158—Meaning of diving
(1) For the purposes
of this Part—
(a) a
person is "diving" if he or she—
(i)
is in a chamber inside which the ambient pressure is
equal to or higher than the hydrostatic pressure at a depth of 1 metre in
seawater (whether or not the chamber is submerged in water or another liquid);
or
(ii)
is submerged in water or another liquid and his or her
lungs are subjected to a pressure greater than atmospheric pressure (whether
or not he or she is wearing a wetsuit or other protective clothing); or
(iii)
is in a manned submersible craft that is submerged in
water or another liquid; and
(b)
"diving" includes diving using a snorkel and diving without the use of any
breathing apparatus.
(2) For the purposes
of this Part, "diving" does not include—
(a)
diving using a snorkel for the purpose of conducting an environmental survey;
or
(b)
diving without the use of any breathing apparatus for that purpose.