• 수산해양교육연구
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• 제28권4호
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• pp.925-935
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• 2016

It is provided that seafarers qualified in accordance with STCW(International Convention on Standards of Training Certification and Watch-keeping for Seafarers) convention and code in safety training shall be required, every five years, to provide evidence of having maintained the required standard of competence, to undertake the tasks, duties and responsibilities listed in Chapter VI, section A-VI/1 of the STCW Code A. Every party to the STCW Convention has amended the relevant national regulations according to the above international convention and code. These amended Seaman's Act require the updating safety training which is only five years valid for existing seafarers serving onboard ship on international voyage. And above specified existing seafarers must, as of the 1st January 2017, have documentary evidence of either having completed the training course or updated their training within the last 5 years. In relation to the above international trend, the Korean Ministry of Oceans and Fisheries also has completed an amendment to its Seaman's Act. But, the Korean Seaman's Act has a supplementary provision to exempt the seafarers who have completed STCW advanced safety training from basic safety training. The purpose of this study is to define the problems of above mentioned exemption provisions and to make better policies for improvement. In order to complete the purpose, the research team has conducted an in-depth survey of various foreign cases on STCW safety training. Moreover, the team has suggested an improvement scheme in consonance with Korean shipping industry and society through out this report.

• 대한인간공학회지
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• 제30권1호
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• pp.251-257
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• 2011

When designing a ship, ergonomic considerations are crucial when minimizing a navigator's fatigue due to the burden of work, and to appropriately operate the navigational equipment for each given situation by helping the operator to understand the surroundings as well as the physical functions of the ship. However, insufficient consideration of ergonomic elements in the actual design of ship Bridges is lowering the performance of safe navigation and allows for the possibility of operation or readout errors. Consequently, these errors lead to an increase in maritime accidents. Therefore, this study conducted a usability evaluation on the importance of and the usage frequency of navigational equipment, their influence on actual navigation, and the possibility of error upon operation or readout between training ship officers, to derive an optimized layout that includes the consideration of ergonomic factors for on-Bridge navigational equipment, which are currently arranged differently according to their type or size. The optimized layout of on-Bridge navigational equipment was carried out based on the evaluation results, using the Lingo program. Through the process of optimization, revised layouts of on-Bridge navigational equipments(control and display device) were suggested, considering emergency situations(ship collision, stranding, fire and explosion, sinking, etc.) during navigation.

• 한국항해학회지
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• 제18권2호
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• pp.41-56
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• 1994

This paper was a part of the risk management in planning a channel. It utilized Korea Marine Training & Research Institutes(KMTRI) which Houses a real-time, full-mission shiphandling simulator to examine the safety of the ship's transit in the planned channel of Asan port. 6 competent Captains participated in this study. The vessel modelled was a 60,000-ton ship. The two variables(factors) examined were environ-mental conditions such as flood-and-ebb current condition and day-and-night condition. The two variables were combined to produce four experimental conditions. To evaluate the safety of the environmental conditions, two categories of performance measures were analyzed. They were vessel's proximity to channel boundary and vessel controalbility. The findings regar-ding the effects of environmental conditions were as follows : - Closest Point of Approach(CPA) to channel boundary was enough for 60,000-ton ship to transit th-rough the channel with 99.999% confidence level. - Closest Point of Approach(CPA) to channel boundary further was under against-current condition than under with-current condition. -Vessel controlability was better under against-current condition than under with-current condition. -Vessel controlability was better under inbound transit than under outbound transit.

• 수산해양기술연구
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• 제59권2호
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• pp.145-154
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• 2023

In this study, to control the heading angle of a ship, which is constantly subjected to various internal and external disturbances during the voyage, an LADRC (linear active disturbance rejection control) design that focuses more on improving the disturbance removal performance was proposed. The speed rate of change of the ship's heading angle due to the turn of the rudder angle was selected as a significant factor, and the nonlinear model of the ship's maneuvering equation, including the steering gear, was treated as a total disturbance. It is the similar process with an LADRC design for the first-order transfer function model. At this time, the gains of the controller included in LADRC and the gains of the extended state observer were tuned to RCGAs (real-coded genetic algorithms) to minimize the integral time-weighted absolute error as an evaluation function. The simulation was performed by applying the proposed GA-LADRC controller to the heading angle control of the Mariner class vessel. In particular, it was confirmed that the proposed controller satisfactorily maintains and follows the set course even when the disturbances such as nonlinearity, modelling error, uncertainty and noise of the measurement sensor are considered.

• 한국항만경제학회지
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• 제32권2호
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• pp.157-178
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• 2016

본 논문은 우리나라 최초로 선박관리산업의 시장규모를 추정하고 경영실태분석을 수행하여 환경변화에 대응하는 경영개선방안을 제시하였다. 최근 글로벌 해운선사들은 해운원가절감과 서비스의 제고를 위한 전문선박관리업체에 선박 선원관리 일체를 아웃소싱하는 추세이지만 우리나라 선박관리산업의 시장규모는 외항선사 매출규모의 3.75%에 지나지 않고 있어 시장규모 확대가 필요하다. 경영실태분석결과에 의하면, 우리나라 선박관리업체는 경영능력, 국제비지니스역량 및 마케팅 역량이 미흡하여 수익성이 매우 미흡한 편이다. 또한 규모의 영세성과 재무구조가 취약하여 전문적인 선박관리를 위해서는 국제화 및 대형화가 시급하다고 볼 수 있다. 이를 위해서는 정부는 선원의 노령화와 승선기피를 방지하기 위한 선원양성 및 지원정책과 더불어 금융지원과 세제지원이 필요한 것으로 사료되고 있다.

• 해양환경안전학회지
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• 제24권4호
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• pp.422-429
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• 2018

본 연구는 선박에서 발생할 수 있는 화재연기의 위험성을 인식시키고 비상대응능력을 향상시키기 위해 선내에 안전교육을 위한 환경을 구축하고 시나리오를 개발 운영하면서 획득한 실습생의 상황별 이동특성을 측정분석한 것으로, 그 결과를 정리하면 다음과 같다. 연기가 없는 조건에서는 익숙한 이동경로에 장애가 발생한 경우와 그렇지 않은 경우의 각 피난이동 상대속도 사이에 차이가 없지만, 실내에 연기가 충진되어 가시도가 매우 낮은 조건에서는 시야불량에 따른 이동능력 저하로 인해 그렇지 않은 경우에 비해 평균상당속도가 62.5 % 감속되었다. 시나리오에 관계없이 단순이동경로에 비해 복잡이동경로의 평균 상당속도가 빠르고 표준편차도 작게 나타났다. 연기가 충진된 경우에 대한 단순 데이터 평가에서는 전체이동경로와 복잡이동경로의 상대속도 확률분포가 매우 유사하였지만, 전체이동경로의 상대속도에 대한 복잡이동경로의 상대속도비율의 개인간 변동폭은 매우 컸다. 한편, 상당속도는 가시거리의 로그함수로 표현할 수 있었다. 또한 실습생의 긴장감이 증가하면서 모든 경로에서 상대속도가 빨라졌다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2007년도 추계학술대회 및 제23회 정기총회
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• pp.29-30
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• 2007

This paper deals with effect of wind forces and moment acting on the training ship SAE NUR/. The results of drift angle and counter rudder angle due to wind effect are calculated by using the static equilibrium method especially with nonlinear mathematical expression, and then the critical wind velocity is found out. The given results am be applied directly to T/S SAE NURI in handling under the wind condition and used for merchant ships as a referential tool.

• 한국항해항만학회지
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• 제32권2호
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• pp.115-120
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• 2008

This paper deals with effect of wind forces and moment acting on the training ship SAE NURI. The results of drift angle and counter rudder angle due to wind effect are calculated by using the static equilibrium method especially with nonlinear mathematical expression, and then the critical wind velocity is found out. The given results can be applied directly to T/S SAE NURI in handling under the wind condition and used for merchant ships as a referential tool.

• 해양환경안전학회지
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• 제19권6호
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• pp.649-657
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• 2013

본 연구에서는 위험물 취급자의 직무에 기반을 둔 국제해상위험물 전문교육 모델을 제안하고자 해외사례 검토를 통하여 직무별 교육과정 세분화 방안을 모색하고, 설문조사를 통하여 위험물 취급자들의 개선 요구사항을 분석하였다. 해외사례 검토 결과, 미국의 경우 위험물 취급자의 직무에 따른 다양한 교육과정이 운영되고 있었고, 영국에서는 위험물의 종류 및 운송수단에 따른 교육과정이 세분화되어 운영되고 있었으나, 국내에서는 다양한 직무에 종사하는 위험물 취급자에 대하여 동일한 교육과정을 적용하고 있는 것으로 조사되었다. 한편 설문조사 결과, 현 국내 교육과정의 효과가 높지 않고, 응답자들이 IMDG Code 교육의 확대 실시와 인터넷을 통한 정보의 제공을 주로 요구하고 있는 것으로 드러났다. 따라서 결론으로 육상의 위험물 취급자를 육상현장직, 육상사무직, 육상운송직의 세 가지 직군으로 분류한 후 각 직군의 특성에 맞는 교육 방안을 제시하였고, 또한 현 수도권에 집중된 교육 실시지역을 피교육자의 수요에 맞추어 권역별로 확대 실시할 것과 On-line 교육과정의 개설을 제안하였다.

• 수산해양기술연구
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• 제48권2호
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• pp.147-154
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• 2012

In head sea, a ship has mainly the longitudinal motion such as vertical acceleration and pitch. In that case, the motion characteristics of a ship will have changed as the location different from each of place vertically and horizontally on board. The author carried out an experiment about the ship's vertical acceleration and pitch according to the location for the head sea, and analyzed the data with the aid of the statistical and spectral analyzing method to get the motion characteristics of the vessels. The response of vertical acceleration and pitch not deeply depend on the decks vertically, but displayed the relative big different value horizontally even if same deck. The biggest response of vertical acceleration and pitch among the accommodations was shown at scientist room, but the value of it not reached to the minimum requirement of ISO 2631-1 for working on board.