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Aqua Lung Divers
U.S. Divers vs Aqua Lung vs other brands for snorkeling?

Even though U.S. Divers is owned by Aqua Lung, they both manufacture snorkeling stuff. So which one is better than the other, in regards of masks, snorkels and fins? Any other brand that I should consider?

I happen to have both US diver and Aqua lung snorkeling sets. I recently went snorkeling with both brands, and both worked excellent. The US divers set i borrowed from a friend. This particular set was about 5 years old. It worked well, but over time, the seal in the goggle gave out. My Aqua lung set is good, but expensive. The Aqua lung Flippers work awesome! Great fit. Either set will work very well. If your going to spend a lot of money, definitely get one of these brands.

Timeline Of Diving Technology

Pre-industrial

Several centuries BC: (Relief carvings made at this time show Assyrian soldiers crossing rivers using inflated goatskin floats. Several modern authors have wrongly said that the floats were crude breathing sets and that they show frogmen in action.)

Ancient Roman and Greek times, etc.: There have been many instances of men swimming or diving for combat, but they always had to hold their breath, and had no diving equipment, except sometimes a hollow plant stem used as a snorkel. See this link (in Portuguese).

About 500 BC: (Information originally from Herodotus): During a naval campaign the Greek Scyllis was taken aboard ship as prisoner by the Persian King Xerxes I. When Scyllis learned that Xerxes was to attack a Greek flotilla, he seized a knife and jumped overboard. The Persians could not find him in the water and presumed he had drowned. Scyllis surfaced at night and made his way among all the ships in Xerxes's fleet, cutting each ship loose from its moorings; he used a hollow reed as snorkel to remain unobserved. Then he swam nine miles (15 kilometers) to rejoin the Greeks off Cape Artemisium.

The use of diving bells is recorded by the Greek philosopher Aristotle in the 4th century BC: "...they enable the divers to respire equally well by letting down a cauldron, for this does not fill with water, but retains the air, for it is forced straight down into the water."

1300 or earlier: Persian divers were using diving goggles with windows made of the polished outer layer of tortoiseshell.

15th century: Leonardo da Vinci made the first known mention of air tanks in Italy: he wrote in his Atlantic Codex (Biblioteca Ambrosiana, Milan) that systems were used at that time to artificially breathe under water, but he did not explain them in detail due to what he described as "bad human nature", that would have taken advantage of this technique to sink ships and even commit murders. Some drawings, however, showed different kinds of snorkels and an air tank (to be carried on the breast) that presumably should have no external connections. Other drawings showed a complete immersion kit, with a plunger suit which included a sort of mask with a box for air. The project was so detailed that it included a urine collector, too.

1531: Guglielmo de Lorena dives on two of Caligula's sunken galleys using a diving bell from a design by Leonardo da Vinci.

1616: Franz Kessler built an improved diving bell.

Around 1620: Cornelius Drebbel may have made a crude rebreather: see Rebreather#History of rebreathers.

1650: Otto von Guericke built the first air pump.

1772: Sieur Freminet tried to build a scuba device out of a barrel, but died from lack of oxygen after 20 minutes, as he merely recycled the exhaled air untreated.

1776: David Bushnell invented the Turtle, first submarine to attack another ship. It was used in the American Revolution.

19th century

1800: Robert Fulton builds a submarine, the "Nautilus"

Diving helmets appear

1808: Brize-Fradin designed a small bell-like helmet connected to a low-pressure backpack air container .

1820: Paul Lemaire d'Augerville (a Parisian dentist) invented and made a diving apparatus with a copper backpack cylinder, and with a counter-lung to save air, and with an inflatable lifejacket connected. It was used down to 15 or 20 meters for up to an hour in salvage work. He started a successful salvage company .

1825: William H. James designed a self contained diving suit that had compressed air in an iron container worn around the waist.

1827: Beaudouin in France developed a diving helmet fed from an air cylinder pressurized to 80 to 100 bars. The French Navy was interested, but nothing came of this.

1829: Charles Anthony Deane and John Deane of Whitstable in Kent in England design the first air-pumped diving helmet for use with a diving suit. It is said that the idea started from a crude emergency rig-up of a fireman's water-pump (used as an air pump) and a knight-in-armour helmet used to try to rescue horses from a burning stable. Others say that it was based on earlier work in 1823 developing a "smoke helmet". However the suit was not attached to the helmet, so a diver could not bend over or invert without risk of flooding the helmet and drowning. Nevertheless, the diving system is used in salvage work, including the successful removal of cannon from the British warship HMS Royal George in 1834-35. This 108-gun fighting ship sank in 65 feet of water at Spithead anchorage in 1783.

1829: E.K.Gauzen, a Russian naval technician of Kronshtadt naval base (a district of Saint Petersburg), offers a "diving machine". His invention was an air-pumped metallic helmet strapped to a leather suit (an overall). The bottom of the helmet is open. The helmet is strapped to the leather suit by metallic tape. Gauzen's diving suit and its further modifications were used by the Russian Navy until 1880. The modified diving suit of the Russian Navy, based on Gauzen's invention, was known as "three-bolt equipment".

1837: Following up Leonardo's studies, and those of Halley the astronomer, Augustus Siebe develops standard diving dress, a sort of surface supplied diving apparatus.

1837 By attaching the Deane brothers helmet to a suit, Augustus Siebe develops the Siebe "Closed" Dress combination diving helmet and suit, considered the foundation of modern diving dress. This was a significant evolution from previous models of "open" dress that did not allow a diver to invert. (Siebe-Gorman went on to manufacture helmets continuously until 1975).

The first diving regulator

1838: Dr. Manuel Guillaumet invented a twin-hose demand regulator. It was demonstrated used as surface-demand. Use duration was limited to 30 minutes by diving in cold water without a diving suit.

1839 Canadian inventors James Eliot and Alexander McAvity of Saint John, New Brunswick patent an "oxygen reservoir for divers", a device carried on the diver's back containing "a quantity of condensed oxygen gas or common atmospheric air proportionate to the depth of water and adequate to the time he is intended to remain below".

1839: W.H.Thornthwaite of Hoxton in London patented an inflatable lifting jacket for divers .

Around 1842: The Frenchman Joseph Cabirol starts making standard diving dress.

1843: Based on lessons learned from the Royal George salvage, the first diving school is set-up by the Royal Navy.

1849: Saint-Simon-Sicard (a chemist) made the first practical oxygen rebreather. It was demonstrated in London in 1854 .

1856: Wilhelm Bauer starts the first of 133 successful dives with his second submarine Seeteufel. The crew of 12 was trained to leave the submerged ship through a diving chamber.

1860: Giovanni Luppis, a retired engineer of the Austro-Hungarian navy, demonstrates a design for a self-propelled torpedo to emperor Franz Joseph.

1863: H.L. Hunley becomes the first submarine to sink a ship, the USS Housatonic, during the American Civil War.

Diving set by Rouquayrol and Denayrouze with barrel-shaped bailout air tank on the diver's back

1865: Benoit Rouquayrol and Auguste Denayrouze design a diving set with a backpack spherical air tank that supplied air through the first known demand regulator. The diver still walked on the seabed and did not swim. This set was called an arophore (Greek for "air-carrier"). But air pressure tanks made with the technology of the time could only hold 30 atmospheres, and the diver had to be surface supplied; the tank was for bailout. The durations of 6 to 8 hours on a tankful without external supply recorded for the Rouquayrol set in the book Twenty Thousand Leagues Under the Sea by Jules Verne, are wildly exaggerated fiction. Judging by Jules Verne's inaccurate attempts in the book at describing how the Rouquayrol set worked, how the demand regulator works was not generally known or had already been forgotten when he wrote the book, which was published in 1870. But Jules Verne knew about the tendency of some divers, when surfacing into rain, to want to stay underwater to keep out of the rain.

1866: Minenschiff, the first self-propelled (locomotive) torpedo, developed by Robert Whitehead (to a design by Captain Luppis, Austrian Navy), is demonstrated for the imperial naval commission on December 21.

Gas and air cylinders appear

Late 19th century: Industry begins to be able to make high-pressure air and gas cylinders. That prompted a few inventors down the years to design open-circuit compressed air breathing sets, but they were all constant-flow, and the demand regulator did not come back until 1939.

1876: An English merchant seaman, Henry Fleuss, develops the first workable self-contained diving rig that uses compressed oxygen. This prototype of closed-circuit scuba uses rope soaked in caustic potash to absorb carbon dioxide so the exhaled gas can be re-breathed.

1893: Louis Boutan invents the first underwater camera.

Decompression sickness becomes a problem

1841: First documented case of decompression sickness occurs, reported by a mining engineer who observed pain and muscle cramps among coal miners working in mine shafts air-pressurized to keep water out.

1870: Bauer publishes outcomes of 25 paralyzed caisson workers.

From 1870 to 1910 all prominent symptoms/causes will be established: explanations at the time included: cold or exhaustion causing reflex spinal cord damage; electricity caused by friction on compression; or organ congestion and vascular stasis caused by decompression.

1871: The St Louis Eads Bridge employs 352 compressed air workers including Dr. Alphonse Jaminet as the physician in charge. There were 30 seriously injured and 12 fatalities. Dr. Jaminet himself suffered a case of decompression sickness when he ascended to the surface in four minutes after spending almost three hours at a depth of 95 feet in a caisson, and his description of his own experience was the first such recorded.

1872: The similarity between decompression sickness and iatrogenic air embolism as well as the relationship between inadequate decompression and decompression sickness is noted by Friedburg. He suggested that intravascular gas was released by rapid decompression and recommended: slow compression and decompression; four hour working shifts; limit to maximum depth 44.1 psig (4 ATA); using only healthy workers; and recompression treatment for severe cases.

1873: Dr. Andrew Smith first utilizes the term "caisson disease" describing 110 cases of decompression sickness as the physician in charge during construction of the Brooklyn Bridge. The project employed 600 compressed air workers. Recompression treatment was not used. The project chief engineer Washington Roebling suffered from caisson disease. (He took charge after his father John Augustus Roebling died of tetanus.) Washington's wife, Emily, helped manage the construction of the bridge after his sickness confined him to his home in Brooklyn. He battled the after-effects of the disease for the rest of his life. During this project, decompression sickness became known as "The [Grecian] Bends" because afflicted individuals characteristically arched their backs: this is possibly reminiscent of a then fashionable women's dance maneuver known as the Grecian Bend.

1878: Paul Bert Publishes La Pression barometrique, providing the first systematic understanding of the causes of DCS.

20th century

1900: John P. Holland builds the first submarine to be formally commissioned by the U.S. Navy, Holland (also called A-1).

1900: ## Leonard Hill uses a frog model to prove that decompression causes bubbles and that recompression resolves them.

1903: Siebe Gorman starts to make a submarine escape set in England; in the years afterwards it was improved, and later was called the Davis Escape Set or Davis Submerged Escape Apparatus.

1905 Several sources, including the 1991 US Navy Dive Manual (pg 1-8), state that the MK V Deep Sea Diving Dress was designed by the Bureau of Construction & Repair in 1905, but in reality, the 1905 Navy Handbook shows British Siebe-Gorman helmets in use. Since the earliest know MK V is dated 1916, these sources are probably referring to the earlier MK I, MK II, MK III & MK IV Morse and Schrader helmets.

1905: The first rebreather with metering valves to control the supply of oxygen is made.

1907: Draeger of Lbeck makes a rebreather called the U-Boot-Retter. = "submarine rescuer".

1908: ## Arthur Boycott, Guybon Damant, and John Haldane publish "The Prevention of Compressed-Air Illness", detailed studies on the cause and symptoms of decompression sickness, and propose a table of decompression stops to avoid the effects.

1908: ## The Admiralty Deep Diving Committee adopts the Haldane tables for the Royal Navy, and publish Haldane's diving tables to the general public.

1912: ## US Navy adopts the decompression tables published by Haldane, Boycott and Damant. Driven by Chief Gunner George Stillson, the navy sets up a program to test tables and staged decompression based on the work of Haldane.

1913 The Navy also begins developing the future MK V, influenced by Schrader and Morse designs.

1915 The submarine USS F-4 is salvaged from 304 feet establishing the practical limits for air diving. Three US Navy divers, Frank W. Crilley, William F. Loughman, and Nielson, reached 304 fsw using the MK V dress.

1916 With the addition of a battery-powered telephone, the design of the MK V is finalized however, several more design improvements are made over the next two years.

1916: The Draeger model DM 2 becomes standard equipment of the German Navy.

1917 The Bureau of Construction & Repair introduces the MK V helmet and dress, which then becomes the standard for US Navy diving until the introduction of the MK 12 in the late seventies

1918: Ohgushi (he was Japanese) patents "Ohgushi's Peerless Respirator". It was a constant-flow diving and industrial open-circuit breathing set. The user breathed through his nose and switched the air on and off with his teeth.

Around 1920: Hanseatischen Apparatebau-Gesellschaft make a 2-cylinder breathing apparatus with double-lever single-stage demand valve and single wide corrugated breathing tube with mouthpiece, and a "duck's beak" exhalent valve in the regulator. It was described in a mine rescue handbook in 1930. They were successors to Ludwig von Bremen of Kiel, who had the licence to make the Rouquayrol-Denayrouze apparatus in Germany .

1924 Yves le Prieur invented a hand-controlled self-contained underwater breathing apparatus. It delivered air at constant pressure without a demand regulator. He first experimented with it in 1926.

1926: Draeger displayed a rescue breathing apparatus that the wearer could swim with. While the previous devices served only for ascending to the surface and were designed also to develop lift so that the wearer arrived at the surface without swimming movements, the diving set had weights, which also made it possible to dive down with it, to search and save after an accident.

1937: US Navy publishes its revised diving tables based on the work of O.D. Yarbrough.

Swim-diving starts

The 1930s:

In France, Guy Gilpatrick starts swim diving with waterproof goggles, derived from swimming goggles (which were originally intended to keep salt water out of the eyes at the surface).

Sport spearfishing became common in the Mediterranean, and spearfishers gradually developed the common sport diving mask and fins and snorkel, with mostly Georges Beuchat in Marseille, France, which created the speargun and the 1st isothermic wetsuit, and Italian sport spearfishers started using oxygen rebreathers. This practice came to the attention of the Italian Navy, which developed its frogman unit Decima Flottiglia MAS using oxygen rebreathers and manned torpedoes, playing a large role in World War II.

1933:

In France, Louis de Corlieu patents the first swimming swimfins.

In San Diego, California, the first sport diving club is started, called the Bottom Scratchers. As far as it is known, it did not use breathing sets; its main aim was spearfishing.

More is known of Yves Le Prieur's constant-flow open-circuit breathing set. It is said that it could allow a 20 minute stay at 7 meters and 15 minutes at 15 meters. It has one cylinder feeding into a circular fullface mask. Its air cylinder was often worn at an angle to get its on/off valve in reach of the diver's hand; this would have caused an awkward skew drag in swimming.

1934:

In France, establishment of Beuchat, oldest scuba diving and spearfishing company in the world,

In France a sport diving club is started, called the Club des Sous-l'Eau. It did not use breathing sets as far as is known. Its main aim was spearfishing.

Otis Barton and William Beebe dive to 3028 feet using a bathysphere.

1935: The French Navy adopts the Le Prieur breathing set.

1936: On the French Riviera, the first known sport scuba diving club started. It used Le Prieur's breathing sets.

1937: The American Diving Equipment and Salvage Company (now known as DESCO) develops a heavy bottom-walking-type diving suit with a self-contained mixed-gas helium and oxygen rebreather.

1937: ## US Navy publishes its revised diving tables based on the work of O.D. Yarbrough.

1939: Hans Hass developed from the escape set a type of rebreather with its bag on his back and two breathing tubes but no backpack box. These sets appear much in his movies and books.

1954: Underwater hockey (octopush) is invented by four navy sub-aqua divers in Southsea who got bored swimming up and down and wanted a fun way to keep fit.

The diving regulator reappears

1937: Georges Commeinhes developed a two-cylinder open-circuit apparatus with demand regulator. The regulator was a big rectangular box between the cylinders. Some were made, but WWII interrupted development.

World War II

1939: Georges Commeinhes offers his breathing set to the French Navy, which could not continue developing uses for it because of WWII.

July 1943: Commeinhes reached 53 meters (about 174 feet) using his breathing set off the coast of Marseille.

1944: Commeinhes died in the liberation of Strasbourg in Alsace. His invention was submerged by Cousteau's invention.

Christian J. Lambertsen of the United States designed a 'Self-Contained Underwater Oxygen Breathing Apparatus' for the U.S. military. It was a rebreather. It was the first device to be called SCUBA.

Various nations use frogmen equipped with rebreathers for some of the best known and most spectacular war actions: see Human torpedo.

Hans Hass later said that during WWII the German diving gear firm Drger offered him an open-circuit scuba set with a demand regulator. It may have been a separate invention, or it may have been copied from a captured Commeinhes-type set.

1943: Jacques Cousteau and Emile Gagnan invent and make an open-circuit diving breathing set, using a demand regulator which Gagnan modified from a demand regulator used to let a petrol-driven car run on a big bag of coal-gas carried on its roof during wartime shortages of petrol. Cousteau had his first dives with it. He made two more aqualungs: there were now 3, one each for Cousteau and his first two diving companions Frdric Dumas and Taillez. His aqualung remained a secret until the south of France was liberated. This type of breathing set was later named the "Aqua-Lung". This word is correctly a tradename that goes with the Cousteau-Gagnan patent, but in Britain it has been commonly used as a generic and spelt "aqualung" since at least the 1950s, including in the BSAC's publications and training manuals, and describing scuba diving as "aqualunging".

Early 1944: the USA government, to try to stop men from being drowned in sunken army tanks, asked the company Mine Safety Appliances (MSA) for a suitable small escape breathing set. MSA provided a small open-circuit breathing set with a small (5 to 7 liters) air cylinder, a circular demand regulator with a two-lever system similar to Cousteau's design (connected to the cylinder by a nut and cone nipple connection), and one corrugated wide breathing tube connected to a mouthpiece. This set was stated to be made from made from "off-the-shelf" items, which shows that MSA had that regulator design before; also, that regulator looks like the result of development and not a prototype; it may have arisen around 1943. In an example recovered in 2003 form a submerged Sherman tank in the Bay of Naples the cylinder was bound round in tape and tied to a lifejacket. These sets were too late for the D-day landings in June 1944, but were used in the invasion of the south of France and in the South Pacific war.

1944: In October, Frdric Dumas reaches 62 meters (about 200 feet) with a Cousteau aqualung.

1945: Cousteau's first aqualung is destroyed by a mis-aimed artillery shell in an Allied landing on the French Riviera: that left two. Afterwards, he had more aqualungs made and gathered more men and taught them to aqualung dive. In Toulon he started an unofficial mine-clearing and wreck-clearing unit. Later this unit was made official. One of the men who he trained was Broussard, who founded the first post-WWII scuba diving club, the Club Alpin Sous-Marin.

Postwar

The public first hears about frogmen.

The first known underwater diving club in Britain, "The Amphibians Club", is formed in Aberdeen by Ivor Howitt (who modified an old civilian gas mask) and some friends. They called underwater diving "fathomeering", to distinguish from jumping into water .

1946:

Cousteau-type aqualungs go on sale in France.

Yves Le Prieur invents a new version of his breathing set. Its fullface mask's front plate was loose in its seating and acted as a very big, and therefore, very sensitive diaphragm for a demand regulator: see Diving regulator#Demand valve.

The Cave Diving Group (CDG) is formed in Britain.

1948: Auguste Piccard sends the first bathyscaphe, FNRS-2, on unmanned dives.

Siebe Gorman and/or Heinke start making Cousteau-type aqualungs in England. Captain Trevor Hampton had a dive with one. Siebe Gorman and the Royal Navy expected aqualungs to be used with weighted boots for bottom-walking for light commercial diving: see Aqua-lung#"Tadpoles".

Ted Eldred in Australia starts designing the first open-circuit single-hose scuba set known: see Porpoise (make of scuba gear).

Georges Beuchat in France creates the first surface buoy.

1948 or 1949: Rene's Sporting Goods shop in California imports aqualungs from France. Hollywood sees them and gets interested.

1949: Otis Barton makes record dive to 4,500 feet in his Benthoscope.

1950: Cousteau-type aqualungs go on sale (but very expensive) to industry and civilians in Britain. Siebe Gorman made it at Chessington.

A British naval diving manual printed soon after this said that the aqualung is to be used for walking on the bottom with a heavy diving suit and weighted boots, and did not mention Cousteau.

A report to Cousteau said that only 10 aqualung sets had been sent to the USA because the market there was saturated.

The first camera housing called Tarzan is released by Georges Beuchat,

1951: The movie "The Frogmen" is released. It is set in the Pacific Ocean in WWII. In its last 20 minutes, it shows USA frogmen, using bulky 3-cylindered aqualungs on a combat mission. This equipment use is anachronistic (in reality they would have used rebreathers), but it shows that aqualungs were available (even if not widely known of) in the USA in 1951.

1951: The US Navy starts to develop wetsuits, but not known to the public. .

1951: In December, the first issue of Skin Diver Magazine (USA) appears. The magazine ran until November 2002.

Cousteau-type aqualungs go on sale in Canada.

1952: Cousteau-type aqualungs go on sale in the USA.

Ted Eldred in Australia starts making for public sale the Porpoise (make of scuba gear). This was the world's first commercially available single-hose scuba unit and was the forerunner of most sport SCUBA equipment produced today.

Public interest in scuba diving takes off

1953: The National Geographical Society Magazine publishes an article about Cousteau's underwater archaeology at Grand Conglou island near Marseille, and in French-speaking countries a diving film called paves (Shipwrecks) came out. That started a massive public demand for aqualungs and diving gear, and in France and America the diving gear makers started making them as fast as they could. But in Britain Siebe Gorman and Heinke kept aqualungs expensive, and restrictions on exporting currency stopped people from importing them. Many British sport divers used home-made constant-flow breathing sets and ex-armed forces or ex-industrial rebreathers. In the early 1950s, diving regulators made by Siebe Gorman cost 15, which was an average week's salary.

After the supply of war-surplus frogman's drysuits ran out, free-swimming diving suits were not readily available to the general public, and as a result many scuba divers dived with their skin bare except for swimming trunks. That is why scuba diving used often to be called skindiving. Others dived in homemade drysuits, or in thick layers of ordinary clothes.

After the supply of war-surplus frogman's fins dried up, for a long time fins were not available to the public, and some had to resort to such things as gluing marine ply to plimsoles.

Captain Trevor Hampton founds the British Underwater Centre at Dartmouth in Devon in England.

Rene's Sporting Goods shop (now owned by Spirotechnique) becomes U.S. Divers, now a leading maker of diving equipment.

Georges Beuchat in Marseille, France invent and release the first isothermic wetsuit.

15 October 1953: The BSAC is founded.

1954: USS Nautilus, the first nuclear-powered submarine, is launched.

The first manned dives occur in the bathyscaphe FNRS-2.

First scuba certification course in the USA is offered by the Los Angeles County Department of Parks and Recreation. Program created by Albert Tillman and Bev Morgan now known as LA County Scuba.

1954: In the USA, MSA advertises (in Popular Mechanics magazine) a two-cylinder aqualung-like open-circuit diving set using the MSA regulator.

1955: In Britain, "Practical Mechanics" magazine publishes an item "Making an Aqualung".

1955: Louis Malle, a young film maker of 23, and Jacques-Yves Cousteau shoot The Silent World, one of the first films to use underwater cinematography to show the ocean depths in color.

1956: Wetsuits become available to the public.

1956: ## US Navy publishes tables that allow for repetitive diving.

Around this time, some British scuba divers start making homemade diving demand regulators from industrial parts, including Calor Gas regulators. (Since then, Calor Gas regulators have been redesigned, and this conversion is now impossible.)

Later, Submarine Products Ltd in Hexham in Northumberland, England designed round the Cousteau-Gagnan patent and made sport diving breathing sets accessibly cheap. This forced Siebe Gorman's and Heinke's prices down and started them selling to the sport diving trade. (Siebe Gorman gave its drysuit the tradename "Frogman".) Because of this better availability of aqualungs, BSAC's policy towards rebreathers became merely "Here be dragons: keep out!" and remained so for a long time. In the USA, some oxygen diving clubs developed down the years. Eventually, the Cousteau-Gagnan patent time-expired and any firm could legally copy it.

1956: The Silent World receives an Academy Award for Best Documentary Feature, and the Palme d'Or award at the Cannes Film Festival.

1957: The television series Sea Hunt begins. It introduces scuba diving to the television audience. It ran until 1961.

1958: USS Nautilus completes the first ever voyage under the polar ice to the North Pole and back.

1958: The CMAS (World Underwater Federation) is founded in Brussels.

1959: NAUI is founded by Albert Tillman and Neal Hess.

1960: Jacques Piccard and Lieutenant Don Walsh, USN, descend to the bottom of the Challenger Deep, the deepest known point in the ocean (about 10900m or 35802 feet = 6.78 miles) in the bathyscaphe Trieste: see at this link andthis link

USS Triton completed the first ever underwater circumnavigation of the world.

In Italy, sport diving oxygen rebreathers continued to be made well into the 1960s.

1964: in France, Georges Beuchat create the Jetfins, first vented fins.

1965: ## Robert D. Workman of the U.S. Navy Experimental Diving Unit (NEDU) publishes an equation for computing decompression requirements suitable for implementing in a dive computer, rather than a pre-computed table.

The film version of James Bond in Thunderball (using both sorts of open-circuit scuba) is released and helps to make scuba diving popular.

1966: PADI starts.

1968: First known rebreather with electronic parts is made: the Electrolung.

1971: ScuBaPro introduces the Stabilization Jacket, now in England commonly called stab jacket, and elsewhere Buoyancy Control (or Compensation) Device (BC or BCD).

1972: Scubapro introduces the decompression meter (the first analogic dive computer).

1976: ## Professor Albert A. Bhlmann publishes his work extending the equations to adapt to diving at altitude and with complex gas mixes.

1983: The Orca Edge (the first electronic dive computer) is introduced.

1985: The wreck of RMS Titanic is found. Air India Flight 182, a Boeing 747 aircraft, is found and salvaged off Cork, Ireland during the first large scale deep water (6,200 feet) air crash investigation.

1989: The film The Abyss (including an as-yet-fictional deep-sea liquid-breathing set) helps to make scuba diving popular.

The Communist Bloc falls and the Cold War ends (see Fall of Communism and Collapse of the Soviet Union), and with it the risk of future attack by Communist Bloc forces including by their combat divers. After that, the world's armed forces had less reason to requisition rebreather patents submitted by civilians, and sport diving automatic and semi-automatic mixture rebreathers start to appear. See "rebreather history" link below.

1995: BSAC allows Nitrox diving and introduced Nitrox training.

1996: PADI releases their Enriched Air Diver Course.

1997: The film Titanic helps to make underwater trips onboard MIR submersible vehicles popular.

1998 August: Dives on RMS Titanic occur using Remotely Operated Vehicle controlled from the surface (Magellan 725). First ever live video broadcast from the sunken White Star liner is made.

1999 July: The Liberty Bell 7 Mercury spacecraft is raised from 16,043 feet (4891 m) of water in the Atlantic Ocean during the deepest commercial search and recovery operation to date.

2001 December: The BSAC allows rebreathers to be used in BSAC dives.

Notes

^ Entries marked ## are about decompression tables.

^ Arthur J. Bachrach, "History of the Diving Bell", Historical Diving Times, Iss. 21 (Spring 1998)

^ a b c d e f g h Acott, C. (1999). "A brief history of diving and decompression illness.". South Pacific Underwater Medicine Society journal 29 (2). ISSN 0813-1988. OCLC 16986801. http://archive.rubicon-foundation.org/6004. Retrieved 2009-03-17. 

^ a b c d e Historical Diving Society magazine issue 45, page 37

^ Edmonds, Carl; Lowry, C; Pennefather, John. "History of diving.". South Pacific Underwater Medicine Society Journal 5 (2). http://archive.rubicon-foundation.org/5894. Retrieved 2009-03-17. 

^ Mario Theriault, Great Maritime Inventions 1833-1950, Goose Lane, 2001, p. 46

^ a b Quick, D. (1970). "A History Of Closed Circuit Oxygen Underwater Breathing Apparatus". Royal Australian Navy, School of Underwater Medicine. RANSUM-1-70. http://archive.rubicon-foundation.org/4960. Retrieved 2009-03-16. 

^ a b Butler WP (2004). "Caisson disease during the construction of the Eads and Brooklyn Bridges: A review". Undersea Hyperb Med 31 (4): 44559. PMID 15686275. http://archive.rubicon-foundation.org/4028. Retrieved 2008-06-19. 

^ Bert, P. (originally published 1878). "Barometric Pressure: researches in experimental physiology". Translated by: Hitchcock MA and Hitchcock FA. College Book Company; 1943. 

^ Boycott, A. E.; G. C. C. Damant, J. S. Haldane. (1908). "Prevention of compressed air illness". J. Hygiene 8: 342443. http://archive.rubicon-foundation.org/7489. Retrieved 2008-08-06. 

^ a b c d e Carter Jr, R. C. (1977). "Pioneering Inner Space: The Navy Experimental Diving Unit's First 50 Years". US Naval Experimental Diving Unit Technical Report NEDU-1-77. http://archive.rubicon-foundation.org/4799. Retrieved 2008-04-21. 

^ Historical Diving Society magazine issue 45, page 43

^ Vann RD (2004). "Lambertsen and O2: beginnings of operational physiology". Undersea Hyperb Med 31 (1): 2131. PMID 15233157. http://archive.rubicon-foundation.org/3987. Retrieved 2009-03-16. 

^ Butler FK (2004). "Closed-circuit oxygen diving in the U.S. Navy". Undersea Hyperb Med 31 (1): 320. PMID 15233156. http://archive.rubicon-foundation.org/3986. Retrieved 2009-03-16. 

^ a b Historical Diving Times, issue #44 (summer 2008), pages 5-12

^ Fulton, H. T.; Welham W., Dwyer J. V., Dobbins, R. F. (1952). "Preliminary Report on Protection Against Cold Water". US Naval Experimental Diving Unit Technical Report NEDU-5-52. http://archive.rubicon-foundation.org/3387. Retrieved 2008-04-21. 

^ Valentine, R. BSAC: The Club 1953-2003. BSAC. ISBN 9780953891955. 

^ a b c BSAC. "Section 1.1 A Brief History of the British Sub-Aqua Club". BSAC. http://www.bsac.org/page/52/11-brief-history-of-bsac.htm. Retrieved 2008-09-05. 

^ "LA County Scuba" (in en-US). LACountyScuba.com. http://www.lacountyscuba.com/. Retrieved 2009-07-16. 

^ Workman, R. D. (1965). "Calculation of Decompression Schedules for Nitrogen-Oxygen and Helium-Oxygen Dives". US Naval Experimental Diving Unit Technical Report NEDU-6-65. http://archive.rubicon-foundation.org/3367. Retrieved 2008-04-21. 

^ Bni M., Schibli R., Nussberger P., Bhlmann Albert A. (1976). "Diving at diminished atmospheric pressure: air decompression tables for different altitudes". Undersea Biomedical Research 3 (3): 189204. ISSN 0093-5387. OCLC 2068005. PMID 969023. http://archive.rubicon-foundation.org/2750. Retrieved 2009-03-16. 

^ Allen, C (1996). "BSAC gives the OK to nitrox. reprinted from Diver 1995; 40(5) May: 35-36.". South Pacific Underwater Medicine Society journal 26 (4). ISSN 0813-1988. OCLC 16986801. http://archive.rubicon-foundation.org/6275. Retrieved 2008-09-05. 

^ Richardson, D and Shreeves, K (1996). "The PADI Enriched Air Diver course and DSAT oxygen exposure limits.". South Pacific Underwater Medicine Society journal 26 (3). ISSN 0813-1988. OCLC 16986801. http://archive.rubicon-foundation.org/6310. Retrieved 2008-09-05. 

References

Mark Lonsdale, The Evolution of US Navy Diving.

Other diving history timelines (external links)

There are other diving history chronologies at:

Diving Lore from its origins to the aqualung breakthrough.

rebreather history

hem.passagen.se

marinebio.org

BSAC info

Rebreather Diving History

Museum of old scuba gear

History of Cave Diving

Categories: Technology timelines | Underwater divingHidden categories: Articles needing additional references from January 2009 | All articles needing additional references
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