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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 38, Issue 6 - Dec 2014
Volume 38, Issue 5 - Oct 2014
Volume 38, Issue 4 - Aug 2014
Volume 38, Issue 3 - Jun 2014
Volume 38, Issue 2 - Apr 2014
Volume 38, Issue 1 - Feb 2014
Selecting the target year
A Study on the Activation Strategy for Female Maritime Officers using AHP
Jeong, Woo-Lee ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 1~9
DOI : 10.5394/KINPR.2014.38.1.1
As the ratio of women's socioeconomic participation expanded, this phenomenon appeared maritime industry. The advent of female seafarers will be the solution for the shortage of seafarer as well as for women's employment instability all over the world. This paper analyzed the state of present female maritime officers and suggested the activation strategy which preliminary female officers advised by AHP and STOW analysis. This paper finds to strengthen their superior aspects like professional knowledge, practical ability, job performance, improve the education system by gender, strengthen the career path and transform the policy for them by sensitively external changes by government and education institutions.
Comparison of Hydrodynamic Coefficients obtained through Implementation of Diverse Methods in Square Tank
Kang, Seunghyun ; Yoon, Hyeon Kyu ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 11~18
DOI : 10.5394/KINPR.2014.38.1.11
To confirm whether the square tank at Changwon National University (CWNU) can be used for estimation of maneuverability, planar motion mechanism (PMM) test and circular motion (CM) test were performed for various conditions. PMM test can be implemented using an XY carriage and a yaw table in the square tank. However, sometimes test section is insufficient for PMM test owing to low length-breadth ratio of the tank. In addition, the speed of a towing carriage is also quite limited. Therefore, it would be useful if PMM test could be effectively performed diagonally, by establishing coupled control logic to drive three servomotors. In addition, Froude number dependency on the estimated hydrodynamic coefficients was checked. Furthermore, CM tests, which cannot be completed in a conventional linear towing tank, were performed, and its results were compared with the results of PMM test. The results of the PMM tests in the diagonal direction were consistent with the results of the test performed in the direction parallel to the sidewall. However, the results of the CM test were greater than those of the PMM test. This tendency was also observed in the results published at Ulsan University.
Bank Effect of a Ship Operating in a Shallow Water and Channel
Park, Dong-Woo ; Choi, Hee-Jong ; Pai, Kwang-Jun ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 19~27
DOI : 10.5394/KINPR.2014.38.1.19
When a ship operates in a shallow water and channel, the hull sinkage and asymmetrical force generated around the ship by the influence of sea bottom and bank walls are caused collision with sea bottom, other ships or the bank itself. Especially, the shipping company and pilots navigating the area of Europe and North America with many channels are deal with it as a important matter to prevent collision. In this paper, hydrodynamic force generated between the ship and bank using the numerical analysis for the safe navigation of ship, that is, sway force and yaw moment should be presumed qualitatively. It makes a program for fluid analysis of the shallow water and bank effect. Analyses are carried out for three kind of parameter, that is, ship's speed, water depth and ship-bank distance for crude oil carriers. The numerical analysis results are compared with results of the experiments and the previous published papers.
Mooring Winch Control System Design Based on Frequency Dependent LQR Control Approach
Goo, Ja-Sam ; Kim, Young-Bok ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 29~37
DOI : 10.5394/KINPR.2014.38.1.29
In this paper, the author consider control system design problem of the surface vessel where any types of floating units are included. To keep their motion/position, the Dynamic Positioning System(DPS) is equipped in. Even though sometimes the thrust systems are installed on them, in general the mooring winch system with the rope/wire is used. Therefore, in this paper we consider a single type mooring winch control problem to keep the vessel's position. For this, we introduce an easy and useful control approach which is based on LQ control theory. In this approach, we introduce the frequency dependent weighting matrices which give the system filters to shape frequency characteristics of the controlled system and guarantee the control performance. Based on this, we will show that the proposed approach works well.
The Study on the Effects of Breakwater Energy Conversion System by Horizontal Plate Installation
Jung, Sung-Young ; Oh, Jin-Seok ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 39~44
DOI : 10.5394/KINPR.2014.38.1.39
Due to the oil price is increasing continuously, active researches on sources of renewable energy has been invigorated. Above all, ocean energy has high-usability because of ocean current has high density and large quantity compared to the wind energy. In this paper, efficiency enhancement of the wave power generation was described through horizontal plate installation at the break water wave power generation system that converts the ocean energy into electricity. The power-conversion efficiency can be improved by horizontal plate installation at existing system, but there has been insufficient studies domestically. The purpose of this paper is to analyze about the effects of the horizontal plate installation on the breakwater wave power generation system by wave basin experiment and to propose a position of horizontal plate installation.
Performance Improvement of Fractal Dimension Estimator Based on a New Sampling Method
Jin, Gang-Gyoo ; Choi, Dong-Sik ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 45~52
DOI : 10.5394/KINPR.2014.38.1.45
Fractal theory has been widely used to quantify the complexity of remotely sensed digital elevation models and images. Despite successful applications of fractals to a variety of fields including computer graphics, engineering and geosciences, the performance of fractal estimators depends highly on data sampling. In this paper, we propose an algorithm for computing the fractal dimension based on the triangular prism method and a new sampling method. The proposed sampling method combines existing two methods, that is, the geometric step method and the divisor step method to increase pixel utilization. In addition, while the existing estimation methods are based on
window, the proposed method expands to
window. The proposed method is applied to generated fractal DEM, Brodatz's image DB and real images taken in the campus to demonstrate its feasibility.
Collision Risk Analysis in Busan Harbour
Gug, Seung-Gi ; Fukuda, Gen ; Cho, A-Ra ; Park, Hye-Ri ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 53~57
DOI : 10.5394/KINPR.2014.38.1.53
This thesis, concentrates on marine collision risks of the area divided by cells. Using a gas molecular collision calculation model, a collision risk model is proposed. Collision risk is estimated by relative angle, relative speed, and ship's density in the cell. For one week, Automatic Identification System (AIS) data was collected and analyzed on the Busan North Port area. The results indicate a high-risk area at the sea route connection point in Busan North Port. It also shows that twilight is the time of day when most collisions occur. This means that the area is high risk due to the number of collisions and other dangerous factors related to twilight. Although there is still need to consider other risks such as grounding risks, the results of this study are useful to for plotting a risk map for the port.
Enactment Trend and Implication of the Polar Code in IMO
Seo, Dae-Won ; Kim, Dae-Heon ; Ha, Tae-Bum ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 59~64
DOI : 10.5394/KINPR.2014.38.1.59
As global warming continues, the rate of ice melting in polar regions is increasing rapidly. The interest related to north polar route is increasing among not only countries near Arctic ocean but also the other countries, In the past, the classification society rule related to a design and operation of ship operating in polar area has been primarily amended by Russia, Norway and Finland located near Artic area. However recently International Maritime Organization decided to legislate the Polar Code to ensure safety of a ship operating in Arctic and Antarctic Ocean, and it is scheduled to be completed until 2014. The present paper focuses on the survey of the current enactment trends of Polar Code and suggests the confrontational strategy in related organization.
K-factor Prediction in Import and Export Cargo Trucks-Concentrated Expressways by Short-Term VDS Data
Kim, Tae-Gon ; Heo, In-Seok ; Jeon, Jae-Hyun ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 65~71
DOI : 10.5394/KINPR.2014.38.1.65
Gyeongbu and Namhae expressways in the country, are the major arterial highways which are connected with the Busan port in the north-south and east-west directions, respectively, and required to study the traffic characteristics about the hourly volume factors(K-factor) by concentrated midium-size and large-size cargo trucks of 20% or higher in expressways. We therefore attempted to predict the K-factor in expressways through the correlation analysis between K-factor and K-factor estimates on the basis of the short-term VDS data collected at the basic segments of the above major expressways. As a result, power model appeared to be appropriate in predicting K-factor by the K-factor estimate based on VDS data for 7 days with a high explanatory power and validity.
A Study on the Status and Improvement of Domestic Marina Port Facility in Aspect of Navigators
Jeong, Woo-Lee ; Park, Jin-Soo ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 73~79
DOI : 10.5394/KINPR.2014.38.1.73
As Korean expanded the leisure time and improved the national incomes, the interest and demands of the marine leisure activities are increasing. However, it needs to considerate the infrastructure improvement for supporting these demands. This paper analyzed the problems based on the status of domestic marina port facilities including the absence of integrated management division and minimum standards for port facilities, governmental-centered administrative procedure, lack of professional manpower and linkage among educational institutes in aspect of navigators To improve these problems, this paper suggest that management system would be user-centered marina for marine leisure activities to make the integrated management division for marina port, the minimum standards for port facilities, realization of CIQ, familiarity for citizen and linkage among educational institutes.
A Study on Time Charter Party For Offshore Service Vessels 2005 - Focusing the Dispute Resolution Clause -
Lee, Chang-Hee ; Kim, Jin-Kwon ;
Journal of Navigation and Port Research, volume 38, issue 1, 2014, Pages 81~87
DOI : 10.5394/KINPR.2014.38.1.81
Today, it is a trend that the demand of offshore plants is constantly growing, along with the advances in technology which are thoroughly needed to the rise of international oil price as well as offshore energy development. In addition, The main sectors of ship building, sale & purchase and chartering market regarding various kind of offshore supporting vessels that supports the business of offshore energy development is now maintaining its steady growth. However, in domestic case, the contract of time charter occasions regarding the offshore support vessel are almost non-existing situation. Thus, the relevant practical study regarding to implementation of various kinds of legal disputes and applicable laws that can be properly applied in time charter and the field of sale & purchase needs to be conducted actively. Therefore, the concept of this study has included the wide comparisons of other special provisions with the existing time-charter by making its base on "Supply Time 2005" which is the worldwide standard form of time charter in offshore support vessel market and its investigation, aiming to provide practical guidance and procedure for implementation of arbitration and applicable law issues which can be applied in legal disputes between parties.