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    Originally certified in 1987, lapsed in 89',...

    Originally certified in 1987, lapsed in 89', recerted in 90 and lapsed again in 98, recerted in 2001 and current ever since. Added EMT-first responder in 2007 and EMT-Basic in 2010.
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    So you are basically comparing a larger composit...

    So you are basically comparing a larger composit cylinder to a typical steel smaller cylinder.


    This is actually not true. You do not 'always' carry the same physical weight to the water for a...
  3. I personally have no problems calling out poor...

    I personally have no problems calling out poor instructors even though I am not a dive instructor. I have better dive skills than most of the instructors around in my local quarries and I used to...
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    To me - if thius is the case: 1) You...

    To me - if thius is the case:

    1) You requested cancelation
    2) After your request, you were billed for more insurance - auto-paid

    If this is the case, then you are entitled to your premium...
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    I only want to add one thing - that is things...

    I only want to add one thing - that is things that look easy, safe and ok to do - may be the result of the individuals ignorance in how to identify all the risks involved. Everything you list is true...
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    Tim, Spend a little time on this website:...

    Tim,

    Spend a little time on this website:
    Cave Diving Website

    Especially read the section on 'Who'

    Do those of us who do cave dive a favor and do NOT attempt to cave/cavern dive without...
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    That to easy. Its cheating......

    That to easy. Its cheating......
  8. I personally would like to see a shift in the...

    I personally would like to see a shift in the whole LDS buisness model. I would like to see manufactures allow 'service centers' where you can go and get good training, basic air fills and have gear...
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    Clara, I can likely help but I'd like a little...

    Clara,

    I can likely help but I'd like a little more info. Also - do you or anyone in your group know how to use a DMM/voltmeter/multimeter?

    First - Where is the schematic you found online?
    ...
  10. Well - to further complicate the issue - the...

    Well - to further complicate the issue - the tables/computers might need to change as well. One of the great benefits for a CCR diver is constant PO2 diving. Some SCR's implement this to a point as...
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    Rich, Let me start with a few things off the...

    Rich,

    Let me start with a few things off the bat.

    First - the DOT *does* already mandate how the fill stations are set up. There are baseline guidelines written by the CGA for handling...
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    I agree with you and we are not alone in this.

    I agree with you and we are not alone in this.
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    DOT has always been involved. DOT writes the...

    DOT has always been involved. DOT writes the procedures for handling the tanks, the required inspections etc. This is also very tightly coupled to the compressed gas association (CGA). The CGA...
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    The other aspect at looking at stats is you only...

    The other aspect at looking at stats is you only hear about the tanks that fail catastrophically. As I said earlier in this thread, we have had 10+ 2216psi AL SCBA bottles fail this year. All with...
  15. I am not suprised about the cost. With most of...

    I am not suprised about the cost. With most of these devices, the real cost is in the development and not the hardware. If the development is mostly done, then its costs are mostly known and a target...
  16. The key word is reasonable efforts to keep 100ft...

    The key word is reasonable efforts to keep 100ft distance in the channel. If the channel is 200ft wide - then the boat must stay out of the 100ft radius because that is reasonable. Now, in a confined...
  17. Do a quick google search - I hit MANY sites...

    Do a quick google search - I hit MANY sites listing the heights for the two spans, the 'main' span is 63ft with the bumpers, the EAST span is 65ft which is the standard height for the ICW.
    ...
  18. From the charts and other info in this thread -...

    From the charts and other info in this thread - that section of bridge outside the bumpers does in fact have the most height clearance. Its a difference of a few feet.
  19. The East channel (at least according to the info...

    The East channel (at least according to the info I have) is the most clearance. I won't second guess the captain. If he did his homework, he should know within reason his height and the clearance he...
  20. The key parts here are that divers cannot 'block'...

    The key parts here are that divers cannot 'block' a navigable waterway. If there is not 100' clearance for the boat to pass safely in a navagible waterway where divers are present, the boat has the...
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    Whats the point if you can't get a fill? ...

    Whats the point if you can't get a fill?

    Seriously - the 6351 alloy is bad juju. You want people to take risk (literally thier lives) in filling this tank for little to no profit just so you...
  22. Devils advocate here = by statute, divers are not...

    Devils advocate here = by statute, divers are not allowed to block a navigable waterway. Therefore, divers cannot legally be somewhere that blocks a navigable waterway.

    The problem here is not...
  23. Actually - the tube would collapse. The air...

    Actually - the tube would collapse. The air pressue in the tube is at the surface pressure which is a deficite of 10psi compared to ambient at depth at 20ish feet. If its rigid tube - well,...
  24. I agree but there is a fundemental difference in...

    I agree but there is a fundemental difference in technology. In OC diving, we know exactly what we are going to breathe the entire dive time. With any type of rebreather, the gas we breathe is...
  25. I have dove one rebreather - the Dive Rite Optima...

    I have dove one rebreather - the Dive Rite Optima and for a VERY expeierence diver - it was still very difficult. There is a STEEP learning curve there to simply dive it.

    The other thing I...
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