Abbreviation | CDAA |
---|---|
Formation | 29 September 1973 |
Type | NGO |
Legal status | Incorporated association |
Purpose | Recreational cave diving administration, certification & training. |
Location | |
Region served | Australia |
Membership | 679 (2008) [1] |
National Director | Grant Pearce [2] |
Main organ | National Committee |
Website | www |
The Cave Divers Association of Australia (CDAA) is a cave diving organisation which was formed in September 1973 to represent the interests of recreational scuba divers who dive in water-filled caves and sinkholes principally in the Lower South East (now called the Limestone Coast) of South Australia (SA) and secondly in other parts of Australia. Its formation occurred after a series of diving fatalities in waterfilled caves and sinkholes in the Mount Gambier region between 1969 and 1973 and in parallel to a Government of South Australia inquiry into these deaths. The CDAA's major achievement has been the dramatic reduction of fatalities via the introduction of a site rating scheme and an associated testing system which was brought in during the mid-1970s. While its major area of operation is in the Limestone Coast region of SA, it administers and supports cave diving activity in other parts of Australia including the Nullarbor Plain and Wellington, New South Wales.
The CDAA is a nationally based organisation without state or territory branches and which is managed on a day-to-day basis by the National Committee – an executive consisting of five directors who are elected bi-annually. It is incorporated in SA as an incorporated association. Its purpose is concerned with fostering ‘the development, advancement, promotion, mapping, education, exploration, conservation, safety and research of underwater caves and related features.’ As dive sites are on either controlled Government or private property, one of the CDAA's key functions is to liaise with landowners to organise access for its members to enter and dive. The CDAA also owns a cave diving site, Tank Cave, which is located near Tantanoola and which was purchased in 2011. [3] [4]
From the late 1950s onwards, the Lower South East of SA became a popular destination for recreational scuba diving due to the presence of very clear water and easy access to deep water. However, this activity was completely unregulated. From 1969 to 1974, 11 people died at the following four cave diving sites: the Kilsby sinkhole (two fatalities), Piccaninnie Ponds (two fatalities), Alleyns Cave (three fatalities) and The Shaft (four fatalities). [5]
Immediately following the multiple fatality in The Shaft on 28 May 1973, Des Corcoran, the SA Deputy Premier, announced the appointment of a committee to ‘investigate safety precautions for Scuba Divers in Fresh water Sinkholes and Underwater Caves’ and which consisted of three government officers – L.D. Draper (Chair), R.J. Wight (Secretary), G .C. Cornwall, and three representatives from the SA recreational diving community – D.G. Burchell, P.G. Christopher and R.C. Pulford. In January 1974, the Committee offered five recommendations. Firstly, the creation of a government advisory body to essentially encourage a higher standard of cave diving practice by the recreational diving community; secondly, the publication and distribution of educational material to improve the awareness of cave diving safety; thirdly, the installation of warning signs at sinkhole and cave sites; fourthly, the sealing of Alleyns Cave (also known as the Death Cave) to prevent access and finally, in the case of the failure of the first three recommendations to reduce fatalities, consideration of control by legislative measures. The fifth recommendation suggested measures such as the licensing of instructors, an access permit system and the use of patrol officers to manage sites. [6] In April 1974, the SA Government announced that it would proceed with the recommendations of the committee including the creation of an advisory body. [7]
On 11 July 1973, after giving evidence to the Committee, a group of divers from the Lower South East, other parts of SA, Victoria and New South Wales met in Mount Gambier to agree to form the Cave Divers Association of Australia. [8] At a subsequent meeting in Mount Gambier on 29 September 1973, the organisation was officially formed. [9] Its formation is attributed to a desire amongst divers to have a ‘unified voice’ in order to defend cave diving and to demonstrate to both the landowners and the public a willingness and an ability to regulate their own affairs to achieve safer cave diving practice. [10] In a letter dated 21 October 1973 to the Committee, the CDAA officially announced its existence, that it was formed by divers experienced in sinkhole and cave diving who all agreed that "all members should be safety conscious and fully conversant in the use of scuba…" and that "inexperienced divers must not be permitted to dive without tuition under the guidance of an experienced cave diver". It also advised that it intended to incorporate in SA, create an instructor body, create a permit system for access and to approach all landowners (including government) to seek their support for exclusive access by CDAA members. [11]
In 1974, the newly formed CDAA devised a testing system that was intended to gain the confidence of the owners of the land on which most popular sinkholes and caves sites were located. This system assessed the ability of a diver to safely dive in cave sites against a rating system that divided these sites into three levels of difficulty. [12]
Firstly, popular cave diving sites were assessed against a rating system that divided these sites into the following three levels of difficulty: Category 1, i.e. open, deep-water caverns or sinkholes with minimal if any overhang or ceiling, Category 2, i.e. similar deep holes with considerable overhangs and Category 3, i.e. with a lot more penetration under flooded ceilings, and more severe silting potential.
Secondly, divers with a minimum level of certification and minimum experience were qualified by attending a theory and a practical examination. A successful result in both examinations resulted in the awarding of a combined membership and certification card for either Category 1, 2 or 3. [13]
A fourth category known as Advanced Category 3 (subsequently renamed Category 4) was introduced to include cave sites which were almost entirely flooded or which had areas that were unsuitable for two divers to negotiate at the same time. [14] [15]
During the years of the testing system's operation, there were only three deaths which all occurred as part of two accidents in Piccaninnie Ponds during the years 1974 and 1984. [16] The relative success of the system showed that CDAA had been very successful in ensuring that prospective cave divers have met minimum standards of training for cave diving.
In 1989, the CDAA replaced its testing system with a training and qualification system based on four new site categories as part of a restructure of its overall operation. [17]
The training system which was introduced in 1989 was based on the following four new site categories. [18]
Cavern – a Cavern is defined as body of water which has a maximum depth of 20 metres and may contain overhangs or near vertical ascents where daylight is always visible (i.e. limestone caverns, dams, flooded quarries, lakes etc.). The maximum linear penetration allowed is 40m from the surface. This replaced the Category 1 rating. [19]
Sinkhole – a Sinkhole is defined as a body of fresh water which can have large passages (no restrictions too small for two divers to swim adjacent to each other) and which exceeds 20m in depth. The maximum linear penetration allowed is 60m from the surface. The CDAA recommends a maximum depth of 40m on air. This replaced the Category 2 rating. [20]
Cave – a Cave is defined as an enclosed body of water containing overhangs, silt, darkness zones and passages that are still large enough for two divers to swim adjacent to each other. Cave sites allow a maximum penetration of 1/3 of a twin cylinder gas supply. This replaced the Category 3 rating. This qualification is similar to ratings such as 'Introduction to Cave' or 'Basic Cave' which are offered by other cave diving training organisations. [21]
Penetration – a Penetration is defined as an enclosed body of water containing silt, darkness zones, and passages without restriction on size of passages, number of cylinders or penetration distances. This replaced the Category 4 rating. [22]
The Cavern and Sinkhole qualifications were merged in 2007 to create a new qualification called Deep Cavern while the Penetration qualification was substantially revised in 2009 and renamed as Advanced Cave. [23]
In December 2017, the Deep Cavern qualification was replaced with a new qualification called Basic Cave as part of the following changes to the training system: [24]
Since the advent of the training system in 1989, three divers have died while diving in CDAA-rated sites in the Limestone Coast. The three fatalities occurred in Kilsby Sinkhole during March 2010, and in Tank Cave during February 2011 and October 2011. As of March 2013, the Coroner's Court of South Australia had not reported on these deaths. [25] [26] [27]
As of October 2013, most inland cave sites in Australia can only be accessed by CDAA members because the access negotiated by the CDAA usually includes the obligation to indemnify the landowner via waiver and insurance. The CDAA does recognise training provided by other organisations that is comparable to its own and will permit access via the following avenues. [28]
For divers visiting from outside of Australia, the CDAA may grant a visitor's pass which is effectively a temporary CDAA membership, for the purpose of accessing dive sites under the CDAA's authority. [29]
For individuals wishing to cross over and become a permanent member, the CDAA will recognise training from certain other organisations and individuals can apply for CDAA membership including receipt of qualification at a level comparable to their current level of training ONLY after being evaluated by a CDAA Instructor. [30]
The sites rated by the CDAA are located in the Limestone Coast region of SA, New South Wales, the Northern Territory and the Nullarbor Plain in Western Australia. Some sites have dual or multiple ratings because the underwater features and conditions vary to the extent that some parts of a site may require more advanced skill in order to safely access. [31]
While the Limestone Coast is the official name for the region, it is usually known within the cave diving community as the Mount Gambier region after the region's principal city. [32] [33] CDAA rated sites are located in the following local government areas.
The District Council of Grant :
Wreck diving is recreational diving where the wreckage of ships, aircraft and other artificial structures are explored. The term is used mainly by recreational and technical divers. Professional divers, when diving on a shipwreck, generally refer to the specific task, such as salvage work, accident investigation or archaeological survey. Although most wreck dive sites are at shipwrecks, there is an increasing trend to scuttle retired ships to create artificial reef sites. Diving to crashed aircraft can also be considered wreck diving. The recreation of wreck diving makes no distinction as to how the vessel ended up on the bottom.
Cave-diving is underwater diving in water-filled caves. It may be done as an extreme sport, a way of exploring flooded caves for scientific investigation, or for the search for and recovery of divers or, as in the 2018 Thai cave rescue, other cave users. The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave-diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset. Recreational cave-diving is generally considered to be a type of technical diving due to the lack of a free surface during large parts of the dive, and often involves planned decompression stops. A distinction is made by recreational diver training agencies between cave-diving and cavern-diving, where cavern diving is deemed to be diving in those parts of a cave where the exit to open water can be seen by natural light. An arbitrary distance limit to the open water surface may also be specified.
Sheck Exley was an American cave diver. He is widely regarded as one of the pioneers of cave diving, and he wrote two major books on the subject: Basic Cave Diving: A Blueprint for Survival and Caverns Measureless to Man. On February 6, 1974, Exley became the first chairman of the Cave Diving Section of the American National Speleological Society. During his career, he established many of the basic safety procedures used in cave and overhead diving today. Exley was also a pioneer of extreme deep scuba diving.
A cenote is a natural pit, or sinkhole, resulting when a collapse of limestone bedrock exposes groundwater. The term originated on the Yucatán Peninsula of Mexico, where the ancient Maya commonly used cenotes for water supplies, and occasionally for sacrificial offerings. The name derives from a word used by the lowland Yucatec Maya—tsʼonoʼot—to refer to any location with accessible groundwater.
The Cave Diving Group (CDG) is a United Kingdom-based diver training organisation specialising in cave diving.
Piccaninnie Ponds Conservation Park, formerly the Piccaninnie Ponds National Park, is a protected area of 862 hectares located in southeastern South Australia near Mount Gambier.
Ewens Ponds is a series of three water-filled limestone sinkholes in the state of South Australia located in the gazetted locality of Eight Mile Creek, on the watercourse of Eight Mile Creek about 25 kilometres south of Mount Gambier and 8.4 kilometres east of Port MacDonnell. The ponds are popular with recreational divers due to their excellent underwater visibility. It has a small fish population including the endangered golden pygmy perch. Ewens Ponds has been part of the Ewens Ponds Conservation Park since 1976.
Tom Mount was an American pioneering cave diver and technical diver.
The Blue Hole of Santa Rosa, or simply the Blue Hole, is a circular, bell-shaped pool or small lake located along Route 66 east of Santa Rosa, New Mexico that is a tourist attraction and swimming venue, and one of the most popular dive destinations in the US for scuba diving and training. The Blue Hole is an artesian well and cenote that was once used as a fish hatchery.
Agnes Milowka was an Australian technical diver, underwater photographer, author, maritime archaeologist and cave explorer. She gained international recognition for penetrating deeper than previous explorers into cave systems across Australia and Florida, and as a public speaker and author on the subjects of diving and maritime archaeology. She died aged 29 while diving in a confined space.
David Godwin Burchell BEM was a South Australian business man, a recreational scuba diver and a football administrator.
Little Blue Lake is a water-filled sinkhole (“cenote”) in the Australian state of South Australia located in the state's south-east in the locality of Mount Schank about 20 kilometres (12 mi) south of the municipal seat of Mount Gambier. It is notable locally as a swimming hole and nationally as a cave diving site. It is managed by the District Council of Grant and has been developed as a recreational and tourism venue.
Fossil Cave (5L81), formerly known as The Green Waterhole, is a cave in the Limestone Coast region of south-eastern South Australia. It is located in the gazetted locality of Tantanoola about 22 kilometres north-west of the city of Mount Gambier, only a few metres from the Princes Highway between Mount Gambier and Millicent. It is popular with cave divers and is notable for being both a unique paleontological site and the "type locality" for very rare crustaceans which to date have been found only in caves and Blue Lake in the Mount Gambier region.
Engelbrecht Cave is a cave system in the Australian state of South Australia consisting of a sinkhole with two major passages located under the Mount Gambier urban area. It is owned by the local government area of City of Mount Gambier and has been developed as a tourism venue. Its dry extent is notable as a show cave while its water-filled extent is notable as two separate cave diving sites.
Recreational dive sites are specific places that recreational scuba divers go to enjoy the underwater environment or for training purposes. They include technical diving sites beyond the range generally accepted for recreational diving. In this context all diving done for recreational purposes is included. Professional diving tends to be done where the job is, and with the exception of diver training and leading groups of recreational divers, does not generally occur at specific sites chosen for their easy access, pleasant conditions or interesting features.
Scuba diving tourism is the industry based on servicing the requirements of recreational divers at destinations other than where they live. It includes aspects of training, equipment sales, rental and service, guided experiences and environmental tourism.
The Kilsby sinkhole is a sinkhole located near Mount Gambier in South Australia. Since the late 1960s, the naturally occurring karst sinkhole has been used for recreational diving as well as civilian and police diver training. By visiting the Kilsby Sinkhole website, public can now access the site via a pre booked Sinkhole Tour or Snorkelling Tour.
The 1973 Mount Gambier cave diving accident was a scuba diving incident on 28 May 1973 at a flooded sinkhole known as "The Shaft" near Mount Gambier in South Australia. The incident claimed the lives of four recreational scuba divers: siblings Stephen and Christine M. Millott, Gordon G. Roberts, and John H. Bockerman. The four divers explored beyond their own planned limits, without the use of a guideline, and subsequently became lost, eventually exhausting their breathing air and drowning, with their bodies all recovered over the next year. To date, they are the only known fatalities at the site. Four other divers from the same group survived.
Cave diving is underwater diving in water-filled caves. The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset. Recreational cave diving is generally considered to be a type of technical diving due to the lack of a free surface during large parts of the dive, and often involves planned decompression stops. A distinction is made by recreational diver training agencies between cave diving and cavern diving, where cavern diving is deemed to be diving in those parts of a cave where the exit to open water can be seen by natural light. An arbitrary distance limit to the open water surface may also be specified. Despite the risks, water-filled caves attract scuba divers, cavers, and speleologists due to their often unexplored nature, and present divers with a technical diving challenge.
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