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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Navigation and Port Research
Journal Basic Information
Journal DOI :
Korean Institute of Navigation and Port Research
Editor in Chief :
Volume & Issues
Volume 29, Issue 9 - Dec 2005
Volume 29, Issue 10 - Dec 2005
Volume 29, Issue 8 - Oct 2005
Volume 29, Issue 7 - Sep 2005
Volume 29, Issue 6 - Aug 2005
Volume 29, Issue 5 - Jun 2005
Volume 29, Issue 4 - Jun 2005
Volume 29, Issue 3 - Apr 2005
Volume 29, Issue 2 - Mar 2005
Volume 29, Issue 1 - Feb 2005
Selecting the target year
Overall studies on the IMO manoeuvrability standard and problems arising in application of the criteria of it to various kinds of vessels
Lee Chun-Ki ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 595~601
DOI : 10.5394/KINPR.2005.29.7.595
The IMO manoeuvrability standard was established for preventing sea accidents such as collisions and strandings due to the lack of manoeuvrability. The standard of ship manoeuvrability enforced by resolution MSC.l37(76) has been applied to vessels of 100m or more in length and all chemical tankers and gas carriers regardless of the length, which were constructed on or after 1 July 1994. The IMO manoeuvrability standard is able to be divided into three kinds as followings; (1) Turning capability standard: Estimated values in design stage are to be certified by turning circle test of the actual vessel. (2) Course keeping quality standard : Estimated values in design stage are to be certified by 10 deg. and 20 deg. zig-zag tests of the actual vessel. (3) Shortest stopping distance standard : Estimated value in design stage is to be certified by the shortest stopping distance tested by the actual vessel. In this paper, the authors verified the criteria of IMO manoeuvrability standard comparing them with the values resulted from sea trial tests of various kinds of actual vessels and examined separately the validity of all criteria of the standard.
Study on the Development of an Optimal Hull Form
Cho Hee-Jong ; Lee Gyoung-Woo ; Youn Soon-Dong ; Chun Ho-Hwan ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 603~609
DOI : 10.5394/KINPR.2005.29.7.603
This paper presents the method for developing an optimum hull form with minimum wave resistance using SQP( sequential quadratic programming) as an optimization technique. The wave resistance is evaluated by a Rankine source panel method with non-linear free surface conditions and the ITTC 1957 friction line is used to predict the frictional resistance coefficient. The geometry of the hull surface is represented and modified using NURBS(Non-Uniform Rational B-Spline) surface patches. To verify the validity of the developed program the numerical calculations for Wigley hull and Series 60 Cb=0.6 hull are performed and the results obtained after the numerical calculations are compared with the initial hulls.
A Study on the Errors In the Free-Gyro Positioning System (I)
Jeong Tae-Gweon ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 611~614
DOI : 10.5394/KINPR.2005.29.7.611
This paper is to develop the position error equation of in the free-gyro positioning system by using two free gyros. First, the determination of a position is analyzed on the ellipsoid of the Earth and the type of the errors is defined Finally the position error equation is introduced and developed, based on the definition of the type of errors which may be involved in the FPS.
Modified Wilkinson Power Divider for Multiple Harmonics Suppression
Kang In-Ho ; Xu Hai-Yan ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 615~618
DOI : 10.5394/KINPR.2005.29.7.615
A new structure of the Wilkinson power divider that can suppress multiple harmonics output is presented The power divider consists of T-type or
-type capacitive loads and shunt resistors. Experimental results show that this power divider suppresses the second and the third harmonic components to less than -38dB, while maintaining the characteristics of a conventional Wilkinson power divider, featuring an equal power split, a simultaneous impedance matching at all ports and a good isolation between output ports.
A Study on the Enhancement of Maritime Security in Korea Maritime Jurisdiction
Lee Eun-Bang ; Yun Jong-Hwui ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 619~625
DOI : 10.5394/KINPR.2005.29.7.619
The security vulnerabilities in Korea maritime domain were mentioned and analysed with the static data of crimes relating to maritime security. The counterterrorism and initiatives to reduce the security risk and to minimize the damage are introduced and evaluated. The maritime security strategy and the near term initiatives to enhance the non-military security at Korean sea and ports are proposed in order to response maritime security threats economically, efficiently and safely.
Analysis of Numerical Model Wave Predictions for Coastal Waters at Gunsan-Janghang Harbor Entrance
Lee Joong-Woo ; Lee Hak-Seung ; Lee Hoon ; Jeon Min-Su ; Kim Kang-Min ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 627~634
DOI : 10.5394/KINPR.2005.29.7.627
Gunsan-Janghang Harbor is located at the mouth of Gum River, on the central west coast of Korea The harbor and coastal boundaries are protected from the effects of the open ocean by natural coastal islands and shoals due to depositions from the river, and two breakwaters. The navigation channel commences at the gap formed by the outer breakwater and extends through a bay via a long channel formed by an isolated jetty. For better understanding and analysis of wave transformation process where a wide coastline changes appear due to on-going reclamation works, we applied the spectral wave model including wind effect to the related site, together with the energy balance models. This paper summarizes comparisons of coastal responses predicted by several numerical wave predictions obtained at the coastal waters near Gunsan-Janghang Harbor. Field and numerical model investigations were initially conducted for the original navigation channel management project. We hope to contribute from this study that coastal engineers are able to use safety the numerical models in the area of port and navigational channel design.
Review on Mega-trends in shipping and port & its implications
Kim Hyun-Duk ; Ahan Ki-Myoung ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 635~640
DOI : 10.5394/KINPR.2005.29.7.635
This paper aims to understand and analyze the mega-trends such as trends towards larger vessels due to an increasing trade volume, accordingly fewer port calls, strategic alliances and M&A Increasing degree of concentration through M&A activities in shipping industry results in a decreasing number of shipping finns with an increasing share in the world shipping capacity. But competition is strongly increasing on main trunk routes. Therefore, shipping concentration directly leads to further concentration of port traffic in fewer and larger ports with an increasing competition among neighboring ports.
A Study on the Wedge Angle of the Rail Clamp according to the Design Wind Speed Criteria Change
Lee Jung-Myung ; Han Dong-Seop ; Han Geun-Jo ; Jeon Young-Hwan ;
Journal of Navigation and Port Research, volume 29, issue 7, 2005, Pages 641~646
DOI : 10.5394/KINPR.2005.29.7.641
In cargo-working, it unavoidably happens that the quay crane slip along the rail and the container move from side to side. Especially, they involve a lot of risk in bad weather. The rail clamp is a mooring device to prevent that the quay crane slips along the rail due to bad weather or the wind blast while the quay crane do the cargo-working And it will play a greater role in port container terminal integration and automation To design the wedge type rail clamp, it is very important to determine the wedge angle. In this study, we expect that the design wind speed of the quay crane will change over 16m/s. Assuming that the design wind speed is 40m/s, we determined the proper wedge angle of the wedge type rail clamp for the 50ton class quay crane.