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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 20, Issue 6 - Dec 2014
Volume 20, Issue 5 - Oct 2014
Volume 20, Issue 4 - Aug 2014
Volume 20, Issue 3 - Jun 2014
Volume 20, Issue 2 - Apr 2014
Volume 20, Issue 1 - Feb 2014
Selecting the target year
Growth Response of the Dinoflagellate Akashiwo sanguinea in Relation to Temperature, Salinity and Irradiance, and its Advantage in Species Succession
Kwon, Hyeong-Kyu ; Oh, Seok-Jin ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 1~10
DOI : 10.7837/kosomes.2014.20.1.001
The effects of temperature, salinity and irradiance on the growth of the dinoflagellate Akashiwo sanguinea isolated from Jaran Bay were examined in the laboratory. Maximum specific growth rate(
) was observed with combination of
and 30 psu. Optimal growth (
of maximum specific growth rate) was obtained at
with salinities of 15~35 psu. This results indicated that A. sanguinea is a stenothermal of the high water temperature and euryhaline species. The irradiance-growth curve was described as
. The compensation photon flux density (
) and half-saturation photon flux density (
, respectively. In conclustion, A. sanguinea has advantage physiological characteristics for the species succession at the coastal areas in summer with sufficient irradiance, high water temperature and large salinity gradient.
Hydraulic Model Experimental Study on the Rope Kink Phenomena and Mooring Block Behavior under Wave Conditions at a Seaweed Farm
Kim, Heon-Tae ; Choi, Jin-Hyu ; Yoon, Han-Sam ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 11~17
DOI : 10.7837/kosomes.2014.20.1.011
In this study, a hydraulic model experiment under wave conditions was carried out to investigate the gap/distance between two near-unit farm lines that affects the rope kink and shape variation of a seaweed farm during mooring block movement. As a result, rope kink occurred during the low wave height condition as the gap/distance between the two near-unit farm lines decreased. The seaweed farm maintained a stable shape in the higher wave height conditions as the gap/distance between the two near-unit farm lines increased. This result indicates that rope kink is sensitively affected by the gap/distance between the two near-unit farm lines. A tendency to increase the critical wave height was observed when mooring block movement occurred, and as the mooring block weight and wave period increased. From the experimental results in which incident wave conditions and the mooring block weight changed, as the front side mooring block weight increased from 3.0 to 8.0 tons, the seaweed farm was stable, and rear side mooring block movement hardly occurred. The observed tension of the seaside mooring line was a maximum at about 3.0 ton/m.
A Study on the Requirement to the Fishing Vessel for Reducing the Collision Accidents
Jung, Chang-Hyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 18~25
DOI : 10.7837/kosomes.2014.20.1.018
In spite of being reduced the numbers of vessel registered, there are increasing the numbers of total marine accidents and collision accidents. For recent 5 years from 2008 to 2012, it was analyzed that the collision accident is highest rank by 37 % among the marine accidents and the fishing vessel is highest by 58 % in these collision accidents and also the small fishing boat under 20tons is highest by 26 % on them. Over the half of the collision accidents by 56 %, they couldn't find each other to just before the collision situation. In this result, it was known that collision accidents almost to be occurred by the poor look-out in each other. Therefore, it was suggested the requirements to the fishing vessels in a side of crew, education and exercise, and navigation equipments to reduce the collision accidents by examining the navigation patterns and concerning laws of them.
Regulation and Its Tasks of Privately Contracted Armed Security Personnel on Board Ships Against Somali-based Piracy
Keum, Jong-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 26~32
DOI : 10.7837/kosomes.2014.20.1.026
The increased threat to commercial shipping by Somalia-based pirates has triggered an increased use of PMSC(Private Maritime Security Contractors). The use of PMSC to protect merchant ships against Somali-based piracy threat seems to have been most effective counter-piracy measures. However, there are various legal and practical questions around using PMSC and PCASP(Privately Contracted Armed Security Personnel) on board at sea. This paper aims to study the regulation and its problems of PMSC and PCASP on board to protect merchant ships against Somali-based piracy in the Indian Ocean and Gulf of Aden. In particular, this paper focuses on the legal issues including jurisdictional issues of PCASP on board merchant vessels, use of force by PCASP in self-defense, and authority for using PMSC. Currently, the legal framework relating to use of PMSC and PCASP on board protecting ships from Somali-based piracy is complex, sometimes ambiguous or inconsistent, and currently in a state of flux. Thus, this paper concludes that at this juncture an effort to coordinate this legal framework is necessary, as regards both the interpretation of existing rules related to PCASP on board merchant ships under UNCLOS(United Nations Convention on the Law of the Sea) and the creation of new rules. Also, this paper suggested that there is an urgent need to establish the PMSC-specific laws in Korea.
A Prediction of Marine Traffic Volume using Artificial Neural Network and Time Series Analysis
Yoo, Sang-Lok ; Kim, Jong-Su ; Jeong, Jung-Sik ; Jeong, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 33~41
DOI : 10.7837/kosomes.2014.20.1.033
Unlike the existing regression analysis, this study anticipated future marine traffic volume using time series analysis and artificial neural network model. Especially, it tried to anticipate future marine traffic volume by applying predictive value through time series analysis on artificial neural network model as an additional input variable. This study used monthly observed values of Incheon port from 1996 to 2013. In order for the verification of the forecasting of the model, value for 2013 is anticipated from the built model with observed values from 1996 to 2012 and a proper model is decided by comparing with the actual observed values. Marine traffic volume of Incheon port showed more traffic than average for May and November by 5.9 % and 4.5 % respectably, and January and August showed less traffic than average by 8.6 % and 4.7 % in 2015. Thus, it is found that Incheon port has difference in monthly traffic volume according to the season. This study can be utilized as a basis to reflect the characteristics of traffic according to the season when investigating marine traffic field observation.
A Study on the Sea-sickness Susceptibility of Seafarer at the Wheel House and Engine Room
Kim, Deug-Bong ; Kim, Bu-Gi ; Rim, Geung-Su ; Kim, Hong-Ryoel ; Kim, Chang-Su ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 42~48
DOI : 10.7837/kosomes.2014.20.1.042
Seasickness not only makes persons on board vessels to vomit but also causes vertigo, headache, sleepiness, fatigue, lethargy and other discomforts. This ailment leads to disturbance of biorhythm and decline of perception which would eventually cause reduction of situational awareness among ship's operators that leads to marine accident. This study is about the sensitivity of people onboard ships to seasickness and focused on deck or navigation officer cadets(apprentice officers) and engine officer cadets(apprentice engineers) who have no previous experiences on board. It is conducted by using motion sensor that can measure ship's X, Y, Z-axis motions and through the questionnaire survey, and evaluated each students' degree of seasickness symptoms. Through this study, in same circumstance, we have known that there are different degrees of motion sickness for wheel house worker and engine room worker, It also confirmed that seasickness have high relationship with degree of hull motion and also, with cycle of hull motion. In addition, we have confirmed that Z-axis hull movement has higher relationship with seasickness than X-axis and Y-axis hull movements. This study aims to initiate additional researches about X-axis and Y-axis of the ship's motion which it expects to greatly enhance safety of wheelhouse and engine room personnel, ship's livability and comfortable sailing.
A Study on the Law Enforcement of Korea Coast Guard against the Illegal Chinese Fishing Vessels
Lim, Chae-Hyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 49~58
DOI : 10.7837/kosomes.2014.20.1.049
The illegal fishery act committed Chinese fishing vessels have not been stopped and Korea Coast Guard(KCG) has been injured or killed by chinese fishing forces, even though the Korean Government has been trying to control the illegal fishery and repeated violent act committed by Chinese fishing vessels in our Exclusive Economic Zone. Moreover, some problems in relation to the control process of KCG to suppress the illegal foreign fishing vessels has been exposed in spite of extensive efforts of Korean Government. Improper law enforcement of KCG in relation to foreign fishing vessels would cause international dispute between related states, although the control process to the illegal fishing vessels at sea is in a way of due law enforcement process forming a State's power. To this end, this paper examines the problems raised during the control process which is including the visit and inspection of illegal Chinese fishing vessels and law enforcement process exercised by KCG and presents practical solutions through analyzing the related materials, professional's opinion and recent cases.
The Significance and Implications of Establishing Marine Economic Development Pilot Zones in the Viewpoint of China's Marine Industry Policy
Liang, Yin-Jing ; Choi, Sung-Doo ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 59~70
DOI : 10.7837/kosomes.2014.20.1.059
In recent years, Chinese government established 4 pilot zones at Shandong, Zhejiang, Guangdong, Fujian. The national marine development pilot zones policy is formed in order to promote development of Chinese marine economy, as if Chinese government selected 4 special economic zones as the policy experiment areas for economic structural reform at the beginning stage of reform and opening-up. This article utilizes the policy-making theory of Incrementalism Model and aims at searching for the essence, historical formation process, implementation state, implications of 4 Chinese marine economic development pilot zones policy. Moreover, the prospect of their future development is analyzed. The marine pilot zone policy has the following features: new development model with advanced industries and sciences & technology, highly civil participation, plural policy goals. These research results would be able to contribute not only to getting better understanding of China's marine industry policy, but also to drawing lessons for the construction of Korea's marine economic special zone in the viewpoint of policy transfer.
Regulatory Pathways for Siting and Permitting Offshore Wind Facilities
Yang, Hyoung-Seon ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 71~77
DOI : 10.7837/kosomes.2014.20.1.071
According to the increasement of demand for energy around globe, the concern degree of advanced countries for ocean energy including offshore wind power becomes excited. In domestic case, the government set up a goal that jumps up to the third ranked powerful nation of offshore wind in the world until 2020 and announced "The plan for 2.5-gigawatt wind farm off the south-west coast by 2019". Also the legal basis was created in order to support development of offshore wind power as 'A law on development, use, supply and promotion for New energy and renewable energy' was established by law. However to promote offshore wind power projects, there are much difficulties that developers should be applied by permitting use of public water surface and regulations of several domestic public institution. Therefore in this paper, we suggested an alternative to promote efficient offshore wind power projects by comparative analysis between domestic and foreign on regulatory pathways for siting and permitting offshore wind facilities.
Effects of Opening Condition of the Fore Body on the Resistance and Self-Propulsion Performance of a Ship
Park, Dong-Woo ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 78~85
DOI : 10.7837/kosomes.2014.20.1.078
LNG-RV has the additional equipments that enable to re-gastify liquefied LNG in LNG carrier. This vessel has Submerged Turret Loading(STL) system which transports gas through submarine terminal. When LNG-RV is operating at sea, the opening condition is formed by detaching STL equipment from a vessel. The primary objective of the current work is to estimate accurate speed loss for the opening condition of the LNG-RV employing numerical calculations and model tests. In the model tests, resistance and self-propulsion tests are carried out for the bare-hull and the opening condition without STL. In addition to these, flow visualization utilizing tuft is used to make the flow patterns visible, in order to get a qualitative or quantitative information for inner part in case of detaching the STL.
A Study on Simulation based Manufacturing in Shipyards : Focused on a Long-term Plan Verification
Lee, Dong-Kun ; Oh, Dae-Kyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 86~95
DOI : 10.7837/kosomes.2014.20.1.086
Productivity improvement of a shipbuilding company depends on how efficiently its limited resources are managed and utilized. Recently, research on modeling and simulation (M&S) to support shipyard production management system has been being under study. The production management based on M&S rejects decision making on experience, and it can establish productivity improvement method based on quantitative and specific data. In this paper, M&S is applied to the long-term plan as a part of the production planning in shipyards. To this end, the long-term plan processes and related management systems are analyzed. Based on the analysis, a simulation model and an application system using commercial simulation software are suggested. And basic structure of the suggested system is based on web technology such as Rich Internet Application, web services protocol for compatibility with existing shipyard enterprise systems. Utilizing the results of this study, it is expected that shipyard production planners can settle down work flow, in which one can establishes the production plan, simulates the plan, and analyzes the results, enabling a more reliable production plans.
The Flow Behavior Characteristics of Methane with Phase Change at Low Heat Flux
Choi, Bu-Hong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 96~103
DOI : 10.7837/kosomes.2014.20.1.096
A liquefied natural gas(LNG) in cryogenic liquid is converted back into gaseous form for distribution to residential and industrial consumers. In this re-gasification process, LNG supplies a plenty of cold thermal energy about
. The LNG cold thermal energy is utilized for the re-liquefaction process of cryogenic fluids such as Nitrogen, Hydrogen and Helium, and ice manufacturing process and air-conditioning system in some advanced countries. Therefore, it is also necessary to establish the recovery systems of the LNG cold thermal energy around Incheon, Pyungtaek and Tongyung LNG import terminals in our country. Methane is used as working fluid in this paper, which is the major component of LNG over 85 % by volume, in order to investigate the flow behavior characteristics of LNG with phase change at low heat flux. This paper presents the effects of pipe diameters, pipe inclinations and saturation pressures on the flow boundaries of methane flowing in a cryogenic heat exchanger tube, together with those of nitrogen, propane, R11 and R134a. The outcomes obtained from this theoretical researches are also compared with previous experimental data. It was also found that the effect of pipe inclination on the methane flow boundaries was significant.
Design and Performance Evaluation of a 10kW Scale Counter-Rotating Wind Turbine Rotor
Hoang, Anh Dung ; Yang, Chang-Jo ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 104~112
DOI : 10.7837/kosomes.2014.20.1.104
The counter-rotating approach on wind turbine has been recently put in interest for its certain advantages in both design and performance. This paper introduces a study on a counter-rotating wind turbine designed and modeled using NREL airfoils S822 and S823. The aims of the study is to evaluate and discover the performance of the counter-rotating system, and compares to that of single rotor turbine of same design using numerical simulation. The results show higher performance of the counter-rotating system compared with single rotor case at TSR 3 to 5 but lower performance at higher TSR. This is due to the interaction between upstream and downstream rotors. Thus, the counter-rotating turbine is more efficient at low rotor rotational speed.
Initial System for Automation of PDQ-based Shape Quality Verification of Naval Ship Product Model
Oh, Dae-Kyun ; Hwang, In-Hyuck ; Ryu, Cheol-Ho ; Lee, Dong-Kun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 1, 2014, Pages 113~119
DOI : 10.7837/kosomes.2014.20.1.113
Recently, R.O.K. Navy is increasing re-usability of design data and application of M&S(Modeling and Simulation) through the establishment of collaborative product development environment focused on Naval Ship Product Model(NSPM). As a result, the reliability of the result of design is getting better, and furthermore, a study to improve quality of construction through simulation of production/operation is in progress. Accordingly, the database construction of design data and the DB(Database) quality become important, but there was not research related to those or it was just initial state. This paper conducted research about system of the quality verification process of shape elements which compose NSPM based on the quality verification guideline of NSPM as the result of the precedent study. The hull surface was limited as verification object. The study to verify two things that application of basic drawing by the cad model of hull surface, and whether there is error in the geometric quality of cad model was progressed. To achieve this goal, the verification criteria and algorithm were defined and the prototype system which is based on was developed.