crane) have been developed and widely used to operate containers in the yard. The RTGC is more difficult than RMGC in the automatic control system design. Although, the RTGC is largely advantaged to free driving environment, it has some considerable disadvantages in the system operating. In general, the problems are due to tire slip and lack of tire pressure etc. Therefore, a desirable research result has not been shown in this time. So, in this paper, we propose a new approach to design tracking control system for the RTGC in which the mathematical modeling is included. From the simulation results, the control performance of the designed control systems is evaluated.
Enlargement of Harbour limit and Anchorages according to the development of New Ulsan Port
Yun, Gwi-Ho ; Kim, Bu-Young ; Park, Jin-Soo ; Lee, Yun-Sok ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 487~492
DOI : 10.5394/KINPR.2010.34.6.487
Ulsan Port is the biggest base port for liquid cargoes in Korea and is pushing in earnest for the development of the 'Ulsan New Port' and 'Northeast Asia Oil-Hub' to prepare for continuous shipment growth. However, Ulsan is in the situation which the harbour limit and anchorages are narrower than other trading ports and the occurrence probability of marine accidents is very high due to heavy marine traffic. We will find and suggest the plan to enlarge the harbour limit essentially needed to expand anchorages considering the geomorphological features of Ulsan and the volume of marine traffic in this research. For the enlargement of harbour limit needed to expand anchorages, the anchorage area needed for Ulsan New Port was calculated after the quantitative analysis of enlargement range through the mutual comparison of the area of harbour limit and anchorages with berths and the volume of marine traffic. The reasonable type of harbour limit, which is based on the survey by a group of experts, was also determined after the decision of the range of harbour limit to accommodate the relevant anchorages.
On the Development of Urban Fishing Ports in Busan - Focusing on the Development Demands of Interested Parties -
Seo, Geum-Hong ; Kim, Jae-Bong ; Oh, Yong-Sik ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 493~501
DOI : 10.5394/KINPR.2010.34.6.493
In the central Busan area from Haeundae to Saha, fishing villages are vanished actually in the progress of urbanization, and 17 fishing ports surrounded by urbanized area are left alone and isolated. But, we think these urbanized fishing ports are the very resource which grant the identity as the marine city and they have considerable potentials to enhance the value of neighboring community depending on the proper development of it. In this study, we defined the fishing ports in central Busan area as the representatives of 'urban fishing port', and tried to find the way of coexistence and harmony between 'city' and 'fishing port'. For this purpose, we investigated the fishery potentials, physical environments and development demands of 17 fishing ports in central Busan area, and composed opinions from fishing communities and neighboring inhabitants to set up the long term directions of urban fishing ports development for harmonious coexistence of city and fishing port.
Iterative Container Reselection Methods for Remarshaling in a Container Terminal
Park, Ki-Yeok ; Park, Tae-Jin ; Ryu, Kwang-Ryel ;
Journal of Navigation and Port Research, volume 34, issue 6, 2010, Pages 503~509
DOI : 10.5394/KINPR.2010.34.6.503
Remarshaling is referred to a preparatory task of rearranging containers piled up in a stacking yard to improve the efficiency of loading. Selective remarshaling is required because the time for remarshaling known as large time-consuming task is not enough to remarshal all containers. In this research, we compare two previous researches in more objectively way: heuristic and genetic algorithm based approaches. In addition, we prove the effect of iterative reselection method on dwindling the gap between plan and execution due to the uncertainty of crane operation during execution. Simulation experiments under realistic uncertainty model show that heuristic approaches which have few computational complexity can cope with the uncertainty well when reselection interval is short, but genetic algorithm based approach has advantages when reselection interval that can ensure appropriate number of evolutions is given because of computational complexity for search.