Craig66
Contributor
Can anyone explain why oceanic went from a 7 segment TLBG (tissue loading bar graph) before DECO to an 4 segment TLBG?
My VT3 and all prior oceanics had 7 segments on TLBG before going into DECO and it was nice to be able to see the segments climb and get a good sense of where I was with my tissue loading. I dove with a buddy recently who had the VT4 and his scale had only 4 segments. Essentially we both hit segments 1,2,3 at the same time and then while I slowly climbed from 4, 5, 6, 7 (if I chose) he sat at 4 constantly with little idea of his tissue loading. Now before anyone jumps in, I do realize that the TLBG is an added extra as the only thing that counts is obeying my no deco time remaining and in reality I would have plenty warning that DECO was approaching as my No Deco times at a given depth would begin to decrease into the single digits.
The reason I really like the TLBG with 7 segments was that I could use it to achieve a level of conservatism and when diving I choose never to go above 6 segments and consider entry into segment 7 as a sign to begin to rise even if I have 10 mins or so at a given depth. When diving with my daughter (12) we have chosen not to go above 4 segments. As stated I know I can build all of that into the ND time remaining even without any TLBG graph I am just interested in knowing why oceanic made that change
Thanks
My VT3 and all prior oceanics had 7 segments on TLBG before going into DECO and it was nice to be able to see the segments climb and get a good sense of where I was with my tissue loading. I dove with a buddy recently who had the VT4 and his scale had only 4 segments. Essentially we both hit segments 1,2,3 at the same time and then while I slowly climbed from 4, 5, 6, 7 (if I chose) he sat at 4 constantly with little idea of his tissue loading. Now before anyone jumps in, I do realize that the TLBG is an added extra as the only thing that counts is obeying my no deco time remaining and in reality I would have plenty warning that DECO was approaching as my No Deco times at a given depth would begin to decrease into the single digits.
The reason I really like the TLBG with 7 segments was that I could use it to achieve a level of conservatism and when diving I choose never to go above 6 segments and consider entry into segment 7 as a sign to begin to rise even if I have 10 mins or so at a given depth. When diving with my daughter (12) we have chosen not to go above 4 segments. As stated I know I can build all of that into the ND time remaining even without any TLBG graph I am just interested in knowing why oceanic made that change
Thanks