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Container to supply high pressure gas for diving operations
A diving cylinder or diving gas cylinder is a gas cylinder used to store and transport high-pressure gas used in diving operations. This may be breathing
Diving_cylinder
Diving using equipment configuration where scuba sets are clipped to the diver's sides
Sidemount diving is the practice of diving with two or more cylinders secured at the sides of the body in line with the torso and without cylinders on the
Sidemount_diving
Machine used to compress breathing air for use by underwater divers
A diving air compressor is a breathing air compressor that can provide breathing air directly to a surface-supplied diver, or fill diving cylinders with
Diving_air_compressor
Cylindrical container for storing pressurised gas
A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. Gas storage cylinders may also be called bottles
Gas_cylinder
Swimming underwater, breathing gas carried by the diver
Scuba diving is an underwater diving mode where divers use breathing equipment completely independent of a surface breathing gas supply, and therefore
Scuba_diving
Equipment for controlling the buoyancy of a diver
Type of back-mount scuba harness Diving cylinder – Container to supply high pressure gas for diving operations Diving weighting system – Ballast carried
Buoyancy_compensator_(diving)
Valve controlling flow of breathing gas into and out of a scuba cylinder
for cylinders with 450 bar test pressure). The 300 bar pressures are common in European diving and in US cave diving. The most commonly used cylinder valve
Scuba_cylinder_valve
Mechanism that controls the pressure of a breathing gas supply for diving
A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving. The most
Diving_regulator
Mixing and filling cylinders with breathing gases for use when scuba diving
Gas blending for scuba diving (or gas mixing) is the filling of diving cylinders with non-air breathing gases such as nitrox, trimix and heliox. Use of
Gas_blending_for_scuba_diving
Periodical inspection and testing to revalidate fitness for service
manufacture, capacity and weight are stamped on the cylinder. Most countries require diving cylinders to be checked on a regular basis. This usually consists
Testing and inspection of diving cylinders
Testing_and_inspection_of_diving_cylinders
Scuba set with variable-density buoyancy control
The Avelo diving system is a single cylinder, back-mounted scuba set with variable density buoyancy control. The gas cylinder is a carbon fibre over aluminium
Avelo_diving_system
Underwater diving breathing gas supplied from the surface
Surface-supplied diving is a mode of underwater diving using equipment supplied with breathing gas through a diver's umbilical from the surface, either
Surface-supplied_diving
Equipment used to facilitate underwater diving
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make diving activities possible, easier, safer and/or more
Diving_equipment
Emergency gas supply cylinder carried by a diver
In solo diving, a buddy bottle is a bailout cylinder carried as a substitute for an emergency gas supply from a diving buddy. A bailout cylinder for recreational
Bailout_bottle
Self-contained underwater breathing apparatus
was a rebreather and is different from the open-circuit diving regulator and diving cylinder assemblies also commonly referred to as scuba. Open-circuit-demand
Scuba_set
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make diving activities possible, easier, safer and/or more
List of diving equipment manufacturers
List_of_diving_equipment_manufacturers
Estimation of breathing gas mixtures and quantities required for a planned dive profile
cylinder – Emergency gas supply cylinder carried by a diver Dive planning – Process of planning an underwater diving operation Rule of thirds (diving) –
Scuba_gas_planning
Technical diving safety philosophy
(DIR) is a holistic approach to scuba diving that encompasses several essential elements, including fundamental diving skills, teamwork, physical fitness
Doing_It_Right_(scuba_diving)
Air under a pressure greater than atmospheric
gas by underwater divers. The diver may carry it in a high-pressure diving cylinder, or supplied from the surface at lower pressure through an air line
Compressed_air
Origins and development of diving using breathing gas carried by the diver
The history of scuba diving is closely linked with the history of diving equipment. By the turn of the twentieth century, two basic architectures for
History_of_scuba_diving
Diving incident in the Maldives
The 2026 Dhekunu Kandu cave diving incident was a cave diving incident that occurred on May 14th, 2026 at the Dhekunu Kandu cave, also known as the Devana
2026 Dhekunu Kandu cave diving incident
2026_Dhekunu_Kandu_cave_diving_incident
Arrangement and function of the components of regulators for underwater diving
yoke clamp, or a DIN screw fitting to connect it to the valve of the diving cylinder. There are also European standards for scuba regulator connectors for
Mechanism of diving regulators
Mechanism_of_diving_regulators
2018 international rescue mission in Thailand
diving school in Phuket, contributed in cave diving capacity. Canada: Erik Brown, a dive instructor from Vancouver, participated on the cave diving team
Tham_Luang_cave_rescue
Topics referred to by the same term
into or out of a gas storage cylinder a scuba cylinder valve to control the flow of gas into or out of the diving cylinders of a scuba set a valve to control
Cylinder_valve
Ballast carried to counteract buoyancy
weights to counteract the buoyancy of other diving equipment, such as diving suits and aluminium diving cylinders, and buoyancy of the diver. The scuba diver
Diving_weighting_system
Skills required to scuba-dive safely
Diving instructors affiliated to a diving certification agency may work independently, or through a university, a dive club, a dive school or a dive shop
Scuba_skills
Equipment used in the support of an underwater diving operation
Diving support equipment facilitates a diving operation. It is either not taken into the water during the dive, such as the gas panel and compressor, or
Diving_support_equipment
Breathing gas, mixture of nitrogen and oxygen
deep diving, trimix or heliox gases are typically used; these gases contain helium to reduce the amount of narcotic gases in the mixture. Diving with
Nitrox
Rule of thumb for scuba gas management
scuba diving, the rule of thirds is a rule of thumb used by divers to plan dives so they have enough breathing gas remaining in their diving cylinder at
Rule_of_thirds_(diving)
diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts
Glossary of underwater diving terminology: A–C
Glossary_of_underwater_diving_terminology:_A–C
Chamber for transporting divers vertically through the water
Diving bells are usually suspended by a cable, and lifted and lowered by a winch from a surface support platform. Unlike a submersible, the diving bell
Diving_bell
Diving beyond the scope of recreational diving
Technical diving (also referred to as tec diving or tech diving) is scuba diving that exceeds the agency-specified limits of recreational diving for non-professional
Technical_diving
Small independent scuba cylinder usually carried for emergency gas supply
A pony bottle or pony cylinder is a small diving cylinder which is fitted with an independent regulator, and is usually carried by a scuba diver as an
Pony_bottle
Logistical aspects of scuba breathing gas
of scuba diving which includes the gas planning, blending, filling, analysing, marking, storage, and transportation of gas cylinders for a dive, the monitoring
Scuba_gas_management
List of articles related to underwater diving grouped by topical relevance
is provided as an overview of and topical guide to underwater diving: Underwater diving – as a human activity, is the practice of descending below the
Outline_of_underwater_diving
English broadcaster and natural historian (born 1926)
on-screen presenter due to difficulties in speaking to a camera through diving apparatus, but asked Attenborough to narrate the films. The same team reunited
David_Attenborough
Scuba cave diving incident in South Australia
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
1973 Mount Gambier cave diving accident
1973_Mount_Gambier_cave_diving_accident
Australian conservationist (1962–2006)
Decompression cylinder Decompression tables Decompression trapeze Dive computer Diving bell Diving shot Diving stage Jersey upline Jonline Diving suit Atmospheric
Steve_Irwin
Closed or semi-closed circuit scuba
technical diving decompression computers for rebreather diving, and some rebreather manufacturers use dive computer hardware repackaged by dive computer
Diving_rebreather
Japanese pearl divers
occupation. ama (海女) – a sea-diving fisherwoman ama (海士) – a sea-diving fisherman ama (海人), kaijin (海人) – a sea-diving fisherperson of either gender
Ama_(diving)
Equipment used specifically for surface supplied diving
from a specialised diving compressor, high-pressure gas storage cylinders, or both. In commercial and military surface-supplied diving, a backup source
Surface-supplied diving equipment
Surface-supplied_diving_equipment
Instrument to calculate decompression status in real time
exposure data, a computer-readable dive log, and the pressure of the remaining breathing gas in the diving cylinder. This recorded information can be used
Dive_computer
Semi-submersible offshore drilling rig
Sea, four divers were in a diving chamber system on the rig's deck that was connected by a trunk (a short passage) to a diving bell. The divers were Edwin
Byford_Dolphin
Disorder caused by dissolved gases forming bubbles in tissues
Navy Diving Manual indicates that ascent rates greater than about 20 m/min (66 ft/min) when diving increase the chance of DCS, while recreational dive tables
Decompression_sickness
Descending below the surface of the water to interact with the environment
diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique
Underwater_diving
Gas used for human respiration
reducing nitrogen narcosis or allowing safer deep diving. The techniques used to fill diving cylinders with gases other than air or pure oxygen are called
Breathing_gas
Diving for the purpose of leisure and enjoyment
with a dive buddy or from a bailout cylinder for open circuit diving, and by bailout to open circuit for rebreather diving. Most recreational diving officially
Recreational_diving
Device that uses compressed air to fire projectiles
either a high-pressure stand pump or by decanting air from a larger diving cylinder. Pump pneumatic air guns, or pump guns, use a lever-operated onboard
Air_gun
Gas compressed and stored in cylinders
where a yellow shoulder means chlorine. Diving cylinder – Container to supply high pressure gas for diving operations Gas blending – Producing special
Bottled_gas
Hyperbaric pressure vessel for human occupancy used in diving operations
diving chambers, differentiated by the way in which the pressure in the diving chamber is produced and controlled. The historically older open diving
Diving_chamber
Diving in water-filled caves
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
Cave_diving
Deaths occurring while scuba diving or as a consequence of scuba diving
Scuba diving fatalities are deaths occurring while scuba diving or as a consequence of scuba diving. The risks of dying during recreational, scientific
Scuba_diving_fatalities
Copper helmet with rubberised canvas diving suit and weighted boots
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit, or heavy gear, is a type of diving suit that was formerly
Standard_diving_dress
Techniques requiring specific equipment and procedures
A mode of diving, or diving mode, is a particular way to dive underwater that requires specific equipment, procedures and techniques, and may expose the
Modes_of_underwater_diving
Underwater diving without breathing apparatus
Freediving, free-diving, free diving, or breath-hold diving is a mode of underwater diving that relies on breath-holding (apnea) until resurfacing rather
Freediving
Developments over time in the human activity
times commercial applications such as sponge diving and marine salvage were established. Military diving also has a long history, going back at least
History_of_underwater_diving
Ship used as a floating base for professional diving projects
A diving support vessel is a ship that is used as a floating base for professional diving projects. Basic requirements are the ability to keep station
Diving_support_vessel
Underwater diving under ice
Ice diving is a type of penetration diving where the dive takes place under ice. Because diving under ice places the diver in an overhead environment
Ice_diving
Equipment used by divers to facilitate decompression
deep diving without using dive tables, decompression software or a dive computer. It is generally taught as part of the "DIR" philosophy of diving promoted
Decompression_equipment
Group of people working together to enhance dive safety and achieve a task
A diving team is a group of people who work together to conduct a diving operation. A characteristic of professional diving is the specification for minimum
Diving_team
Diving mode and decompression technique
Saturation diving is an ambient pressure diving technique which allows a diver to remain at working depth for extended periods during which the body tissues
Saturation_diving
Storage vessel for oxygen
used for accelerated decompression in technical diving, in high pressure cylinders some types of diving rebreather: oxygen rebreathers and fully closed
Oxygen_tank
Physiological responses to immersion of air-breathing vertebrates
The diving reflex, also known as the diving response and mammalian diving reflex, is a set of physiological responses to immersion that overrides the
Diving_reflex
Articulated pressure-resistant anthropomorphic housing for an underwater diver
An atmospheric diving suit (ADS), atmospheric pressure diving suit or single atmosphere diving suit is a small one-person articulated submersible which
Atmospheric_diving_suit
Pirate Blackbeard's ship
Southerly, C.; Gillman-Bryan, J. (2003). "Diving on the Queen Anne's Revenge". In Norton, S. F. (ed.). Diving for Science. American Academy of Underwater
Queen_Anne's_Revenge
USMC deep reconnaissance unit
Springs, California. United States Marine Corps Combatant Diver Course – Navy Diving Salvage and Training Center, Naval Support Activity Panama City, Florida
United States Marine Corps Force Reconnaissance
United_States_Marine_Corps_Force_Reconnaissance
List of terms used in underwater diving and their meanings in context
diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts
Glossary of underwater diving terminology: P–S
Glossary_of_underwater_diving_terminology:_P–S
British science fiction writer (1917–2008)
writing, Clarke set up several diving-related ventures with his business partner Mike Wilson. In 1956, while scuba diving, Wilson and Clarke uncovered ruined
Arthur_C._Clarke
German filmmaker (1902–2003)
motion shots. Riefenstahl played with the idea of slow motion, underwater diving shots, extremely high and low shooting angles, panoramic aerial shots, and
Leni_Riefenstahl
Special forces unit of the British Army
different areas: Boat troop – specialists in maritime skills including diving using rebreathers, using kayaks (canoes) and rigid-hulled inflatable boats
Special_Air_Service
Alphabetical listing of underwater diving related topics
diving procedure – Skill required to scuba-dive safely Scuba diving quarry – Disused and flooded quarry repurposed for underwater diving Scuba diving
Index_of_underwater_diving:_S
Underwater sport using recreational open circuit scuba equipment in a swimming pool
Sport diving is an underwater sport that uses recreational open circuit scuba diving equipment and consists of a set of individual and team events conducted
Sport_diving_(sport)
Tactical scuba diver
call themselves "combat divers" or similar. Tactical diving is a branch of professional diving carried out by armed forces and tactical units. They may
Frogman
Diving to gather natural sponges
Sponge diving is underwater diving to collect soft natural sponges for human use. Most sponges are too rough for general use due to their structural spicules
Sponge_diving
Metallurgical failure mode of cracking under a prolonged static load
time. It is particularly noted in aluminium pressure vessels such as diving cylinders. Sustained load cracking is not a manufacturing defect; it is a phenomenon
Sustained_load_cracking
Underwater diving to a depth beyond the norm
Deep diving is underwater diving to a depth beyond the normal range accepted by the associated community. In some cases this is a prescribed limit established
Deep_diving
Chronological list of notable events in the history of underwater diving equipment
timeline of underwater diving technology is a chronological list of notable events in the history of the development of underwater diving equipment. With the
Timeline_of_diving_technology
Techniques and procedures for safe decompression of divers
technical diving part 2: decompression from deep technical dives". Diving and Hyperbaric Medicine. 43 (2): 96–104. PMID 23813463. "How to Switch Your Diving Gas
Decompression_practice
Vessel for pressurised gases or liquids
Spacecraft with life-support systems Diving chamber – Hyperbaric pressure vessel for human occupancy used in diving operations Hyperbaric chamber – Hyperbaric
Pressure_vessel
Recreational diving without a dive buddy
Solo diving is the practice of self-sufficient underwater diving without a "dive buddy", particularly with reference to scuba diving, but the term is
Solo_diving
Emergency supply of breathing gas for an underwater diver
Cave diving – Diving in water-filled caves Decompression (diving) – Pressure reduction and its effects during ascent from depth Diving cylinder – Container
Alternative_air_source
Underwater diving using self contained breathing gas recycling apparatus
Rebreather diving is underwater diving using diving rebreathers, a class of underwater breathing apparatus which recirculates the breathing gas exhaled
Rebreather_diving
Alphabetical listing of underwater diving related topics
Air diving – Underwater diving using air as the breathing gas Air embolism – Vascular blockage by air bubbles Air-integrated dive computer – Dive computer
Index of underwater diving: A–C
Index_of_underwater_diving:_A–C
Fatal offshore diving accident in Scotland, 1979
routine dive in the East Shetland Basin of the North Sea, the diving bell of the diving support vessel MS Wildrake became separated from its main lift
Wildrake_diving_accident
diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts
Glossary of underwater diving terminology: H–O
Glossary_of_underwater_diving_terminology:_H–O
Recreational diving on wrecks
Wreck diving is recreational diving where the wreckage of ships, aircraft and other artificial structures are explored. The term is used mainly by recreational
Wreck_diving
Garment or device designed to protect a diver from the underwater environment
A diving suit is a garment or device designed to protect a diver from the underwater environment. A diving suit may also incorporate a breathing gas supply
Diving_suit
Pressure reduction and its effects during ascent from depth
atmospheric pressure when free-diving or snorkelling will not usually need to decompress. Divers using an atmospheric diving suit do not need to decompress
Decompression_(diving)
Portable apparatus to recycle breathing gas
sets including rebreathers) NOAA Diving Program (U.S.) (28 Feb 2001). Joiner, James T. (ed.). NOAA Diving Manual, Diving for Science and Technology (4th ed
Rebreather
Perception of one's environment
(aeronautics) – In-flight visual impairment by pilots Diving safety – Risk management of underwater diving activities Information integration – Cohesive synthesis
Situation_awareness
Recreational diver training and certification agency
The Professional Association of Diving Instructors (PADI) is a recreational diving membership and diver training organization founded in 1966 by John Cronin
Professional Association of Diving Instructors
Professional_Association_of_Diving_Instructors
Severely deficient supply of oxygen
Orme, Brown, Green & Longman. Elsner R (September 1989). "Perspectives in diving and asphyxia". Undersea Biomedical Research. 16 (5): 339–44. PMID 2678664
Asphyxia
Facility for supporting saturation diving projects
A saturation diving system is the combined and installed equipment required to support a saturation diving operation. It may be an underwater habitat
Saturation_diving_system
Process of planning an underwater diving operation
or more diving cylinders containing breathing gas at high pressure connected to a primary diving regulator, and may include additional cylinders for decompression
Dive_planning
Crewed full ocean depth rated submersible
Challenger Deep Timeline of diving technology – Chronological list of notable events in the history of underwater diving equipment Struwe, Jonathan (2019-05-04)
DSV_Limiting_Factor
Diving inside a protective cage to observe sharks in the wild
Shark cage diving is underwater diving or snorkeling where the observer remains inside a protective cage designed to prevent sharks from making contact
Shark_cage_diving
Underwater diving during the hours of darkness
Night diving is underwater diving done during the hours of darkness. It frequently refers specifically to recreational diving which takes place in darkness
Night_diving
British ocean liner (1907–1915)
from the Discovery Channel was also to be on hand. A dive team from Cork Sub Aqua Club, diving under licence, discovered 15,000 rounds of the .303 (7
RMS_Lusitania
Special forces unit of the Royal Navy
sometimes called the boating and diving course. It lasts eight weeks and covers specialist maritime skills such as canoeing, diving, boating, underwater navigation
Special_Boat_Service
Alphabetical listing of underwater diving related topics
Faber Cylinders – Italian manufacturer of high pressure gas storage cylinders Faceplate (diving) – Transparent viewport on the front of a diving helmet
Index of underwater diving: F–K
Index_of_underwater_diving:_F–K
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DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
DIVING CYLINDER
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