Bob Moore wrote:
Matt Wiser wrote

Just checked on Yahoo news: the flight deck's in 150 feet; 18 feet
below the depth required for additional training and the need for
mixed gases. Anyone who doesn't do so and still dives that deep is
a natural candidate for a Darwin Award.


Required by whom?

PADI and any dive-tour operator who wishes to remain insured and in
business. Diving below 130 feet with open-circuit SCUBA is not safe
without more than casual exposure. At a minimum, it requires timed
decompression stops and careful attention to detail. Diving with mixed
gas can eliminate or reduce the stops, but they add their own hazards,
like oxygen toxicity.


--
Tom Schoene lid
To email me, replace "invalid" with "net"