Alphabetical listing of underwater diving related topics
   Surface-supplied divers riding a stage to the underwater workplace  The following index  is provided as an overview of and topical guide to underwater diving: Links to articles and redirects to sections of articles which provide information on each topic are listed with a short description of the topic. When there is more than one article with information on a topic, the most relevant is usually listed, and it may be cross-linked to further information from the linked page or section.
Underwater diving can be described as all of the following:
A human activity  –  intentional, purposive, conscious and subjectively meaningful sequence of actions. Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater environment for pleasure, competitive sport, or as a means to reach a work site for profit or in the pursuit of knowledge, and may use no equipment at all, or a wide range of equipment which may include breathing apparatus, environmental protective clothing, aids to vision, communication, propulsion, maneuverability, buoyancy control and safety equipment, and tools for the task at hand. There are seven sub-indexes, listed here. The tables of content should link between them automatically:
D Section contents: Top of section , Da–Dd , De , Di , Do , Dr , Ds , Du–Dw , Dy  
De Section contents: Top of section , Da–Dd , De , Di , Do , Dr , Ds , Du–Dw , Dy  
 Dead space (physiology)    – Inhaled air not part of gas exchange   Deadspace (in breathing apparatus)    – Inhaled air not part of gas exchange   Deadweight anchor    – Anchor that relies on weight and friction for holding   Deane, Charles Anthony    – Pioneering diving engineer and inventor of a surface supplied diving helmet   Deane, John    – Joint inventor of the diving helmet   Death of Linnea Mills    – Death of a recreational scuba diver during training   Decima Flottiglia MAS    – Italian naval commando frogman unit of the Fascist era   Deck decompression chamber    – Hyperbaric chamber suitable for surface decompression or emergency use at a dive site   Decompression algorithm    – Procedure to calculate the decompression needed for a given dive profile   Decompression bar    – Horizontal bar suspended below the water surface at a decompression stop   Decompression buoy    – Inflatable surface marker buoy deployed from underwater   Decompression ceiling    – Theoretic limit to ascent with a decompression obligation   Decompression chamber    – Any pressure vessel for human occupancy used to decompress a person   Decompression chamber operation    – Operation of a hyperbaric chamber in support of underwater diving   Decompression computer  , also known as   dive computer    – Instrument to calculate decompression status in real time   Decompression cylinder    – Scuba cylinder carrying decompression gas   Decompression (diving)    – Pressure reduction and its effects during ascent from depth   Decompression efficiency    – Acceptable safety in a short decompression time   Decompression emergency    – Contingency threatening the diver's health during decompression   Decompression equipment    – Equipment used by divers to facilitate decompression   Decompression gas    – Oxygen-rich gas used for accelerated decompression   Decompression illness    – Disorders arising from ambient pressure reduction   Decompression model    – Conceptual explanation forf decompression that helps formulate predictions   Decompression modelling    – Using conceptual explanation forf decompression to help formulate predictions   Decompression monitoring equipment    – Equipment for monitoring depth and run time of a dive, and decompression status   Decompression obligation    – Physiological requirement for decompression to reduce risk of injury   Decompression planning    – Estimating the decompression for a planned dive profile   Decompression practice    – Techniques and procedures for safe decompression of divers   Decompression safety    – How well a decompression controls risk of DCS   Decompression schedule    – A specified ascent rate and series of increasingly shallower decompression stops   Decompression sickness    – Disorder caused by dissolved gases forming bubbles in tissues   Decompression station    – Place set up to facilitate the planned decompression for a dive team   Decompression status    – The theoretical level of inert gas content of the body tissues   Decompression status monitoring    – Keeping appraised of whether and how much decompression is required by a diver   Decompression stop    – Pause during tascent from a dive to release dissolved inert gas in tissues   Decompression stress    – Combined influences on formation of decompression gas bubbles   Decompression theory    – Theoretical modelling of decompression physiology   Decompression trapeze    – Horizontal bars suspended at decompression stop depths   de Corlieu, Louis    – French naval officer and inventor of the swimfin   Deep air diving    – Underwater diving beyond accepted limits for breathing air   Deep air diving blackout    – Loss of consciousness due to extreme nitrogen narcosis   Deepblu    – Manufacturer of dive computers   DeepC    – Autonomous underwater vehicle powered by a fuel cell   Deep Diver    – Research submersible   Deep diving    – Underwater diving to a depth beyond the norm accepted by the associated community   Deep Drone    – US Navy remotely operated underwater vehicle   DeepFlight Merlin    – 3-seater wet sub diver propulsion vehicle   Deepsea Challenger    – Submersible that traveled to the Challenger Deep   Deepspot    – Deep swimming pool in Poland   Deep-submergence rescue vehicle    – Submersible used for rescue of people from disabled submarines and submersibles   Deep stop    – Additional stop deeper than the first obligatory decompression stop   Deep water blackout (disambiguation)    Deep water submersible    – Self-propelled deep-diving crewed submersible   Defence Diving School    – Diver training centre in Portsmouth Harbour, England   Defense against swimmer incursions    – Methods of protection from incursions by divers and swimmers   Defence and Civil Institute of Environmental Medicine    – Canadian research institute which produced decompression tables   Delta-P (hazard)  , also known as   ΔP  , δp   – Underwater hazard due to strong localised pressure differential   Delta P Technology    – Technical dive computer manufacturer   Deluge sprinkler system    – Sprinklers that spray water over the entire hazard when activated   Demand controlled breathing apparatus    – Equipment that supplied breathing gas only when required   Demand helmet    – Diving helmet supplied with gas through a demand valve   Demand valve oxygen therapy    – Use of high-inhalation concentrations of oxygen as medical treatment   Demister (scuba)    – Surfactant used to prevent condensation of water droplets on a mask or helmet viewport   Demobilise (diving)    – The dismantling, packing and transport back to storage of the dive spread   Demographics of recreational diving    – Population distribution of recreational divers   Demographics of scientific divers    – Population distribution of scientific divers   Denayrouze, Auguste    – French inventor of a demand air supply regulator for underwater diving   Dental barotrauma    – Damage to a tooth caused by a change of ambient pressure   Department of Employment and Labour    – Department of the South African government responsible for matters related to employment   Deployment of a decompression buoy    – Launching a delayed surface marker buoy   Depth blackout    – Loss of consciousness due to deep diving while breathing air   Depth gauge    – Instrument that indicates depth below a reference surface   DEPTHX    – Autonomous underwater vehicle for exploring sinkholes in Mexico   Descending and ascending (diving)    – Procedures for safe ascent and descent in underwater diving   Descending excursion    – Saturation dive where ambient pressure is more than storage pressure   DESCO    – American manufacturer of commercial diving equipment   DESCO air hat    – Surface -supplied diving free-flow helmet   Developed pressure    – Working pressure corrected for actual temperature  Di Section contents: Top of section , Da–Dd , De , Di , Do , Dr , Ds , Du–Dw , Dy  
 Diamond Reef System    – System for training divers in buoyancy, trim and maneuvering skills   Diffuser (breathing set part)    – Component fitted over the exhaust outlet to break up the exhaled gas   Diffusion    – Transport of dissolved species from the highest to the lowest concentration region   Diluent flush  , also known as   dil flush    – Rebreather diving safety procedure   Diluent gas    – Metabolically inert gas in a breathing mixture   DIN 477    – German standard for gas cylinder valves   DIN 7876    – German standard for manufacture of swimfins   DIN connection    – Scuba cylinder standard valve connection   Dip tube    – Tube at the valve base to keep detritus out of the inlet   DIR philosophy    – An approach to scuba diving safety   Directed search    – Underwater search directed from the surface   Disappearance of Ben McDaniel    – Scuba diver who disappeared during or after a cave dive   Distance line  , also known as   guide line    – Line deployed by scuba divers for navigation   Diuresis    – Increase in urine production   Dive bag    – Container for transporting personal diving equipment   Dive boat    – Boat used for the support of scuba diving operations   Dive boat operation    – Operational procedures for a boat supporting diving   Dive boat skipper    – Person in command of a dive boat   Dive briefing    – Meeting of the dive team to discuss details before the diving operation   Dive center    – Service organisation providing recreational diver training, equipment and dive outings   Dive computer  , also known as   Decompression computer    – Instrument to calculate decompression status in real time   Dive computer algorithm    – Program for calculating decompression status and an acceptably safe ascent profile   Dive computer failure modes    – Ways that a personal decompression computer can malfunction   Dive computer lockout    – Programmed shutdown of decompression information   Dive cylinder    – Cylinder to supply breathing gas for divers   Dive guide (disambiguation)    Dive guide (publication)    – Travel guides for recreational diving   Dive leader  , also known as dive guide,   divemaster    – Recreational diving certification and role   Dive Leader    – Recreational diving certification   Dive light    – Light used underwater by a diver   Dive location    – Location at which a dive may occur   Dive log    – Record of diving history of an underwater diver   Divemaster    – Recreational dive leader certification and role   Dive plan    – Product of dive planning activity   Dive planning    – Process of planning an underwater diving operation   Dive planning software    – Applications for gas planning and decompression planning   Dive profile    – Diver's pressure exposure over the time of a dive   Dive resort    – Recreational diving service provider with accommodation   Dive school    – Establishment for diver training   Dive site    – Place at which underwater diving occurs   Dive skins    – Thin exposure suit to protect the skin in warm water   Divesoft    – Manufacturer of diving rebreathers and accessories   Dive spool    – Simple flanged cylindrical line-holder   Dive spot    – Location at which a dive may occur   Dive suit    – Garment or device designed to protect a diver from the underwater environment   Dive supervisor    – Recreational dive group leader responsible for safety   Dive Supervisor    – Recreational dive leadership certification   Dive tables    – Data used to determine a decompression schedule for a given dive profile and breathing gas   Dive team    – A group of people working together to enhance dive safety and achieve a task   Dive timer    – Electronic timer that automatically records the run time of a dive   Dive weights    – Ballast weights carried by divers to counteract buoyancy of equipment   Dive-float    – Small buoy towed by an underwater diver to indicate presence   Dive supervision    – The work of the manager of a professional diving team   Dive/surface valve   ( DSV )   – Valve on a rebreather mouthpiece to isolate the breathing loop when not in use   Diver, The    – Sculpture by John Kaufman   Diver (United States Navy)    – US Navy personnel qualified in underwater diving and salvage   Diver certification    – Certification as competent to dive to a specified standard   Diver certification agency    – Organisation which issues certification for competence in diving skills   Diver certification equivalences    – Comparison between certifications by different agencies   Diver certification organisation    – Organisation that issues certificates of competence to underwater divers   Diver communications    – Methods used by underwater divers to communicate   Diver detection sonar    – Acoustic location systems to detect divers and submerged swimmer delivery vehicles   Diver down flag    – Flag signal indicating divers are in the water nearby   Diver excursion    – Diver temporary movement away from a reference point   Diver hand signals    – Hand signals used for communication with divers   Diver lift    – Movable platform for lifting  a diver from the water to deck level   Diver lock-out compartment    – Airlock used for underwater access to a submarine   Diver lock-out submersible    – Manned submersible with an airlock for underwater use   Diver medical technician    – Paramedic with special training in diving medical emergencies   Diver navigation    – Underwater navigation by scuba divers   Diver organisations    – Membership organisations of underwater divers   Diver propulsion vehicle   ( DPV )   – Powered device for diver mobility and range extension   Diver rescue    – Rescue of a distressed or incapacitated diver   Diver safety    – Risk management by and for the diver   Diver searches    – Underwater searches carried out by divers.   Diver sled    – Unpowered steerable creboards towed by a surface boat   Diver surface detection aids    – Equipment to make a surfaced diver easier to find   Diver training    – Processes to develop the skills and knowledge to dive safely underwater   Diver training manual    – Documentary training aid used for training underwater divers   Diver training agency    – Organisation for training and certifying underwater divers   Diver training organisation  , also known as   Diver training organization    – Establishment where divers are trained and assessed   Diver training referral system    – System for allowing training to be completed by another instructor   Diver training standard    – Document describing requirements of a diver training programme   Diver training tank    – Tank of water to practice diving skills   Diver trim    – Balance and orientation skills of an underwater diver   Diver voice communications    – Protocol for spoken communications in diving operations   Diver voice communication protocol    – Procedures for effective communication with divers   Diver weighting system    – Ballast carried by underwater divers to counteract buoyancy   Diver's air pump    – Manually powered surface air supply for divers   Divers Academy International    – Technical educational institution in New Jersey that offers training in commercial diving   Divers Alert Network   ( DAN )   – Group for improving diving safety   Divers Alert Network America    – A not-for-profit diving safety organization based in the US   Divers Alert Network Asia-Pacific    – A not-for-profit diving safety organization based in Australia   Divers Alert Network Europe    – A not-for-profit diving safety organization based in Europe   Divers Alert Network publications    Divers Alert Network Southern Africa   ( DAN-SA )   – A public benefit diving safety organization based in South Africa   Diver's attendant    – Assistant for a diver   Diver's cutting tool    – A tool to assist in extricating the diver from entrapment by lines or nets   Diver's harness    – Item fastened around a diver which allows the diver to be lifted   Divers Institute of Technology    – Private, commercial educational institution for the training of commercial divers   Diver's knife    – A tool to assist in extricating the diver from entrapment by lines or nets   Diver's logbook    – Record of diving history of an underwater diver   Diversnight    – Annual night diving festival   Diver's pump    – Manually powered surface air supply for divers   Diver's safety harness    – Harness suitable for lifting a diver out of the water   Diver's telephone    – Hard wired diver communications equipment   Diver's tender    – Assistant to a diver   Diver's umbilical    – Hose supplying breathing gas to a diver from the support platform   Divex    – Scottish provider of diving equipment and related services   Diviac    – Online booking site for diving holidays   Diving accident    – Accident occurring while diving underwater   Diving accident investigation    – Forensic investigation into causes of reportable incidents   Diving activities    – Things people do while diving underwater   Diving air compressor  , also known as   diving compressor    – Machine used to compress breathing air for use by underwater divers   Diving air compressor operator    – Person who operates a diving air compressor   Diving air filter    – Device to purify compressed breathing air   Diving air pump    – Manually powered surface air supply for divers   Diving at altitude    – Diving where surface pressure is equivalent to an altitude more than 300m   Diving attendant    – Member of a dive team responsible for assisting the diver   Diving at Work Regulations 1997    – UK legislation regulating all aspects of professional diving   Diving basket    – Platform for lowering and lifting a diver through the water   Diving bell    – Chamber for transporting divers vertically through the water   Diving bell cross-haul system  , also known as   diving bell cross-hauling system    – Cables to move a bell laterally under the water   Diving bell deployment    – Deployment of a modern diving bell   Diving boat    – Boat used for the support of scuba diving operations   Diving buddy    – Diver who dives as one of a buddy pair   Diving certification    – Evidence of having been trained to a standard   Diving chamber    – Hyperbaric pressure vessel for human occupancy used in diving operations   Diving chamber operation    – Operation of a hyperbaric chamber in support of underwater diving   Diving compass    – Compass intended for diver navigation   Diving contractor    – The legal persona responsible for professional diving operations for a client   Diving control board    – Group with responsibility for all scientific diving work done by an American organisation   Diving cylinder    – Container to supply high pressure gas for diving operations   Diving cylinder sustained load cracking    – Tensile stress failure of aluminium diving cylinders   Diving destination    – Places where recreational divers go on vacation   Diving Diseases Research Centre   ( DDRC )   Diving disorders    – Physiological disorders resulting from underwater diving   Diving emergency    – Situation that endangers the life or health of a diver   Diving environment    – Characteristics of the environment in which underwater diving takes place   Diving equipment    – Equipment used to facilitate underwater diving   Diving Equipment and Marketing Association   ( DEMA )   – International trade association for the recreational diving equipment industry   Diving equipment maintenance and testing    – Ensuring that the equipment is safe to use   Diving equipment technician    – Person who maintains, repairs and tests diving and support equipment   Diving fatalities    – Deaths associated with underwater diving   Diving flag    – Flag signal indicating divers are in the water nearby   Diving gas    – Gas used by underwater divers, usually for breathing   Diving gas analysis    – Measuring the components in a breathing gas blend   Diving gas mixture    – Mixture of gases suitable for hyperbaric respiration   Diving glove    – Hand protection worn while driving   Diving half-mask    – Mask covering the nose and eyes of an underwater diver   Diving hand signals    – A form of sign system used to communicate underwater   Diving harness    – Item fastened around a diver which allows the diver to be lifted   Diving hazards    – Agents and situations that pose a threat to the underwater diver   Diving heavy    – Underwater diving while intentionally negatively buoyant   Diving helmet    – Rigid head enclosure for underwater diving   Diving incident and accident investigation    – Forensic investigation of underwater diving accidents   Diving in cold water    – Diving in water where heat loss is a serious problem   Diving in cool water    – Conditions where heat loss is easily managed   Diving in freezing water    – Diving in water temperatures near freezing point   Diving in hot water    – Diving in conditions where active cooling is necessary   Diving instructor    – Person who trains and assesses underwater divers   Diving Instructor    – Person who trains and assesses underwater divers   Diving instrument console    – Mounting for a group of scuba diving instruments   Diving in warm water    – Diving in conditions where no thermal protection is needed   Diving jackstay    – Form of guideline laid between two points to guide the diver   Diving jargon    – Definitions of jargon, diver slang and acronyms used in underwater diving   Diving ladder    – Ladder to facilitate egress from the water by divers   Diving law    – Laws directly affecting diving activities   Diving legislation    – Legislation directly affecting diving activity   Diving light    – Portable light source for use underwater   Diving line signals    – Standard signals coded in the form of tugs on the diver's lifeline   Diving locations    – Places that divers go to enjoy the underwater environment   Diving logbook    – Record of diving history of an underwater diver   Diving mask    – Face cover to improve underwater vision   Diving mask clearing    – Removing water from a flooded diving mask underwater   Diving Medical Advisory Council   ( DMAC )   – Independent organisation of diving medical specialists from Northern Europe   Diving medical examination    – Assessment of medical fitness to dive   Diving medical examiner    – A medical practitioner registered to assess medical fitness to dive   Diving Medical Examiner    – A medical practitioner registered to assess medical fitness to dive   Diving medical practitioner    – Specialist in diagnosis, treatment and prevention of disorders caused by underwater diving   Diving Medical Practitioner    – Specialist in diving medicine   Diving medical technician    – Person trained in advanced first aid for divers   Diving Medical Technician    – Person trained in advanced first aid for divers   Diving medicine    – Diagnosis, treatment and prevention of disorders caused by underwater diving   Diving Medicine Physician    – Doctor registered as competent to manage diving accidents   Diving mode    – The conceptual variations of underwater diving   Diving operation    – Underwater dive and support activities to achieve a specific goal   Diving operations record    – Documentation recording a professional dive   Diving physics    – Aspects of physics which affect the underwater diver   Diving physiology    – Influences of the underwater environment on the physiology of human divers   Diving platform (scuba)    – Low freeboard platform on a dive boat to give divers easy access to the water   Diving procedures    – Standardised methods of doing things that are known to work effectively and acceptably safely   Diving project    – The overall diving job by a diving contractor under a specific contract   Diving rebreather    – Closed or semi-closed circuit scuba   Diving reflex    – Physiological responses to immersion of air-breathing vertebrates   Diving regulations    – Stipulations of the delegated legislation regarding the practice of underwater diving   Diving regulator    – Mechanism that controls the pressure of a breathing gas supply for diving   Diving regulator clearing    – Removal of water from a scuba regulator mouthpiece   Diving regulator malfunction    – Failure modes of breathing gas control valves for underwater diving   Diving response    – The physiological responses to immersion of air-breathing vertebrates   Diving safety    – Risk management of underwater diving activities   Diving safety equipment    – Equipment used to facilitate underwater diving safety   Diving safety harness    – A harness by which the diver can safely be lifted   Diving safety officer    – Administrator of a US university's research diving safety program   Diving school    – Establishment for training and assessing underwater divers   Diving Science and Technology   ( DSAT )   – PADI affiliate and developer of recreational decompression planning tools   Diving shot  , also known as   shot line    – Substantial weighted near-vertical line with buoy   Diving signal    – Signals made by divers for communication   Diving skins    – Suit worn to protect the skin from jellyfish stings, abrasion and sunburn   Diving spread    – The topside base for commercial diving operations   Diving stage    – Platform on which a diver is transported vertically through the water   Diving stage deployment    – Launch and recovery of a diving stage   Diving suit    – Garment or device designed to protect a diver from the underwater environment   Diving suit hood    – Protective headgear worn by underwater diver   Diving superintendent    – A management position responsible for diving operations   Diving supervisor    – Professional diving team leader responsible for safety   Diving support equipment    – Equipment used in the support of an underwater diving operation   Diving support personnel    – People involved in the support of diving operations   Diving support vessel    – Ship used as a floating base for professional diving projects   Diving systems technician    – A competent person who maintains and repairs diving life-support equipment   Diving team    – Group of people working together to enhance dive safety and achieve a task   Diving team tools and equipment    – Equipmemt shared by the members of a diving team   Diving terminology    – Definitions of technical terms, jargon, diver slang and acronyms used in underwater diving   Diving terms    – Definitions of technical terms, jargon, diver slang and acronyms used in underwater diving   Diving theory    – The knowledge required for safe diving   Diving tourism    – Tourism focused on recreational diving activities   Diving tourism industry    – Industry based on recreational diver travel   Diving Unlimited International    – American manufacturer of dry suits and other diving equipment   Diving watch    – Watch designed for underwater diving   Diving weight    – Ballast carried by a diver to counteract buoyancy or adjust trim   Diving weight harness    – Diver ballast system supported by straps over the shoulders   Diving weighting system    – Ballast carried to counteract buoyancy  This page is based on this 
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