WetLens
Contributor
Thanks for everyone's input. As you may have noticed, I did post this in Sherwood's thread area - they haven't entered the fray as yet.
Doc: I know you are not trying to dog me. I certainly did not take it that way. It is just that I cannot fathom an algorithym telling me to stop at 46' for 4 minutes on a dive that had an average depth of 47'. Unless I completely misunderstand the interface on my computer, it was telling me that I needed to go to 10'.
I downloaded a trial version of GAP-Diveplanner and ran the day's dive sequence - squared off a bit and always on the conservative (deeper/longer) side.
RGBM at +2 conservative gave me (interestingly enough) 4 minutes at 10'.
BuhlmannC-GF with Conservatism set at 100% - direct ascent okay.
90% - 1 @ 20; 5 @10
80% - 1 @ 20; 14 @ 10
70% - 1 @ 20; 25 @ 10
60% - 1 @ 20; 44 @ 10
From there, I began taking away minutes from my bottom time. These models followed a predictable path - each increment of minutes taken off (I went in 5 minute increments) subtracted a reasonable number of minutes of deco obligation. At 60%, I could make an 18 minute dive to 60' with no deco obligation. Everything beyond that build deco obligation in a rational progression. This makes sense to me.
Going into deco at 47', 68 minutes into the dive with 4 minutes at 10' makes sense.
One minute later - 45 feet; 69 minutes- to have 15 minutes at 10' does not make sense.
Two minutes after that - 42 feet; 71 minutes- now 24 minutes at 10' ???
Two minutes after that - 13 feet; 73 minutes- now 43 minutes at 10' Come on.... that is not a rational progression.
I can follow the model. I understand this stuff. I don't understand how the Wisdom handled the situation.
Doc: I know you are not trying to dog me. I certainly did not take it that way. It is just that I cannot fathom an algorithym telling me to stop at 46' for 4 minutes on a dive that had an average depth of 47'. Unless I completely misunderstand the interface on my computer, it was telling me that I needed to go to 10'.
I downloaded a trial version of GAP-Diveplanner and ran the day's dive sequence - squared off a bit and always on the conservative (deeper/longer) side.
RGBM at +2 conservative gave me (interestingly enough) 4 minutes at 10'.
BuhlmannC-GF with Conservatism set at 100% - direct ascent okay.
90% - 1 @ 20; 5 @10
80% - 1 @ 20; 14 @ 10
70% - 1 @ 20; 25 @ 10
60% - 1 @ 20; 44 @ 10
From there, I began taking away minutes from my bottom time. These models followed a predictable path - each increment of minutes taken off (I went in 5 minute increments) subtracted a reasonable number of minutes of deco obligation. At 60%, I could make an 18 minute dive to 60' with no deco obligation. Everything beyond that build deco obligation in a rational progression. This makes sense to me.
Going into deco at 47', 68 minutes into the dive with 4 minutes at 10' makes sense.
One minute later - 45 feet; 69 minutes- to have 15 minutes at 10' does not make sense.
Two minutes after that - 42 feet; 71 minutes- now 24 minutes at 10' ???
Two minutes after that - 13 feet; 73 minutes- now 43 minutes at 10' Come on.... that is not a rational progression.
I can follow the model. I understand this stuff. I don't understand how the Wisdom handled the situation.