간행물
Journal of Korean Navigation and Port Reserch KCI 등재 한국항해항만학회지
- 발행기관 한국항해항만학회
- 자료유형 학술지
- 간기 격월간
- ISSN 1598-5725 (Print)2093-8470 (Online)
- 수록기간 1977 ~ 2020
- 주제분류 농수해양 > 해상운송학 농수해양 분류의 다른 간행물
- 십진분류KDC 559DDC 629
권호리스트/논문검색
Vol.14 No.3 (1990년 9월) 5건
1.
1990.09
서비스 종료(열람 제한)
2.
1990.09
서비스 종료(열람 제한)
In recent years, propellers with various blade configurations such as highly skewed propellers are often fitted to ships from the viewpoint of reduction of vibration and noise. In the design of such propellers, design charts based on methodical series tests are to be complemented by theoretical calculations for accurate estimation of propeller open-water characteristics. The author intended to develop a method to estimate propeller open-water characteristics based on Quasi -Vortex - Lattice Method originally developed by Lan for solving planar thin wings, The Quasi - Vortex - Lattice Method has the simplicity and flexibility of Vortex - Lattice Method. Its accuracy is comparable to that of the Vortex - Lattice Method. Converged solution can be obtained with a small number of control points and further, leading edge suction force can be calculated directly. In the present paper, a numerical method to estimate propeller open-water characteristics based on the Quasi - Vortex - Lattice Method is reviewed and its application to marine propellers is described in detail. Comparison of propeller open-water characteristics obtained by the present method with experimental data showed good agreement for a wide variety of propellers including highly skewed propellers.
3.
1990.09
서비스 종료(열람 제한)
4.
1990.09
서비스 종료(열람 제한)
Students of the Mogpo Merchant Marine College must complete one year's shipboard training course according to IMO(International Maritime Organization) regulations as an obtaining matter of Certificate of Competency. The purpose of this shipboard training course lies int he student's acquiring practical knowledge and sill as a part of a course of study and, in the future, fostering essential adaptability and leadership, especially in bad circumstances on the sea. The shipboard training course has two kind that the students can be trained either on the training ship or on a merchant ship of the shipping company. In this paper, I only thought over the legal status of apprentice officers on the merchant ship and analyzed the problems practicably during shipboard training. This paper is made up of five chapters. The first chapter contains the purpose contents and method of this study, in the second, the meaning of shipboard practice education and training, in the third, the legal status of apprentice officers on merchant ship, in the fourth, the analysis of the provisions of the seamen act applied to apprentice officers on a merchant ship. And in the last chapter 5, the contents mentioned is summarized and directions are presented to amend the provisions of the seamen act applied to apprentice officers. The conclusions are as follows. 1.In case of shipboard training on overseas employment ship, the seamen act applied to the manning agent employing the apprentice officers should be reinforced. 2. The provisions of disembarkation in mid course by discipline of the seamen acts Article 24 should be relaxed. And the provisions in relations to seamen's duty to be a reason of discipline applied to apprentice officer among the provisions for ship's public order maintenance should be abolished. 3. The provision of repartriation completely should be applied to apprentice officers and the provisions of a journey expenditure during their embarkation or disembarkation have to be established. 4. The apprentice officers in shipboard training also need securing a basic wages provision to be criterion of an accident compensation. 5. The apprentice officers in shipboard training should not be in charge of third officer's or third engineer' study.
5.
1990.09
서비스 종료(열람 제한)
