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Instrument to calculate decompression status in real time
A dive computer, personal decompression computer or decompression meter is a device used by an underwater diver to measure the elapsed time and depth during
Dive_computer
Watch designed for underwater diving
diver's watch has been superseded by the personal dive computer, which provides an automatically initiated dive timer function along with real-time decompression
Diving_watch
Swimming underwater, breathing gas carried by the diver
purpose of the dive, which may include a snorkel when swimming on the surface, a cutting tool to manage entanglement, lights, a dive computer to monitor decompression
Scuba_diving
Techniques and procedures for safe decompression of divers
rate earlier in the dive, and the bottom time must be reduced accordingly. In the case of real-time monitoring by dive computer, descent rate is not
Decompression_practice
Diver's pressure exposure over the time of a dive
personal dive computer. Several common types of dive profile are specifically named, and these may be characteristic of the purpose of the dive. For example
Dive_profile
breathing apparatus and diving equipment Aqwary – Dive computers. L.G. Arpin Company Divair scuba regulators. Atmos – Dive computers. Atomic aquatics – Scuba
List of diving equipment manufacturers
List_of_diving_equipment_manufacturers
Disorder caused by dissolved gases forming bubbles in tissues
prevent it, and divers almost universally use decompression schedules or dive computers to limit their exposure and to monitor their ascent speed. If DCS is
Decompression_sickness
Tabulated data to facilitate safe diving ascents
reduce risk or improve decompression efficiency. The availability of dive computers which can apply algorithms in real time to calculate the personal decompression
Decompression_tables
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
Origins and development of diving using breathing gas carried by the diver
safe use of dive computers that was generally accepted by the scuba diving community, and consequently the opposition to dive computers dissipated, numerous
History_of_scuba_diving
Mathematical model of tissue inert gas uptake and release with pressure change
decompression tables and in personal dive computers to compute no-decompression limits and decompression schedules for dives in real-time, allowing divers to
Bühlmann decompression algorithm
Bühlmann_decompression_algorithm
Equipment used by divers to facilitate decompression
particular dive profile, decompression tables for more general use, or be implemented in dive computer software. During the 1980s the US recreational diving community
Decompression_equipment
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
Underwater diving without breathing apparatus
Freediving, free-diving, free diving, breath-hold diving, or skin diving is a mode of underwater diving that relies on breath-holding (apnea) until resurfacing
Freediving
Ship used as a floating base for professional diving projects
utility ships. The key components of the diving support vessel are: Dynamic Positioning – Controlled by a computer with input from position reference systems
Diving_support_vessel
Semi-submersible offshore drilling rig
decompression in 1983 that killed four divers and one dive tender, as well as critically injuring another dive tender. Built as Deep Sea Driller, Byford Dolphin
Byford_Dolphin
Scuba set with variable-density buoyancy control
Shearwater Air Integrated Dive Computers". shearwater.com. Retrieved 7 April 2025. "Shearwater unveils Jetpack for Avelo diving". Dive Magazine. 9 June 2025
Avelo_diving_system
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
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
Hyperbaric pressure vessel for human occupancy used in diving operations
A diving chamber is a vessel for human occupation, which may have an entrance that can be sealed to hold an internal pressure significantly higher than
Diving_chamber
Diving incident in the Maldives
The 2026 Dhekunu Kandu cave diving incident was a cave diving incident that occurred on 14 May 2026 at the Dhekunu Kandu cave, also known as the Devana
2026 Dhekunu Kandu cave diving incident
2026_Dhekunu_Kandu_cave_diving_incident
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
Decompression model and algorithm based on bubble physics
have been used in mobile and desktop dive planning software and in dive computers. The VPM presumes that microscopic bubble nuclei always exist in water
Varying_Permeability_Model
British ocean liner (1907–1915)
enclosed stairs, and a dive chamber at the bottom would be floated out over the Lusitania wreck and then sunk upright, with the dive chamber resting on the
RMS_Lusitania
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
Diving for the purpose of leisure and enjoyment
Recreational diving or sport diving is diving for the purpose of leisure and enjoyment, usually when using scuba equipment. The term "recreational diving" may
Recreational_diving
Chamber for transporting divers vertically through the water
A diving bell is a rigid chamber used to transport divers from the surface to depth and back in open water, usually for the purpose of performing underwater
Diving_bell
Line of smartwatches
release the subscription-based “Oceanic Plus” app for more advanced dive computer functionality. The first-generation Apple Watch Ultra was unveiled September
Apple_Watch_Ultra
Australian conservationist (1962–2006)
Standard diving helmet Diving mask Band mask Full-face diving mask Half mask Instrumentation Bottom timer Depth gauge Dive computer Dive timer Diving watch
Steve_Irwin
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
Crewed full ocean depth rated submersible
research organization. It currently holds the records for the deepest crewed dives in all five oceans. Limiting Factor was commissioned by Victor Vescovo for
DSV_Limiting_Factor
Descending below the surface of the water to interact with the environment
source, buddy checks, buddy or team diving procedures, dive planning, use of dive computers to monitor and record the dive profile and decompression status
Underwater_diving
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 manufacturers
Diving_rebreather
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
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 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
Pressure reduction and its effects during ascent from depth
likely to occur for a given dive profile. Algorithms based on these models produce decompression tables. In personal dive computers, they produce a real-time
Decompression_(diving)
Australian technical diver (1954–2005)
The Mk15.5 was his rebreather of choice for dives deeper than 150 metres (500 ft). For extended dives in caves shallower than 150 m,[citation needed]
Dave_Shaw
British science fiction writer (1917–2008)
second diving book after the 1956 The Coast of Coral. Though Clarke lived mostly in Colombo, he set up a small dive school and a simple dive shop near
Arthur_C._Clarke
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)
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)
Outcrop of rock in the sea formed by the growth and deposit of stony coral skeletons
coral-counting technology using a prototype robotic camera. The camera uses computer vision and machine learning algorithms to detect and count individual coral
Coral_reef
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
American recreational scuba equipment manufacturer
Leandro, California, United States. Its products include dive computers, rebreathers and a novel diving mask incorporating a heads-up-display of information
Oceanic_Worldwide
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
Human body core temperature below 35 °C (95 °F)
Accidental Hypothermia during Diving. US Navy Experimental Diving Unit Technical Report (Report). Navy Experimental Diving Unit Panama City Fla. Archived
Hypothermia
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
Irish safety freediver (1977-2017)
he attained his career-best dive with a monofin to 81 metres (267 feet). On 22 July 2017, Keenan died while assisting a dive by Alessia Zecchini. Zecchini
Stephen_Keenan
Submersible that traveled to the Challenger Deep
James Cameron piloted the craft to accomplish this goal in the second crewed dive reaching the Challenger Deep. Built in Sydney, Australia, by the research
Deepsea_Challenger
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
Flag signal indicating divers are in the water nearby
safety of the diver and to avert the possibility of a collision with the dive boat which may be unable to maneuver out of the way. As a code signal the
Diver_down_flag
Change in sea level due to gravity
Decompression trapeze Dive computer Diving bell Diving shot Diving stage Jersey upline Jonline Diving suit Atmospheric diving suit JIM suit Newtsuit
Tide
USMC deep reconnaissance unit
Rope Suspension Technique (HRST) Master Course – minimum two per platoon Dive Supervisor Course – minimum two per platoon LAR V Technician Course – two
United States Marine Corps Force Reconnaissance
United_States_Marine_Corps_Force_Reconnaissance
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
Underwater diving at altitudes above 300 m
conservative method for measurement of compensated depth at altitude. Modern dive computers detect changes in altitude or accept it as a user input and automatically
Altitude_diving
Female divers of Jeju, South Korea
a haenyeo consist of a wetsuit, diving mask, fins, gloves, chest weights (or freediving weight belts, to assist diving), an L-shaped weeding hoe, and a
Haenyeo
Theoretical modelling of decompression physiology
Europe members. The Diving Safety Laboratory is a database to which members can upload dive profiles from a wide range of dive computers converted to a standard
Decompression_theory
Underwater diving where divers are paid for their work
Professional diving is underwater diving where the divers are paid for their work. Occupational diving has a similar meaning and applications. The procedures
Professional_diving
Instrument that indicates depth below a reference surface
bottom timer. An electronic depth gauge is an essential component of a dive computer. As the gauge only measures water pressure, there is an inherent inaccuracy
Depth_gauge
Decompression table for divers
profile dive where the diver spends the entire dive at one depth. Although this is much more conservative, dive computers provide much more dive time and
Recreational_Dive_Planner
Face cover to improve underwater vision
A diving mask (also half mask, free-diving mask, snorkelling mask or scuba mask) is an item of diving equipment that allows underwater divers, including
Diving_mask
Procedures for safe ascent and descent in underwater diving
rate of descent other than the depth gauge or dive computer carried by the diver. Scuba divers often dive in buddy pairs for safety reasons, and if following
Ascending and descending (diving)
Ascending_and_descending_(diving)
Canadian manufacturer of dive computers and rebreather electronics
Shearwater Research is a Canadian manufacturer of dive computers and rebreather electronics for technical diving. In 2004, Shearwater Research was founded by
Shearwater_Research
French oceanographer and author (1910–1997)
first wife). The years of World War II were decisive for the history of diving. After the armistice of 1940, the family of Simone and Jacques-Yves Cousteau
Jacques_Cousteau
Hunting for fish using a spear
precludes catch and release. Spearfishing may be done using free-diving, snorkelling, or scuba diving techniques, but spearfishing while using scuba equipment
Spearfishing
Diving under a physical barrier to a direct vertical ascent to the surface
safety of breathable atmosphere at the surface. Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater
Penetration_diving
List of terms used in underwater diving and their meanings in context
schedules for scuba divers engaged in deep diving without using dive tables, decompression software or a dive computer. RDP Subsection: Top, Ra, Re, Ri, Ro
Glossary of underwater diving terminology: P–S
Glossary_of_underwater_diving_terminology:_P–S
Elevated body temperature due to failed thermoregulation
Standard diving helmet Diving mask Band mask Full-face diving mask Half mask Instrumentation Bottom timer Depth gauge Dive computer Dive timer Diving watch
Hyperthermia
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
Powered device for diver mobility and range extension
armed forces, is a compact underwater propulsion device, usually used as a diving equipment by scuba divers to increase range underwater. Range is restricted
Diver_propulsion_vehicle
2006 animal encounter accident
Standard diving helmet Diving mask Band mask Full-face diving mask Half mask Instrumentation Bottom timer Depth gauge Dive computer Dive timer Diving watch
Death_of_Steve_Irwin
Pirate Blackbeard's ship
(1982). East Carolina Dive and Historical Recovery Team, Beaufort Inlet and Oregon Inlet Surveys, 1982 Field Reports. East Carolina Dive and Historical Recovery
Queen_Anne's_Revenge
Multinational technology company
inReach: the inReach SE+ and Explorer+. In 2017, Garmin released its first dive computer with surface GPS, the Descent Mk1. The Mk1 also provided an altimeter
Garmin
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
Boat used for the support of scuba diving operations
A dive boat is a boat that recreational divers or professional scuba divers use to reach a dive site which they could not conveniently reach by swimming
Dive_boat
Professional diving on industrial projects
Commercial diving may be considered an application of professional diving where the diver engages in underwater work for industrial, construction, engineering
Commercial_diving
Forensic investigation of underwater diving accidents
Investigation of diving accidents includes investigations into the causes of reportable incidents in professional diving and recreational diving accidents,
Investigation of diving accidents
Investigation_of_diving_accidents
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
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
Tactical scuba diver
A frogman is someone who is trained in scuba diving or swimming underwater. The term often applies more to professional rather than recreational divers
Frogman
Injury due to pressure difference between gas filled space and adjoining tissue
(the under-pressure air space is inside the diving mask or swimming goggles) Skin (when wearing a diving suit which creates an air space) Brain and cranium
Barotrauma
Indian Navy special operations force
Special Operations Division. In 1955, the Indian military established a diving school at Cochin with the assistance of the British Special Boat Service
MARCOS
Physiological response to sudden exposure to cold
conflict – sympathetic (due to stress) and parasympathetic (due to the diving reflex) coactivation – may be responsible for some cold water immersion
Cold_shock_response
Austrian freediver and world record holder
freediving world record champion, and "the deepest man on earth" having dived to a depth of 253.2 meters (831 feet). Nitsch has held 33 world records
Herbert_Nitsch
an open diving bell which can be filled with air for divers to breathe, also known as a canopy. air integration Feature of some dive computers to measure
Glossary of underwater diving terminology: A–C
Glossary_of_underwater_diving_terminology:_A–C
German filmmaker (1902–2003)
Hinton 2000, p. 21. Brooks, Xan (29 August 2024). "Riefenstahl review – deep-dive study takes down the Nazis' favourite director. Venice film festival 2024"
Leni_Riefenstahl
Record of diving history of an underwater diver
Name and signature of the diving supervisor for the dive Diving contractor's official company stamp Usually dive computer manufactures have their own
Dive_log
Free-diving self-propelled deep-sea submersible
A bathyscaphe (/ˈbæθɪˌskeɪf, -ˌskæf/) is a free-diving, self-propelled deep-sea submersible, consisting of a crew cabin similar to a bathysphere, but suspended
Bathyscaphe
Swimming while inhaling through a snorkel
through a shaped tube called a snorkel, usually with swimming goggles or a diving mask, and swimfins. In cooler waters, a wetsuit is also worn. The use of
Snorkeling
Short circular highly elastic rubber loop
the ingress of water, holding kneepads and elbow pads in place or securing dive lines to small rocks. and have been used for first aid for strapping injured
Rubber_band
Stretch garment for protection from abrasion, UV and stings
weather for many other watersports including surfing, canoe polo, scuba diving, snorkeling, freediving, wakeboarding, bodysurfing, bodyboarding, windsurfing
Rash_guard
Organ system for circulating blood in animals
Standard diving helmet Diving mask Band mask Full-face diving mask Half mask Instrumentation Bottom timer Depth gauge Dive computer Dive timer Diving watch
Circulatory_system
US government scientific agency
Aviation Operations is responsible for the fleet of NOAA ships, aircraft, and diving operations. It is the largest research fleet in the Federal government.
National Oceanic and Atmospheric Administration
National_Oceanic_and_Atmospheric_Administration
Special forces unit of the Royal Navy
(32 km) canoe paddle Diving phase (1 week) Complete a number of dives with confidence and willingness Learn and demonstrate diving drills with sufficient
Special_Boat_Service
Crewed deep-ocean research submersible
The vessel weighs 17 tons. It allows for two scientists and one pilot to dive for up to nine hours at 6,500 metres (21,300 ft). The submersible features
DSV_Alvin
French diver and cinematographer (1940–1979)
nominated for and won several awards. Born in Toulon, Philippe Cousteau first dived with an aqua-lung in 1945 when he was 4 years old. His father brought home
Philippe_Cousteau
American engineer, vintner, and former NASA astronaut
In 1986, Hernández earned a Master of Science degree in electrical and computer engineering from the University of California, Santa Barbara. While in
José_M._Hernández
American engineer, astronaut, and naval aviator (born 1964)
4 mi offshore from Key Largo. The NEEMO 4 crew spent five days saturation diving from Aquarius as a space analog for working and training under extreme environmental
Scott_Kelly_(astronaut)
Process of planning an underwater diving operation
Dive planning is the process of planning an underwater diving operation. The purpose of dive planning is to increase the probability that a dive will be
Dive_planning
Jacques Cousteau's oceanographic research ship
and transformed the ship into an expedition vessel and support base for diving, filming and oceanographic research. One of the more unusual expeditions
RV_Calypso
DIVE COMPUTER
DIVE COMPUTER
Girl/Female
Celtic
Divine one.
Surname or Lastname
English
English : from Middle English dove, Old English dÅ«fe ‘dove’ (or perhaps occasionally from the Old Norse cognate dúfa), applied as a nickname for a mild and gentle person or as a metonymic occupational name for a keeper of doves. The Old English word was used as a personal name for either sex in the early Middle English period, and the surname at least in part derives from this use.Scottish : translation of Mac Calmáin (see Coleman 1).Scottish : variant of Duff.North German : nickname for a deaf or dull man, Middle Low German dÅf.David James Dove was born about 1696 in Portsmouth, England, where his father was a tailor. He arrived with his wife in Philadelphia in 1750 and in 1751 opened an academy for young ladies. He was the first person in PA who attempted to supply higher education for women.
Boy/Male
Hindu
Variant of David beloved
Surname or Lastname
English
English : from Middle English dyse, dyce ‘die’, ‘dice’, ‘chance’, ‘luck’, probably applied as a nickname for an habitual dice player or gambler or as a metonymic occupational name for a maker of dice. Compare Deas.Possibly also an Americanized spelling of German Deiss.
Girl/Female
Hindu, Indian, Sanskrit
Divine; The Heaven
Female
Yiddish
Yiddish form of Hebrew Diynah, DINE means "judgment."
Female
English
Anglicized form of Irish Gaelic Sadhbh, SIVE means "sweet."
Boy/Male
Hebrew American Scottish Welsh
Cherished; Beloved.
Girl/Female
Indian
Gift of God, Powerful women
Boy/Male
British, English
Wealthy Man
Surname or Lastname
Irish (County Donegal)
Irish (County Donegal) : Anglicized form of Gaelic Ó Duibhidhir or sometimes of Mac Duibhidhir (see Dwyer, also Dyer).English : of uncertain derivation; possibly from diver, an agent derivative of Middle English dive ‘to dip or plunge’, but if so the application is obscure. It may be a nickname for someone compared to a diving bird. Compare Ducker.
Girl/Female
Greek
Justice.
Boy/Male
Hindu
Laukik
Girl/Female
Indian
Search
Girl/Female
Irish
Good.
Girl/Female
French, German, Hebrew, Swedish
Vindicated; Judgment
Male
English
English short form of Hebrew David, DAVE means "beloved."
Girl/Female
French Latin
From the shore.
Surname or Lastname
English
English : variant spelling of Dyke.
Girl/Female
Greek
Justice.
DIVE COMPUTER
DIVE COMPUTER
Boy/Male
Indian
Nature Smile
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Dream Swapna
Boy/Male
Tamil
Balagovind | பாலகோவிஂத
Young cow-herd, Infant Krishna
Girl/Female
Irish
Name of a saint.
Surname or Lastname
English
English : variant of Harbison.
Surname or Lastname
German
German : ethnic name for someone from Flanders, Middle High German vlaeminc. People from Flanders spread throughout Germany, as well as England, in the Middle Ages as clothmakers and dyers.English : variant spelling of Fleming.
Girl/Female
Tamil
Awakening
Boy/Male
Indian
Winning Self
Boy/Male
Hindu, Indian, Marathi, Sanskrit
Humble; Request
Boy/Male
Hungarian
God bless the King.
DIVE COMPUTER
DIVE COMPUTER
DIVE COMPUTER
DIVE COMPUTER
DIVE COMPUTER
n.
To pledge; as, to give one's word.
pl.
of Dice
v. i.
To give a gift or gifts.
n.
The bees of one hive; a swarm of bees.
v. t.
To collect into a hive; to place in, or cause to enter, a hive; as, to hive a swarm of bees.
n.
To excite or cause to exist, as a sensation; as, to give offense; to give pleasure or pain.
v. t.
To drain by a dike or ditch.
v. t.
To dine upon; to have to eat.
n.
Small cubes used in gaming or in determining by chance; also, the game played with dice. See Die, n.
v. t.
To give a dinner to; to furnish with the chief meal; to feed; as, to dine a hundred men.
imp. & p. p.
of Dive
superl.
Ill-boding; portentous; as, dire omens.
pl.
of Die
a.
Being in a state of ignition; burning; having active properties; as, a live coal; live embers.
n.
One who, or that which, dives.
v. t. & i.
To give.
n.
A plunge headforemost into water, the act of one who dives, literally or figuratively.
v. i.
To play games with dice.