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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society of Marine Environment & Safety
Journal Basic Information
Journal DOI :
The Korean Society of Marine Environment and safety
Editor in Chief :
Volume & Issues
Volume 19, Issue 6 - Dec 2013
Volume 19, Issue 5 - Oct 2013
Volume 19, Issue 4 - Aug 2013
Volume 19, Issue 3 - Jun 2013
Volume 19, Issue 2 - Apr 2013
Volume 19, Issue 1 - Feb 2013
Selecting the target year
Forecasting of Sea-Level Rise using a Semi-Empirical Method
Kim, Tae-Yun ; Cho, Kwang-Woo ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 1~8
DOI : 10.7837/kosomes.2013.19.1.001
In this paper, we predicted sea-level rise for RCP 4scenarios(RCP 2.6, RCP 4.5, RCP 6.0, RCP 8.5). To calculate sea-level rise, a semi-empirical method was used and it needs atmospheric temperature rise for each scenario. According to the results, the sea-level has been rising steadily in all scenarios. By 2050 the maximum difference of sea-level rise between the scenarios was within 0.08 m, but its difference was showed more than 0.5 m in 2100. The values of sea-level rise for RCP 2.6, RCP 4.5, RCP 6.0, RCP 8.5 scenarios are 0.87 m, 1.21 m, 1.02 m, 1.36 m, respectively. In the case of RCP 8.5, the slope of atmospheric temperature rise since 2060 was very steep compared to the other scenarios so that the maximum difference of sea-level rise between the scenarios will be much larger after 2100. Estimated by a simple approximation, the maximum difference of sea-level rise can be more than 1.2 m in 2120.
Growth and Production of Aulichthys japonicus in an Eelgrass (Zostera marina) Bed of Dongdae Bay, Korea
Kim, Ha-Won ; Huh, Sung-Hoi ; Kwak, Seok-Nam ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 9~16
DOI : 10.7837/kosomes.2013.19.1.009
The growth and production of Aulichthys japonicus (6.70~15.32 cm TL) were investigated in an eelgrass bed of Dongdae Bay, Korea throughout 2006. A total 888 A. japonicus were collected with a small beam trawl. Growth in fish total length was expressed by the von Bertalanffy`s growth equation as: $L_t
A Study for an Early Detection Method on Altering Course of a Target Ship using the Steering Wheel Signal
Jung, Chang-Hyun ; Hong, Tae-Ho ; Park, Gyei-Kark ; Park, Young-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 17~22
DOI : 10.7837/kosomes.2013.19.1.017
If we were in a head-on or crossing situation with a target ship and did not know the target ship`s intention to change her course, we might be confused about our decision making to change our course for collision avoidance and be in a danger of collision. In order to solve these problems, we need to develop an automatic system which enables mariners to easily detect a change in the target ship`s course and efficiently avoid being on a collision course. In this paper, we proposed an early detection method on altering course of a target ship using the steering wheel signal. This method will contribute to the reduction of collision accidents and also be used to the VTS system and the analysis of marine accidents.
The Effect of Captain`s Transformational Leadership on Job Satisfaction of KCG
Sin, Ho-Sig ; Youn, Dae-Gwun ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 23~30
DOI : 10.7837/kosomes.2013.19.1.023
The fleet crew of Korea Coast Guard(KCG) have a wide range of roles to perform. It is already recognized that they carry dutie in inferior working conditions. Therefore, a research on leadership that concerns organizational effectiveness seemed necessary for them. This study examines whether transformational leadership style is appropriate in job satisfaction for the fleet crew of KCG. This study also proves the effect of a leadership style on job satisfaction by suggesting a hypothesis from preceding studies. In this study transformational leadership is fixed as independent variables and job satisfaction as dependent variables and six factors as demographic characteristics. It is found that Intellectual stimulation is the most influential factor, but individualized consideration is an uninfluential factor concerning job satisfaction.
A Study on the Treatment of Toxic Chemicals of Maritime University Cadets
Im, Myeong-Hwan ; Sin, Ho-Sig ; Kim, Hong-Ryeol ; Lim, Geung-Su ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 31~36
DOI : 10.7837/kosomes.2013.19.1.031
Maritime University cadets must be on board ship`s after thoroughly completing a Basic Safety Training Course. During their spare semester they must complete basic principle of the course and then, attend to both Advanced Safety Training Course and Tankers Training Course before they graduate. However, all cadets are exposed to risks during their onboard training. It means that most of commercial ships have to train them before boarding and perform duties according to all sorts of check lists based on the ISM. Accordingly, this research will deal with the treatment for toxic chemicals which is not fully covered by shipping firms, vessels and even a Maritime University for cadets. The lack of pre-knowledge about it is considerably hazardous to the cadets who have no onboard experience. As stated above, the majority of the onboard cadets board their ships without previous training on treatment and knowledge for toxic chemicals. As a result, there are some cases that cadets are injured due to the lack of knowledge to treat toxic chemicals and due to carelessness. Furthermore, they end up leaving a ship prematurely. To prevent these incidents from occurring, this paper recommends thorough training before going onboard provided by Maritime University, the systematic database on the safety of the toxic chemicals and the development of the online contents for safety education of toxic chemicals fitted on each ship`s types are necessary to avoid risks and accidents onboard. Furthermore, it is suggested that shipping companies should manage the ship according to the safety check list on toxic chemicals and the crew in charge with qualification for the treatment of toxic chemicals should provide a safety education and supervision.
A Study on the Connector of Floating Platform based on Concrete Structures
Boldbaatar, Tumenjargal ; Yoon, Dae-Gwun ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 37~44
DOI : 10.7837/kosomes.2013.19.1.037
This study is about the connector of the floating platform in order to ensure safety due to various climate changes. The purpose of this study is to recommend the connector model of floating platform based on concrete structures after reviewing the literatures related in establishing floating structure in case of various climate changes in domestic coast. This study introduces the concept generation, existing model, detailed design and evaluation including current and future development of the technologies of marina floating platform connector based on concrete structures. The results from the research show that the analysed connector design (Rigid Pontoon Connector) provides a highly efficient and practical solution to facilitate connection of stable floating platform.
A Study on the Marine Civil Guard Officer to Enhance the Quality of Maritime Security Services
Jin, Seong-Ryong ; Lee, Eun-Bang ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 45~51
DOI : 10.7837/kosomes.2013.19.1.045
In order to facilitate the private maritime security system with high quality guard services, the status of private security companies and the security instructor system which has been operated in land side, are analyzed. Through screening the spectrums of private maritime security and analyzing the status of maritime security guard, the characteristics and expertise of maritime guard service, and it`s system need are elicited. we propose the system of marine civil guard officer who will play a major role in private maritime security domain, and design the job requirements, the subjects of qualification test and the education program to enhance his professionalism and practicality. Moreover, the enactment of a provision on marine guard company in Marine guard law will be the platform to develop a private maritime security industry and to strengthen international competitiveness through supervising and piloting private guard service at sea by Korea coast guard.
A Study on Economical Operation of a Ship`s Main Engine - The case of Training Ship SAENURI -
Kim, Hong-Ryeol ; Kim, Bu-Gi ; Rim, Geung-Su ; Kim, Deug-Bong ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 52~58
DOI : 10.7837/kosomes.2013.19.1.052
Operation Abstract : Operational cost required for navigating a ship may differ from according to type, scale, economic speed, navigation area and other factors. However, it is known that the fuel oil price ratio takes 50~60 %. It is the current trend because of the use of poor quality fuel and it is reviewed even for small to medium sized ships to save the operational costs due to the recent rise of international oil price. Furthermore, ocean carriers are taking action to low speed navigation as the alternative method of reducing fuel consumption. Hence, in this study, fuel consumption of main engine was measured by using actual operating ship data compared with sea speed at sea. It was suggested that the area of M/E`s load(70 %) lower than NCR is the optimal navigating condition through the relation between speed and fuel consumption compared with advance ratio together with the load.
Model Development of Aeration System using Small Wind Turbine
Kim, Myoung-Jun ; Chea, Gyu-Hoon ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 59~65
DOI : 10.7837/kosomes.2013.19.1.059
In recent years, the crisis of energy is growing seriously and also the contamination of ecology has been reverberated as international problem. The social concerns on energy crisis have been growing for the last several years and also the interests in new and renewable energy have been increased. Therefore, in order to solving these problems, as solution of one, this paper is investigated using the aeration system at the fish farm, etc from nature energy such as wind power. This study suggests the fundamental data of designing for these similar apparatus and examines the parameters of wind velocity and wind receiving area. Especially, the water outlet position was mainly investigated with optimum outlet angle of wind pump.
Harmonic and Torque Ripple Reduction of Electric Propulsion System using 12-Pulse Diode Rectifier by Auxiliary Supply
Kim, Jong-Su ; Seo, Dong-Hoan ; Choi, Jae-Hyuk ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 66~70
DOI : 10.7837/kosomes.2013.19.1.066
The input current of three phase rectifier which is mainly used in the propulsion system of the electric propulsion ship includes a variety of low order harmonics. To reduce these harmonics, the power conversion system, used in the large vessels which high power is required, is currently used the rectifiers of 12-pulse output, but it still has a problem that occurs
harmonics. Also, in the case of the direct torque control technique which is widely used for the speed and torque control, the torque ripple is severe and the input current of motor has greatly included harmonics by the switching of the inverter. In order to reduce harmonics and improve the performance of torque control, this paper presents that the auxiliary supply assisted into the 12-pulse rectifier of the electric propulsion system using direct torque control technique. We confirm the validity of the proposed method through the simulation under the environment of a real vessel system.
Design of HSE Management System in a Shipyard using object-oriented Component-Based Development Method
Oh, Hyun-Soo ; Chang, Seong-Rok ; Kim, Dong-Joon ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 71~77
DOI : 10.7837/kosomes.2013.19.1.071
Smart work has been gaining more popularity recently. Smart work means that employees perform their works anytime and anywhere as utilizing the information and communication technology. It can be divided into four categories; the mobile office, the home office, the work-at-center and the tele-cooperation. Among them, the mobile office based on tablet personal computers(PCs) or smart phones, employees can exchange information with tablet PCs or smart phones via mobile radio communication networks and portable terminals. Smart devices such as tablet PCs and smart phones help to access intranet system for requests, approvals, information search whenever employees need. This mobile office system for real-time HSE managing can contribute to improve the productivity and work efficiency in a shipyard. In this study, the main goal is to design the specialized mobile application for the HSE management system on the shipbuilding industry. The mobile application including 10 functions is designed based on ooCBD(object-oriented Component Based Development) methodology.
Wave-resistance Performance Analysis of the Twin Hull for a Type of the Asymmetric and Symmetric Mono Hull
Choi, Hee-Jong ; Park, Dong-Woo ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 78~84
DOI : 10.7837/kosomes.2013.19.1.078
The primary objective of the current work is to develop efficient numerical code to assess the resistance performance of the twin hull form. Resistance performance for the two different twin hull forms with asymmetric and symmetric mono hull using developed code are evaluated. Numerical calculations and model tests have been compared to validate a developed code used in the current work. Comparison were carried out through sinkages of the bow and stern, trim angle and wave-making resistance. Comparative analysis regarding hydrodynamic characteristic of different twin hull forms is worthy of application in the hull form development stage.
A Study on the Design of Tidal Current Farm in the Bunamgun-do
Yang, Chang-Jo ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 85~92
DOI : 10.7837/kosomes.2013.19.1.085
Many efforts will have to be made on securing the stable supply of the energy due to the worldwide trend of controlling the utilization fossil fuels inducing global climate change. Renewable portfolio standard enforced to power companies over 500 MW capacity from 2012. Tidal current energy is one of the most interesting renewable and clean energy resources that have been less exploited. Especially, Korea has worldwide outstanding tidal current energy resources and it is highly required to develop a tidal current energy conversion system(TECS) in coastal region. So, we examine a tidal in-stream energy using a numerical model and estimate a tidal current potential for commercialization of tidal current power plant in the sea of the Bunamgun-do. Available tidal energy resources is also analytically estimated using a tidal farm method and the annual energy production of an optimal TECS arrays will be calculated with taking into account interference of lateral and longitudinal spacing.
A Study on the Profits Return Ways for Promoting of the Marine and Water Sports in Korea
Park, Young-Soo ; Lee, Sang-Il ;
Journal of the Korean Society of Marine Environment & Safety, volume 19, issue 1, 2013, Pages 93~99
DOI : 10.7837/kosomes.2013.19.1.093
It is expected to continue to increase the number of people who enjoy marine and water sports due to the increase of leisure time because of income increase, the five-day workweek, etc. However, in the safety awareness, the development of equipment is just in the early stage. Established system for fundraising is required for Korean marine and water sports to be developed first. Should the fund be spent on the safety and development of domestic equipment for marine and water sports, it would make for a safer and more enjoyable sports for the people. The profit return measures of motor boat race, among marine and water sports, are surveyed and analyzed to suggest the measures stated above. Japanese legal structure and the profit return measures on motor boat race, which are about 60 years ahead than Korean systems, were analyzed and led to suggest the establishment of professional institutions which promote motor boat, etc. and the legal improvement for funding.