The National Diving and Activity Centre (NDAC) was a facility located at a large flooded quarry at Tidenham, Gloucestershire, England, near to the border with Wales at Chepstow. It was previously Dayhouse Quarry, a source of limestone, which was flooded in 1996. The diving centre opened in 2003, [1] and closed in 2022. [2]
An inland scuba diving site, it was popular with technical and free divers due to the depths of up to 80 metres (260 ft), [3] with underwater attractions in depths ranging from 6 metres (20 ft) to 76 metres (249 ft). PADI and IANTD training was provided on site, and many local BSAC and SAA clubs used the site for training. [4] All freediving at the NDAC was undertaken through SaltFree Divers. [5]
The site also included an inflatable course, bungee jumps, paddle boarding and a 700 m (2,300 ft) long zip wire. [2]
On 18 February 2022, the NDAC issued a statement via social media saying that the site was permanently closed. [6] The following month it was reported that the site had been purchased by a company seeking to develop equipment to enable people to live deep under water. [7]
In 2017, the NDAC was a location for the Netflix folk horror film Apostle starring Michael Sheen and Dan Stevens. [8]
Extreme ironing is an extreme sport in which people take ironing boards to remote locations and iron items of clothing. According to the Extreme Ironing Bureau, extreme ironing is "the latest danger sport that combines the thrills of an extreme outdoor activity with the satisfaction of a well-pressed shirt."
Technical diving is scuba diving that exceeds the agency-specified limits of recreational diving for non-professional purposes. Technical diving may expose the diver to hazards beyond those normally associated with recreational diving, and to a greater risk of serious injury or death. The risk may be reduced by appropriate skills, knowledge and experience, and by using suitable equipment and procedures. The skills may be developed through appropriate specialised training and experience. The equipment often involves breathing gases other than air or standard nitrox mixtures, and multiple gas sources.
Deep diving is underwater diving to a depth beyond the norm accepted by the associated community. In some cases this is a prescribed limit established by an authority, while in others it is associated with a level of certification or training, and it may vary depending on whether the diving is recreational, technical or commercial. Nitrogen narcosis becomes a hazard below 30 metres (98 ft) and hypoxic breathing gas is required below 60 metres (200 ft) to lessen the risk of oxygen toxicity.
Diving activities are the things people do while diving underwater. People may dive for various reasons, both personal and professional. While a newly qualified recreational diver may dive purely for the experience of diving, most divers have some additional reason for being underwater. Recreational diving is purely for enjoyment and has several specialisations and technical disciplines to provide more scope for varied activities for which specialist training can be offered, such as cave diving, wreck diving, ice diving and deep diving. Several underwater sports are available for exercise and competition.
Recreational diving or sport diving is diving for the purpose of leisure and enjoyment, usually when using scuba equipment. The term "recreational diving" may also be used in contradistinction to "technical diving", a more demanding aspect of recreational diving which requires more training and experience to develop the competence to reliably manage more complex equipment in the more hazardous conditions associated with the disciplines. Breath-hold diving for recreation also fits into the broader scope of the term, but this article covers the commonly used meaning of scuba diving for recreational purposes, where the diver is not constrained from making a direct near-vertical ascent to the surface at any point during the dive, and risk is considered low.
Professional diving is underwater diving where the divers are paid for their work. The procedures are often regulated by legislation and codes of practice as it is an inherently hazardous occupation and the diver works as a member of a team. Due to the dangerous nature of some professional diving operations, specialized equipment such as an on-site hyperbaric chamber and diver-to-surface communication system is often required by law, and the mode of diving for some applications may be regulated.
Diving medicine, also called undersea and hyperbaric medicine (UHB), is the diagnosis, treatment and prevention of conditions caused by humans entering the undersea environment. It includes the effects on the body of pressure on gases, the diagnosis and treatment of conditions caused by marine hazards and how relationships of a diver's fitness to dive affect a diver's safety. Diving medical practitioners are also expected to be competent in the examination of divers and potential divers to determine fitness to dive.
Underwater habitats are underwater structures in which people can live for extended periods and carry out most of the basic human functions of a 24-hour day, such as working, resting, eating, attending to personal hygiene, and sleeping. In this context, 'habitat' is generally used in a narrow sense to mean the interior and immediate exterior of the structure and its fixtures, but not its surrounding marine environment. Most early underwater habitats lacked regenerative systems for air, water, food, electricity, and other resources. However, some underwater habitats allow for these resources to be delivered using pipes, or generated within the habitat, rather than manually delivered.
Underwater diving, as a human activity, is the practice of descending below the water's surface to interact with the environment. It is also often referred to as diving, an ambiguous term with several possible meanings, depending on context. Immersion in water and exposure to high ambient pressure have physiological effects that limit the depths and duration possible in ambient pressure diving. Humans are not physiologically and anatomically well-adapted to the environmental conditions of diving, and various equipment has been developed to extend the depth and duration of human dives, and allow different types of work to be done.
Stoney Cove is a large flooded quarry which is a popular inland scuba diving site, located between Stoney Stanton and Broughton Astley in Leicestershire, England.
Eccleston Quarry is a mile south of Eccleston, Lancashire. It is also called Eccleston Delph and Eccy Delph. It is an old stone quarry that flooded. It is a popular site for scuba diving. Visibility is generally very poor and ropes have been strung between each underwater 'feature' to aid navigation, since traditional compass methods are all but impossible in the murky waters. Much work has been undertaken to improve visibility in the recent past, and by 2010 the visibility was much improved.
Swanage Pier is a Victorian pier which extends into the southern end of Swanage Bay near the town of Swanage, in the south-east of Dorset. It was built in 1895 for passenger ship services. It is situated on the eastern coast of the Isle of Purbeck, approximately 6+1⁄4 miles (10.1 km) south of Poole and 25 miles (40 km) east of Dorchester in the United Kingdom.
Dutch Springs is a spring-fed lake located north of the city of Bethlehem, Pennsylvania, in the United States. Since 1980, a commercial recreation area, with facilities for scuba diving, has operated at the location. Dutch Springs had planned on selling the property to a warehouse company and it was expected to close operations. In 2022 the Dutch Springs commercial diving and training facility was reopened under the name "Lake Hydra".
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 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 South Australian Government 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.
Capernwray Dive Centre is a large flooded former quarry, presently operated as an inland scuba diving site and training centre, near the village of Over Kellet, Lancashire, England.
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.
The Australian Diver Accreditation Scheme (ADAS) is an international commercial and occupational diver certification scheme. It has mutual recognition arrangements with other equivalent national schemes. ADAS qualifications have international recognition.
The 1973 Mount Gambier cave diving accident was a scuba diving incident in 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. As of May 2015, 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.
{{cite web}}: CS1 maint: url-status (link)Coordinates: 51°39′20″N2°38′50″W / 51.65556°N 2.64722°W
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