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On Sun, 05 Oct 1997 20:18:39 -0400, G. Irvine wrote: >Sean WKPP breathes nothing from left to right. We use the Scuba Pro FFM >if we need it, and that is because it fits all Scuba Pro regulators, >which is what we use. We pull off the mouthpiece and stick in the reg. I >would not use a piece of dive gear that needed a FFM all of the time - >they are extremely dangerous pieces of crap, and we only use them if we >are afraid of toxing. We all use sign language and we use no gear that >would interfere with sharing gas. We put the FFM on our deepest deco >bottle and carry it up with us. > >However, you may wnat to check with Wayne Marshall for what kind of >dominatrix masks he prefers when being disciplined - that is about the >only other thing a ffm is good for, or if you are just practicing being >a stroke in front of the mirror. Ha Ha Ha. I hope that I didn't infer that the WKPP uses FFM's as primaries in my message. I use them (the ScubaPro's) on deco bottles the same way you do, and for the same reasons (potential o2 tox). I also did not mean to infer that the comms were for diver to diver communication. Sign language serves this purpose beautifully without unnecessary convolution. The comms are used in shallow support diver to surface platform communication, and are only necessary when the conditions and dive objective warrant. The primary dive team obviously would not use a device that interfered with gas sharing in any way. The most appropriate use for FFM's is for positive pressure when diving in contaminated water, in combination with a vulcanized drysuit . In this case hardwire comms are employed between the diver and his tender, with line pull signals serving as a secondary means of communication. Sign language is great, but is next to useless in faceplate vis. You are right that FFM's are extremely dangerous, and apart from deco use I would adamantly discourage anyone reading this message from using a FFM as a primary unless there is an explicit need for it for safety reasons. For any application lacking surface supplied gas, the traditional Hogarthian configuration is THE SAFEST WAY TO DIVE, period. -Sean PS - It sounds as though you know Wayne much better than you really should... -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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