The development and production of Jim ............... .

In 1974, a United States diving company
introduced a revolutionary armoured diving
suit called Jim. It had been developed over
many years by a British company and
named after Jim Jarratt, who had explored
the wreck of the Lusitania in the 1930s in a
preliminary model of the suit. Jim is a oneperson
submersible device that is
essentially a pressurized suit of armour that
lets a diver work at depths of up to 600
metres while remaining at surface pressure.
Because the diver is never subjected to the
pressure of the depths, there is never a
need to undergo decompression. The first
Jim dives were to 275 metres in the
Canadian Arctic, and the diver was able to
surface in minutes instead of
decompressing for the usual nine days.