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Advanced Open Water Diver (AOWD) is a scuba diving certification level provided by several diver training agencies, such as Professional Association of Diving Instructors (PADI), and Scuba Schools International (SSI). The equivalent course offered by National Association of Underwater Instructors (NAUI) is the Advanced Scuba Diver. The certification level is roughly equivalent to the CMAS * Diver qualification and the British Sub-Aqua Club (BSAC) Ocean Diver qualification, although some differences occur. For example, BSAC Ocean Divers are trained in basic rescue skills for recreational diving, but only need five open water dives to qualify. The SSI Advanced Open Water program is different from most other organizations, as they require not only training but they also require diving experience. To be certified as a SSI AOWD one needs to have completed four specialty courses and minimum of 24 logged dives. In the absence of a logged dives requirement, it is possible to become certified as AOW with some other agencies while having less than 10 lifetime dives. Scuba Diving International (SDI) offers an Advanced Adventure Diver course similar to the Advanced Open Water Diver Course offered by the Agencies noted herein. == Background == The AOWD is the second level qualification in the American system, following the Open Water Diver qualification (OWD). At the OWD level divers gain basic knowledge of skills, equipment and theory for diving to a recommended depth of about . The AOWD is described by PADI as refining these skills, allowing the diver to explore a broader variety of diving to a maximum of deep. Critics point out that the AOWD course consists of a single navigation dive, a single deeper dive and a choice of three "adventure" dives whose primary purpose, these critics feel, is to provide an opportunity to sell the student a specialty course rather than to impart any particular level of competence in a new activity.〔http://www.padi.com/scuba/padi-courses/diver-level-courses/view-all-padi-courses/advanced-open-water-diver/default.aspx〕 Prior to entering an AOWD equivalent course, some organizations have logged dives prerequisites. The course usually contains some mandatory dives and knowledge while a certain portion of the course consists of free elective topics such as drift diving or search and recovery. The European international dive education system, CMAS, recognizes only three main levels of dive education indicated by a one star, two star, or three star designation. One star indicates an ability to dive, two star indicates additional skill of rescuing divers, and three star indicates the additional skill in leading a group of divers.〔http://www.cmasamericas.com/standards.htm〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Advanced Open Water Diver」の詳細全文を読む スポンサード リンク
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