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.

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