Blades, did anyone point out to them to differences? Did they offer any sort of suggestion how these signals evolved, or did they just make 'em up to be different??
The person who authored the program is a
respected and
very capable dive team leader who is affiliated with a state team that I also respect. His team is very efficient and effective in what they do. In November of 2008 I explained to the author how line signals were developed by both the U. S. Navy and Dive Rescue International. Essentially, the things you communicate most frequently require the fewest number of line pulls and the things you communicate least often have the greater number of line pulls. Because a tender is constantly checking on the well being of a diver (or at least he should be), 1 pull = okay / okay?
Additionally, in the "standard" PSD line pull system, we account for a possible "line snag" followed by a sudden release which might be interpreted as a single pull and doesn't stop the operation or result in an action that may adversely affect safety.
The "4 or more" pull signal allows for a reflexive, gross motor function reaction that would indicate a need for assistance, and most of the PSD forum readers know the rest...
I also had a lengthy telephone conversation with the author in March of 2009. I was told that both his signals and the standard ones used by DRI, IANTD, ERDI, PSDA and NAPD would be submitted to PADI for consideration. PADI selected the signals written by the author.
I don't fault the author and I don't blame PADI since the people in their office really don't know anything about public safety diving. The fault lies with PADI's "subject matter experts" who reviewed the proposed material and didn't voice a concern over the line signals. The PADI representative that spoke at the "unveiling" at DEMA stated that "bridge inspection" is a function of public safety divers and that is why they had a bridge inspector review their PSD program before it went to print. Again, the PADI office folks only know what they have been told by others...
I am hopeful those in the PSD community will speak up and let PADI know that a "standardized" set of signals in the PSD community would be beneficial to
ALL public safety divers. Your concerns and comments should be sent to:
steve.mortell@padi.com
steve.mortell AT padi.com
and to:
qa@padi.com
qa AT padi.com