• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.29 no.1
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• pp.125-129
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• 2005

This study aims to provide divers with improved safe diving practices by analyzing reports on scuba diving casualties that recently(from 1997-2003)occurred in Korea, Japan and USA. The result of this study can contribute toward preventing the diving accident. All the data were collected through the diving accident reports of various sourse, which include KUA(Korea Underwater Association) technical committee, the accident statistical data of National Maritime Police Agency, articles of domestic and foreign scuba diving magazine, accident reports of various newspaper, annual report on decompression illness and diving fatalities by DAN(Diver Alert Network), various type of data on diving accident from local as well as national seminars, and medical treatment data of diving accident.

• Journal of the Korea Society of Computer and Information
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• v.24 no.5
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• pp.131-137
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• 2019

This study was aimed to identify a study on risk perception and safety knowledge and awareness of scuba diver. In order to achieve this purpose, a total of 310 customers over the age of 20 were selected as study participants form diving pools and dive resort in Seoul, Gyeonggi, Gangwon, Gyeongsang area using the convenience sampling method. However, only data from 295 customers were used after screening the data for reliability. The instrument for data collection was a questionnaire, and descriptive statistics, inter-item consistency reliability, t-test, ANOVA, post hoc test, correlation analysis, pearson chi-square test were conducted on the data using the SPSS 21.0 version statistical package program. The followings are the results: First, risk perception differs significantly according to age, education level, occupation and participation period. Second, participation period and safety knowledge have positive correlation.

• The Korean Journal of Emergency Medical Services
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• v.19 no.1
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• pp.35-49
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• 2015

Purpose: This study aimed to identify the current status and correlations among scuba divers' knowledge of safety, compliance with safety rules, and ability to cope with emergency situations. Methods: There were 317 study subjects. Data were collected between September 21, 2012 and September 7, 2013, and analyzed using SPSS software version 21.0. Results: Of the participants, 89.3% wanted to be educated in emergency care, while 69.4% indicated that preparedness in emergency situations for divers is insufficient. 78.5% suggested a need to creat a legal standard for the prevention of accidents. The average scores among the participants showed 3.22 points for knowledge of safety, 3.09 points for compliance with safety rules, and 2.91 points for ability to cope with accidents and emergency situations, with strong correlation among them. The lower license level they had, the lower score they indicated. Conclusion: We suggest there is a need to strengthen systematic educations on knowledge of safety, compliance with safety rules, and the ability to cope with emergency situations and emergency care at the open water level. In addition, there is a need to creat legal standards to consolidate the effects of these changes.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.176-183
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• 2020

A ship has three types of diving systems (Diver Stage Diving, Wet Bell Diving and Scuba Diving) to carry out a search-and-rescue operation. To reduce the possibility of decompression sickness, any diving systems shall comply with the decompression procedure according to the decompression table corresponding to the diving depth and diving time. The decompression procedure is largely divided into two methods: underwater decompression and underwater-onboard decompression. In particular, the surface interval shall not exceed 5 minutes, which is the phase from underwater decompression to underwater-onboard decompression, in accordance with the U.S Navy Diving Manual. However, the surface interval is greater than 5 minutes as a result of using Wet Bell Diving. This paper describes the result of cause analysis and measurement with improved Wet Bell Diving. Using improved Wet Bell Diving reduced the surface interval to less than 5 minutes. The result of the research can be used for operation and improving the performance of diving systems.

• Journal of the Korean Society of Safety
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• v.26 no.2
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• pp.42-47
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• 2011

Going underwater is supposed to begin with the history of human beings. At first it was confined to relatively shallow level, less than several meters by holding breath. Recently, deep level diving has been necessary for such purpose as construction, maritime salvage, military operations, research and sports by using SCUBA(self-contained underwater breathing apparatus) equipment. As one goes down into water, the pressure on the diver is increased due to water pressure with depth, usually 1 atm for each 10 m water level. In deep water, mixed gas or nitrox(EAN, enriched air nitrox) could be applied for the divers lest they should get disease due to high pressure. Of these, the former is usually composed of oxygen and inert gas like helium or hydrogen, the latter contains higher oxygen content than that in normal air in which the oxygen concentration is designated by the character "EAN" followed by vol. % of oxygen, for example, "EAN 40" contains 40% of oxygen. In this case, a victim was found at the 39 m below the sea surface breathing air and nitrox in cylinder wrongly marked as EAN 36, which was analyzed to contain 63% of oxygen by GC/TCD. The cause of death could not be exactly related with the oxygen content in the nitrox cylinder, because the accurate depth for the victim to dive was not known, even though the victim was just found at the depth of 39 m. However, the wrongly marked nitrox could be believed to be the main cause of the death at the depth unless there happened any other accident except that during diving.

• Journal of the Korea Society of Computer and Information
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• v.28 no.5
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• pp.121-127
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• 2023

This study aimed to find out the difference in safety knowledge, ability for coping with emergency situations, and first aid awareness before and after introductory scuba diving training. From June 25 to August 30, 2021, data were collected from 86 people who agreed to the study and received introductory education from SSI (Scuba Schools International). Data analysis was analyzed by descriptive statistics, t-test, and χ²-test using SPSS PC/26.0. As a result of the study, safety knowledge and ability to cope with emergency situations after training showed a statistically significant increase in all items, and first aid awareness increased after training in response to the items to be performed first according to the priority of the frequency analysis result. In addition, it was analyzed that the subjects who were well aware of the scuba diving safety rules had a statistically significantly higher safety knowledge and ability to cope with emergency situations. Therefore, considering the characteristics of scuba diving group education of college students, in order to participate in safe aquatic leisure activities, systematic education and institutional arrangements for safety knowledge and emergency response skills should be prepared from the introductory stage.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4403-4410
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• 2011

The purpose of this study was to investigate on the safety knowledge level, and to identify the factors that affect the safety knowledge according to general characteristics of scuba divers. This research design was a descriptive study. Data of 179 scuba divers were collected from October 17, 2010 to June 17, 2011. Data were analyzed by SPSS PASW statistics 18.0 program. The mean score of safety knowledge related to diving was 2.07(${\pm}0.54$)(score range was 1~4). The highest score was safety knowledge to cope with the cold($2.42{\pm}0.64$점). The lowest score was safety knowledge for hyperexpansion of lungs. In the results of multivariate regression analysis after variable selection, Adjusted $R^2$ value was 0.567. The model fit was 56.7%. The factors that affect the safety knowledge were age(${\leqq}29$ years), equipment(all purchase, some lease), motivation(job), participation period(${\leqq}11$ months) and frequency(once a month)(p<.05, p<.001). It is necessary to develop and conduct the educational program for scuba divers safety at country level.

• Proceedings of the KIEE Conference
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• summer
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• pp.597-601
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• 2004

HVDC(High Voltage Direct Current) is an underwater cable between Jeju Island and Haenam in main land and supplies approximately $50\%$ of electrical usage in Jeju Island. If there is any power failure due to HVDC, it will cost approximately 50,000 US dollars per day including Thermal Electrical Generation. Therefore it is absolutely necessary to recover the problem in rapid timely basis. Present survey method in Korea is done by scuba diver with air cylinder resulting very poor visual inspection. Other option is by only visual camera attached on miniature ROV for solely suey Purpose. This method does not includeburial depth of cable, cable position, cable condition & etc??‥‥.??? In result, current method does not generate any scientific or sophisticated data which does not allow any intelligent management decision. In conclusion, new method and new systems are needed urgently to upgrade current HVDC underwater cable survey technique in Korea to minimize the cost and time factors.

• Korean Journal of Ichthyology
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• v.32 no.4
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• pp.251-256
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• 2020

We described the first record of Callogobius shunkan from Korea, based on two specimens (54.9~66.1 mm in standard length) collected from the southern coastal waters of Jejudo Island. These specimens were characterized by prominent papillae ridges on the head, including postnasal and postorbital rows, well-developed pelvic frenum, dark brownish head, scattered whitish flecks on the body, and three blackish spots on the basal portion of dorsal fins. We proposed a new Korean name, "Ju-reum-mang-dug" for the species.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.2
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• pp.159-168
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• 2019

This study was designed to investigate the physiological response of humans to alcohol during underwater activity and to complete related risk analysis. After comparing human responses to alcohol during underwater activity, we analyzed physiological changes and risk level using a new risk analysis method developed in this study, 'Risk Assessment and Analysis (RAA)'. RAA is a modified method based on an internal control frame work. It has 3 steps, the first of which is to analyze risk correlation. The second step is to quantify risk and build a risk database. The last step is to analyze the diagramed risk map. Using RAA, the risk levels of alcohol use underwater were calculated and diagramed. The diagramed risk map was then used to analyze the difference between risk levels underwater before and after alcohol use. As a result, it was found that risk level underwater increased after alcohol use. This study shows alcohol use increases the ratio of high risk groups during underwater activity. It also indicates that risk levels can be quantified according to the likelihood and impairment scale, which can potentially help in identifying high risk groups for intensive management underwater.