• Title, Summary, Keyword: 해양경찰

Search Result 596, Processing Time 0.048 seconds

A Study on the Damage of Delay in Delivery in Maritime Code of P. R. China (중국(中國) 해상법상(海商法上) 인도지연손해(引渡遲延損害)에 관한 소고(小考))

  • Ma, Yanqiu;Hwang, Seok-Kap
    • Journal of the Korean Institute of Navigation
    • /
    • v.25 no.2
    • /
    • pp.195-205
    • /
    • 2001
  • It has been over seven years since Maritime Code of the Peoples Republic of China (hereinafter called the Code) came into force on July 1st 1993. During this period it has played a very important roll in governing Chinas ocean shipping. However, owing to the defects of the Code, many problems have arisen in the performance of the Code, among which is the problem related to delay in delivery. Therefore, it is necessary and inevitable to revise the Code. This study is limited to a rough study on the regulations related to delay in delivery in the Code, such as the definition of delay in delivery, the carriers responsibility for delay in delivery, the carriers exemption from responsibility for delay in delivery, the limitation of responsibility, the procedures of claims for delay in delivery and the difference of the Code from the Korea Commercial Law, the Hague Rules, the Hague-Visby Rules and the Hamburg Rules. Furthermore, some defects in the Code are pointed out and suggestions are provided for the revision of the Code.

  • PDF

Experimental Study for the Development of New Type Water Ejector (신형 수이젝터 개발을 위한 실험연구)

  • Mun, Soo-Bum;Choi, Hyun-Kue;Choi, Jae-Hyuk;Kwon, Hyung-Jung;Kim, Kyung-Keun;Choi, Soon-Ho
    • Journal of Advanced Marine Engineering and Technology
    • /
    • v.30 no.6
    • /
    • pp.677-684
    • /
    • 2006
  • An ejector is a fluid transfer device to be used for mixing of fluids, maintaining vacuum, and overcoming a poor suction condition. To date, most ejectors have been made from the casting process. which is time-consuming and high-cost process. Therefore, a new production method of ejectors is desired if any. In this experimental study, we proposed a new type ejector manufactured from the commercial fitting materials and the welding process, which is equipped with an orifice type nozzle. The proposed ejector has a good integrity compared with the conventional ejector because the fittings have manufactured by forging and they have more strength than the casting materials. Furthermore we adopted a multi-opening orifice type nozzle for improving a suction capacity and compared with a single-opening orifice type nozzle. From the experimental results. we confirmed that the multi-opening nozzle had a food suction capacity than the single-opening nozzle and the proposed new type ejector showed higher vacuum than the conventional type ejector in non-load condition. These improved characteristics suggests that a new type ejector by using the commercial fittings opens the feasibility to be adopted in various industry fields and that the increased suction capacity can be achieved by altering the nozzle design of a conventional ejector.

Behavior Analysis of a Self Excited Induction Generator with Various Loads for a Hybrid Electric Propulsion System (하이브리드 전기추진시스템 구축을 위한 SEIG의 출력 특성 분석)

  • Yang, Joo-Ho;Choi, Gyo-Ho;Lee, Jae-Min;Jeong, Seok-Kwon
    • Journal of Power System Engineering
    • /
    • v.22 no.1
    • /
    • pp.41-47
    • /
    • 2018
  • This paper analyzes the output characteristics of a self excited induction generator with isolated mode according to change of its speeds and loads for building a hybrid electric propulsion system in special purpose ships by using power take off. The induction generators are being considered as an alternative choice to the well-developed generators because of their lower unit cost, inherent ruggedness, operational and maintenance simplicity. However, the generator working by stand alone has a few problems that the reactive power is required to establish the air gap magnetic flux, and the induced voltage and magnetizing current fluctuate when the load is varied. In spite of its advantages, basic design data of the capacitor bank and behaviors of the output characteristics of the generator are not sufficient for the system. Based on the operating condition(speed range of main engine) of the target boat, a reduced experimental equipment system was constructed to analyze the output characteristics of the SEIG. And a suitable capacitor bank of a stand-alone generator and its output characteristics under various loads was investigated in detail through these experiments. According to the experimental result, it was confirmed that the capacitor bank should be $70{\mu}F{\sim}100{\mu}F$, and the proper SEIG induced voltage should be DC 80 V ~ 250 V in order to storage electrical energy into a battery.

Optimum Design of Frame Structures Using Generalized Transfer Stiffness Coefficient Method and Genetic Algorithm (일반화 전달강성계수법과 유전알고리즘을 이용한 골조구조물의 최적설계)

  • Choi, Myung-Soo
    • Journal of Power System Engineering
    • /
    • v.9 no.4
    • /
    • pp.202-208
    • /
    • 2005
  • The genetic algorithm (GA) which is one of the popular optimum algorithm has been used to solve a variety of optimum problems. Because it need not require the gradient of objective function and is easier to find global solution than gradient-based optimum algorithm using the gradient of objective function. However optimum method using the GA and the finite element method (FEM) takes many computational time to solve the optimum structural design problem which has a great number of design variables, constraints, and system with many degrees of freedom. In order to overcome the drawback of the optimum structural design using the GA and the FEM, the author developed a computer program which can optimize frame structures by using the GA and the generalized transfer stiffness coefficient method. In order to confirm the effectiveness of the developed program, it is applied to optimum design of plane frame structures. The computational results by the developed program were compared with those of iterative design.

  • PDF

Dynamic Distributed Hierarchical Routing Plan Method for UTIS and DSRC systems (UTIS, DSRC 통합 동적 분산 계층 경로탐색 기법)

  • Baek, Yeong-Tae;Lee, Se-Hoon;Kim, Sang-Oh
    • Proceedings of the Korean Society of Computer Information Conference
    • /
    • /
    • pp.47-50
    • /
    • 2010
  • 본 논문은 현재 경찰청 및 각 지자체의 주도하에 수도권을 중심으로 새롭게 보급되고 있는 도시 교통 정보 시스템 (UTIS)과 국토해양부 및 한국 도로 공사 등을 중심으로 한 DSRC 기반의 교통 정보 시스템을 모두 활용하는 시스템 및 효율적인 경로탐색 알고리즘을 제안한다. 도시 교통 정보 시스템은 무선랜과 같은 프로토콜을 이용해서, 기존 단방향 방식인 TPEG의 주요 도로 위주의 제한된 교통 정보 단점을 극복하고 많은 지선를 포함한 교통 정보를 제공하고 있다. 그러나 대부분의 운전자들이 단지 도심 내에서만 운전하는 것이 아니고 고속도로 등을 통해서 장거리 운전도 하기 때문에 고속도로 상의 DSRC 기반의 서비스도 동일 단말에서 지원해야 하나의 단말에서 다양한 서비스를 지원받을 수 있다. 따라서 본 논문의 두 개의 다른 통신 모듈의 통합된 단말 시스템을 제안하고 기존에 제안된 UTIS 기반의 분산 경로 탐색 방식을 DSRC 기반의 고속도로 교통 정보를 활용해서 새로운 경로탐색 알고리즘을 제안한다. 또한 향후 추가적으로 이루어질 연구와 현재 다른 주체들의 주도로 이루어지는 서비스를 제도적으로 보완할 수 있는 방안도 제시한다.

  • PDF

Study for VTS Operating Using Bumper Contact point by Bumper Thery (범퍼이론을 사용한 선박접근 인식을 이용한 선박관제기법 연구)

  • Gang, Sang geun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • /
    • pp.26-27
    • /
    • 2019
  • This study is to calculate the Real-Time contact point of ellipses between the vessels ships by Ship's Bumper Theory. The Real-Time contact point of ship's bumper ellipses can be used the important tool to feel the perceived risk evaluation of ship's collision risk by VTS operator. In this paper, The warning information to feel the risk of collision between the vessels in advance is able to help them for VTS operation, We will study the technique to certify the perceived risk of collision from several different angles by programming.

  • PDF

Field operation and improvements of developed VTS (VTS 국산화 개발 시스템의 현장운용과 주요기능 개선사항)

  • Lee, Byung-Gil;Jo, Kwan-tae;Choi, Byeong-Cheol
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • /
    • pp.43-44
    • /
    • 2019
  • In recent years, VTS system was developed in Korea through a government R&D project for domestic manufacturers and operating authorities. The field test of the developed system in a real environment was constructed at the Gunsan VTS center. Testing was conducted for certain new IT convergence technology with VTS, such as traffic analysis, pilotage etc. So, we described some functions and advantages with tested VTS in real environment.

  • PDF

Emergency response system for safe operation of ships (선박 안전운전을 위한 응급대응 시스템 설계)

  • Kim, Yong Su
    • Smart Media Journal
    • /
    • v.5 no.3
    • /
    • pp.81-87
    • /
    • 2016
  • In line with the sharp increase of container traffic from globalization, ships have become larger with an aim of improving the maritime transport capacity in addition to the growing interest in monitoring danger areas on ships considering the quantity increase of ships, along with the tightening of international standard for ship safety by IMO(international Maritime Organization). Korea established a location based ship accident forecasting and preventing system in 2012 by Korea Coast Guard, however its poor response in ship accidents has been pointed out in the wake of the recent disaster of Sewol ferry. To resolve this problem, this study attempts to design a wearable type, instant emergency response system that has DGPS to issue an alert on danger areas and automatically send ship's location and operation information in emergency situation.

Static Analysis of Two Dimensional Curbed Beam Structure by Finite Element-Transfer Stiffness Coefficent Method (유한요소-전달강성계수법에 의한 2차원 곡선 보 구조물의 정적해석)

  • Choi, Myung-Soo
    • Journal of Power System Engineering
    • /
    • v.21 no.6
    • /
    • pp.40-45
    • /
    • 2017
  • The objective of this study is the finite element-transfer stiffness coefficient method, which is the combination of the modeling technique of finite element method and the transfer technique of transfer stiffness coefficient method, is applied in the static analyses of two dimensional curved beam structures. To confirm the effectiveness of the applied method, two computational models are selected and analyzed by using finite element method, finite element-transfer stiffness coefficient method and exact solution. The computational results of the static analyses for two computational models using finite element-transfer stiffness coefficient method are equal to those using finite element method. When the element partition number of curved beam structure is increased, the computational results of the static analyses using both methods approach the exact solution. We confirmed that the finite element-transfer stiffness coefficient method is superior to finite element method when the number of the curved beam elements is increased from the viewpoints of the computational speed and the utility of computer memory.

A Study on the Link Composition Design of a Double Link Type Level Luffing Jib Crane (I) (이중 링크 형식 수평 인입 집 크레인의 링크 구성 설계에 관한 연구( I ))

  • Moon, D.H.;Hur, C.W.;Choi, M.S.
    • Journal of Power System Engineering
    • /
    • v.13 no.1
    • /
    • pp.19-25
    • /
    • 2009
  • This paper is a study on the link composition design of a double link type level luffing jib crane using path generation synthesis passing through three precision points according to parameters, the length of backstay, the ratio of fly jib length between two moving hinges to the total length of fly jib, the location of a intermediate passing point etc. when the maximum and minimum working radius of the crane are given. The performance of the crane depends on the deviation of the luffing trajectory at fly jib tip. The luffing trajectories according to the above parameters are analyzed and shown in graphs by the developed computer program. In a real-life design, some trials are needed to arrive at a proper link composition design. Therefore, it is expected that the present computer program can rapidly and exactly deal with a link composition design proper to the design criteria of the crane.

  • PDF