• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.1
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• pp.56-66
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• 2017

This paper investigates university-level curriculum by comparing education systems among maritime universities, fishery universities and naval academy. It was found that maritime university programs are full of effective courses related to the concept of Sea Power along with the duties of maritime officers. It is recommended that more interest be paid to on the increase of national sea power by renovating current educational systems and adding more national supports by providing additional maritime policies to establish sustainable development goals for Sea Power.

• Journal of the Society of Naval Architects of Korea
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• v.45 no.3
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• pp.329-336
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• 2008

Basic performances of wireless sensor network (WSN) and power line communication (PLC) confirmed in the test bed ashore are investigated in the 3000-ton class training ship of Korea Maritime University. The ubiquitous technologies can be considered for the provision of safety and convenience in a ship. We employed WSN and PLC, as the ubiquitous technologies, at the two areas within the training ship to estimate the realization of the ubiquitous environments in a ship. The experiments show rather good results in terms of data transfer rate. However, more detailed studies concerning the connection between WSN and PLC, noises induced to power line and fading effects are required to improve the quality and the stability of the communication for the ubiquitous environments.

• International Journal of Naval Architecture and Ocean Engineering
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• v.9 no.1
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• pp.77-99
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• 2017

Offshore oscillating water columns (OWC) represent one of the most promising forms of wave energy converters. The hydrodynamic performance of such converters heavily depends on their interactions with ocean waves; therefore, understanding these interactions is essential. In this paper, a fully nonlinear 2D computational fluid dynamics (CFD) model based on RANS equations and VOF surface capturing scheme is implemented to carry out wave energy balance analyses for an offshore OWC. The numerical model is well validated against published physical measurements including; chamber differential air pressure, chamber water level oscillation and vertical velocity, overall wave energy extraction efficiency, reflected and transmitted waves, velocity and vorticity fields (PIV measurements). Following the successful validation work, an extensive campaign of numerical tests is performed to quantify the relevance of three design parameters, namely incoming wavelength, wave height and turbine damping to the device hydrodynamic performance and wave energy conversion process. All of the three investigated parameters show important effects on the wave-pneumatic energy conversion chain. In addition, the flow field around the chamber's front wall indicates areas of energy losses by stronger vortices generation than the rear wall.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.213-216
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• 2005

The distress communication system in the maritime mobile service had almost depended on the wireless telephony or telegraphy technique. The GMDSS (Global Maritime Distress and Safety System) which was introduced in 1992 brought a lot of changes in the maritime distress communication service such as the automatic transmission of distress signals and implementation of global search and rescue networks. However, there are some deficiencies in the GMDSS distress communication system such as a lack of compatibility in the maritime distress communication between GMDSS ships and Non-GMDSS ships, increasing deceptive or false distress alerts generated by GMDSS installations, lack of understanding about the GMDSS installations for the operators. In this paper, the problems of distress communication system in the maritime mobile service are analyzed and the methods to solve or minimize these problems are suggested.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1999.10a
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• pp.153-161
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• 1999

For composing the structure model of national maritime power system by system structural modelling, in this study, the 50 basic factors are selected by survey of the extensive and thorough literatures on maritime, sea, maritime power and sea power. And the basic factors are classified into 36 component factors by cluster method. The 9 attributes are extracted by the application of the principle component analysis method, one of the factor analysis method in system engineering, to component factors. We defined the attributes composing the national maritime power system by integration the result of this study and existed our studies relate to this topic. Which are showed in table 8. and we showed the structure model of national maritime power system in figure 3. In table 8, the 9 attributes are as follows: the fundamental power of maritime, shipping and port power, naval power, fishing power, shipbuilding power, the power of ocean research and development, dependency on seaborne trade, the protection power of ocean environment and the will and inclination of government.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2006.06b
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• pp.105-111
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• 2006

In the IMO COMSAR 10th meeting, the SOLAS performance standard draft for Long-range Identification and Tracking(LRIT) was submitted to MSC. '81 meeting for its approval. The LRIT and AIS would provide an important data in monitoring SOLAS vessels at shore. This paper aims to suggest the vision and future directions for a successful E-navigation development in co-orporation with vessel monitoring.

• Journal of Korea Ship Safrty Technology Authority
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• s.28
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• pp.36-45
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• 2010

While the vessel become bigger and high speed, navigational passages become narrow due to an enlargement of all sorts of new ports, sea-crossing bridges and anchorages, leading to the high probability of marine accidents. Furthermore, a constant increase in the maritime transportation and the traffic volume on the sea led to a variety of sea traffic environments and it is a trend for the demand for the sea transportation environment to increase steadily. At this point of time, the Ministry of Land, Transport, and Maritime Affairs introduced the Korea Maritime Safety Laws evaluating the degree that The Safety Audit System for maritime transport, which evaluates the degree that all kinds of port facilities installed temporarily or installed into navigational passages, and the installations and repair constructions of S.O.C. facilities affect ships' traffic safety, was introduced through Korea Maritime Safety Laws and went into effect from November 28th, 2009. This study was performed to introduce an outline including the concept and purpose of the Maritime Safety Audit(MSA) system for maritime transport and the technological guidelines for scientific and standardized enforcement, thereby analyzing the system.

• Journal of Fisheries and Marine Sciences Education
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• v.23 no.4
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• pp.779-785
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• 2011

In order to improve the employment rate of graduates in maritime and fisheries universities, we investigated the employment situations of the those graduates for the last 7 years. The results were as follows, The ratio of graduates in maritime and fisheries universities to total graduates of on-board departments are 69.1% and 30.9% respectively. The on-board employment rate of maritime universities and fisheries universities graduates are 63.2% and 26.7% respectively. Nearly all of the maritime universities students were employed to merchant ship and fisheries universities students were employed to merchant ship 77.2% and only 22.8% of them got a job on fisheries ship. The ratio of getting a job in maritime universities to ocean-going ship was 76.7%, that was the highest ratio and the ratio of fisheries universities got a job to ocean-going ship was 55.1%. The on-board career of maritime universities graduates was 1~5 years, which took 86.4% of all careers and that of fisheries universities was less than 1 year, which took 60.0% of all careers. We should make the various efforts to improve the employment rate of getting job to fisheries ship in the fisheries university gradustes.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.238-239
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• 2019

Cyber attacks can be caused by all equipment that perform communication functions, and the link between ship and land due to the development of communication technology means that the ship sector as well as the land sector can be easily exposed to cyber threat vulnerability. In this paper, we analyze cyber threat trend changes to identify cyber security vulnerabilities in the maritime sector and propose measures to enhance cyber security through other industry case studies.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.3
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• pp.320-327
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• 2019

The purpose of this paper is to compare seafarers' behavior according to traffic conditions of a road and an onshore locations. Behaviors are classified into three categories: Skill-, Rule- and knowledge-based mode. Experimental data were collected using the questionnaires for navigators, working in a merchant ship. To compare the behaviors, we used the four analysis method; the degree of frequency, reliability test, correlation and linear regression. As a result of the study, it was found that Skill-based behavior shows more higher in the road traffic than the maritime traffic, and rule-based behavior shows more higher in the maritime traffic than the road traffic. Also, the behavior in the navigation situation showed statistical significance. Especially, in the case of Rule-based behavior, a high correlation between road and maritime was found. This study can be expected to apply to complementary system utilization between error management system of onshore and maritime traffic.