Timeline of underwater technology
- 1531 - Guglielmo dives on two of Caligula's sunken galleys using a diving bell from a design by Leonardo da Vinci.
- 1772 - Sieur Freminet builds the first scuba device, but dies from lack of oxygen after 20 minutes
- 1801 - Robert Fulton builds the first submarine, the Nautilus
- 1819 - Augustus Siebe invents a diving suit which receives air pumped down from the surface
- 1825 - William H. James designs a self contained diving suit that had compressed air in a iron container worn around the waist.
- 1876 - Henry Fleuss designs the first working rebreather
- 1934 - Charles Beebe dives to 3,028 feet using a bathysphere
- 1943 - Gagnan invents the regulator and Jacques-Yves Cousteau makes the first scuba dive with a compressed-air aqualung
- 1948 - Auguste Piccard sends the first bathyscape, FNRS-2, on unmanned dives
- 1954 - USS Nautilus, the first nuclear-powered submarine, is launched
- 1954 - first manned dives in FNRS-2
- 1956 - first wetsuit was introduced
- 1958 - USS Nautilus completes the first ever voyage under the polar ice to the North Pole and back
- 1960 - Jacques Piccard and Lieutenant Don Walsh, USN, descend to the deepest known point in the ocean in the bathyscape Trieste
- 1960 - USS Triton completes the first ever underwater circumnavigation
- 1983 - Orca Edge dive computer was introduced.
- 1985 - The wreck of the Titanic was found.
- other time lines (http://scuba.about.com/library/weekly/aa100198.htm )