In 1904, submarine engineers Siebe and Gorman, together with physiologist Leonard Hill, designed a device to allow a diver to enter a closed chamber at depth, then have the chamber still pressurised raised and brought aboard a boat.
A recompression chamber intended for treatment of divers with decompression sickness was built by CE Heinke and company in 1913, for delivery to Broome, Western Australia in 1914,[REF] where it was successfully used to treat a diver in 1915 [REF].