• 한국산학기술학회논문지
• /
• 제11권8호
• /
• pp.2827-2834
• /
• 2010

본 논문은 선용품의 공급자와 수요자를 요구를 분석하고자 한다. 또한 부산항에 국제선용품 분배센터를 건립함에 있어 타당성을 파악하고자 하였다. 따라서 선용품 관련 878회사에 설문지를 배부하여 주요 항목에 대한 분석을 하였다. 연구결과 국제선용품 분배센터의 필요성을 보여주었다. 본 논문 결과에 따라 선용품 분배 센터의 성공적 운영에 도움이 될 것이다.

• 한국마린엔지니어링학회:학술대회논문집
• /
• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
• /
• pp.94-97
• /
• 2005

Seaworthiness is an important part of the carrier's obligation in the carriage of goods by sea. Especially seaworthiness of the ship is one of the most important obligations of the carrier in the field of international transport law. Therefore it will be important to examine the expected impacts by adopting a continuing duty of seaworthiness in UNCITRAL Draft Instrument from the Korea point of view because Korean Commercial Act provides that carriers are only obliged to exercise due diligence to make the ship seaworthy before and at the beginning of the voyage. This paper examines the concept of the seaworthiness and analyses the provisions of the Draft Instrument for the duty of seaworthiness in comparison with the Korean Commercial Act.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2006년도 춘계학술대회 및 창립 30주년 심포지엄(논문집)
• /
• pp.411-415
• /
• 2006

세계적인 항만환경의 변화는 매우 빠르게 변하고 있고, 항만들은 물동량을 선점하고 비즈니스 거점확보를 위한 경쟁을 가속화하고있다. 특히 급성장하고 있는 중국과 경제대국 일본 사이에서 우리나라가 21세기 동북아의 물류중심국가로 확고하게 자리잡기 위해서는 항만물류산업의 활성화가 매우 중요한 시점이다. 본 연구에서는 항만물류산업의 한 분야인 선용품 공급업을 대상으로, 업무실태와 문제점등을 살펴본 후, 선용품 유통센터 건립의 타당성을 도출하고자 한다. 또한, 향후 선용품 유통센터 설립을 위한 요인들을 조사하여 센터건립의 최적화 입지를 분석하고자 한다.

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제6권3호
• /
• pp.626-637
• /
• 2014

On ship, especially on large ship, the flexure deformation between Master (M)/Slave (S) Inertial Navigation System (INS) is a key factor which determines the accuracy of the integrated system of M/S INS. In engineering this flexure deformation will be increased with the added ship size. In the M/S INS integrated system, the attitude error between MINS and SINS cannot really reflect the misalignment angle change of SINS due to the flexure deformation. At the same time, the flexure deformation will bring the change of the lever arm size, which further induces the uncertainty of lever arm velocity, resulting in the velocity matching error. To solve this problem, a $H_{\infty}$ algorithm is proposed, in which the attitude and velocity matching error caused by deformation is considered as measurement noise with limited energy, and measurement noise will be restrained by the robustness of $H_{\infty}$ filter. Based on the classical "attitude plus velocity" matching method, the progress of M/S INS information fusion is simulated and compared by using three kinds of schemes, which are known and unknown flexure deformation with standard Kalman filter, and unknown flexure deformation with $H_{\infty}$ filter, respectively. Simulation results indicate that $H_{\infty}$ filter can effectively improve the accuracy of information fusion when flexure deformation is unknown but non-ignorable.

• 한국마린엔지니어링학회:학술대회논문집
• /
• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
• /
• pp.53-54
• /
• 2005

This paper describes that send some signal from encoder attached to crankshaft of marine-engine to measuring instrument using power line modem(PLM) and display cylinder pressure, rpm and etc. on LCD. Conventional method that sends signal along the long signal line has some inconvenience from too long signal line length caused by huge volume of ship's engine. Power line modem can have short signal line from outlets to measuring instrument. Because it use exist power line for send signals, so it have low installation cost and could have good merits in job sites. Through this experiment, pressure in cylinder, engine rpm and etc. signals through PLM are well recognized at measuring instrument.

• Journal of Advanced Marine Engineering and Technology
• /
• 제37권2호
• /
• pp.183-191
• /
• 2013

SOLAS 선박표준 네트워크는 기계시스템 간 실시간 제어감시가 필요한 제어계측 네트워크와 운용자가 컴퓨터 모니터를 통하여 기계를 제어감시 하는 선박제어네트워크 및 외부와의 무선통신 네트워크로 구성되어 있다. 본 논문은 실시간 제어감시가 요구되는 제어계측네트워크로서 국제표준화 된 IEC 61162-3 (NMEA2000 네트워크)에 적합한 프로토콜 스택을 개발하고, 개발된 프로토콜 스택을 사용하여 기관실 모니터링시스템을 개발하였다. 개발된 기관실모니터링시스템을 NMEA에서 제공한 공식인증시험 툴을 사용하여 표준에서 요구하는 항목에 따라 약 1600여 가지의 인증시험과정을 통과하여 인증을 득하였으며 이에 관하여 기술한다.

• 한국군사과학기술학회지
• /
• 제21권4호
• /
• pp.429-436
• /
• 2018

The RCS value of maritime ship is indicator of ship's stealth performance and it should be particularly measured for navy ship to ensure survivability on the battlefield. In the design phase of the navy ship, a RCS prediction should be performed to reduce RCS value and achieve ROC(Required Operational Capability) of the ship through configuration control. In operational phase, the RCS value of the ship should be measured for verifying the designed value and obtaining tactical data to take action against enemy missile. During the measurement of RCS for the ship, ship motion can be affected by roll and pitch in accordance with sea state, which should be analyzed into threat elevation from view point of enemy missile. In this paper, we propose a method to measure and analyze RCS of ship in 3-dimensions using a ship motion measuring instrument and a fixed RCS measurement system. In order to verify the proposed method, we conducted a marine experiment using a test ship in sea environment and compared the measurement data with RCS prediction value which is carried by prediction SW($CornerStone^{TM}$) using CAD model of the ship.

• 동력기계공학회지
• /
• 제13권2호
• /
• pp.63-70
• /
• 2009

This paper discusses the influence on long-tenn predictions of the ship response in ocean by using the Global Wave Statistics data, GWS, and wave information from the remote sensing satellites. GWS's standard scatter diagrams of significant wave height and zero-crossing wave period are suggested to be corrected to a round number of 0.01/1000 fitted with a statistical analytic model of the conditional lognormal distribution for zero-crossing wave period. The GEOSAT satellite data are utilized which presented by I. R. Young and G. J. Holland (1996, named as GEOSAT data). At first, qualities of this data are investigated, and statistical characteristic trends are studied by means of applying known probability distribution functions. The wave height data of GEOSAT are compared to the data observed onboard merchant ships, the data observed by measure instrument installed on the ocean-going container ship and so on. To execute a long-tenn prediction of ship response, joint probability functions between wave height and wave period are introduced, therefore long-term statistical predictions are executed by using the functions.

• Journal of Advanced Marine Engineering and Technology
• /
• 제34권1호
• /
• pp.125-132
• /
• 2010

IEC61162-3 known as NMEA2000 protocol is approved as a standard network of SOLAS ship by ISO and used for the instrument network which exchanges data in real-time. For easy the development of ship network equipments, this study is focused on the development of SoC which can convert to NMEA2000 protocol from various kind of protocols such as TCP/IP, NMEA0183, RS422 and others using FPGA and u-Blaze. In this paper, we composed NMEA2000 protocol stack on FPGA and verified NMEA2000 network communication of FPGA system by connecting with commercialized devices through PC Hyper-terminal and network monitoring program.

• Journal of Advanced Marine Engineering and Technology
• /
• 제40권2호
• /
• pp.120-130
• /
• 2016

In general, a series of ship steering motions is composed of a combination of translational motions and rotational motions of the ship. In particular, a series of rotational motions frequently occurs in narrow areas such as ports and canal zones. In this paper, a method was suggested for composing an integrated control algorithm based on the jog dial as a command instrument for rotational motion control. In order to realize the rotational motions, several algorithms were suggested for generating rotational commands, for selecting motion variables, for choosing reference input values for the motion variables, for computing required accelerations and thrusts, and for allocating thrusts to actuators. A simulation program was compiled to execute simulations for three rotational motions. Finally, the effectiveness of the suggested method was verified by analyzing the simulation results.