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I can't believe you are looking at the backplate.Snug Pack-grandfather of the Freedom Plate. Mine did not have a quick release cam band. I had to wrestle with a screwdriver to loosen the band on mine, often on pitching seas. Rich guys had two backpacks.
I didn’t notice she was wearing a snug pack.... I have one on my steel 72. It does have the quick release and a nice little guide for the J-valve reserve. The handle is really handy.Snug Pack-grandfather of the Freedom Plate. Mine did not have a quick release cam band. I had to wrestle with a screwdriver to loosen the band on mine, often on pitching seas. Rich guys had two backpacks.
The Scripps people made up the training as they went. They first had to figure out how to dive themselves, and then they had to figure out how to teach it.
That was what prompted Scripps, LA county, and a number of others to research, write and publish The Science of Skin and SCUBA Diving in 1958, which I believe was the the best instruction for scuba written. It was revised and became The New Science of SCUBA Diving in 1962. It was republished into the '90s but was replaced by Agency texts.
Diving historian Eric Hanauer says of the early scuba training program at Scripps:
The curriculum was heavily influenced by the U.S. Navy's training as Underwater Demolition Teams (UDT) Commander Doug Fane often invited Limbaugh and other Scripps divers to participate with his men. This "boot camp" aspect continued as part of dive training for more than 20 years. Limbaugh's training course became the basis of the first public scuba certification, founded in Los Angeles County by Bev Morgan, Ramsey Parks and Al Tillman after they studied under Limbaugh.15
Similar to the type from the intro of Sea Hunt?
Or an actual demand type?
A Jack Brown shallow water free flow mask. Air delivery from the compressor is manually adjusted by the diver. Still available.
The Navy was and is at the forefront of underwater research, and the group putting the book together wanted the the most up to date and accurate information. The agency OW manuals were largely based on, and to this day use the same information found in that book.