Archaic NDL :10 at 140'?

[northernone]

----NOW OUTDATED AND POTENTIALLY DANGEROUS----

Now that the disclaimer is out of the way...

Came across the old tables I learned on and thought I'd share for perspective and how the understanding of decompression theory and safety margins have changed over the years.

Dive often and worry less,
Cameron

 

[Basking Ridge Diver]

My Veo 2.0 gives me 9 mins on air at 140 using DSAT...

Why the panic?

 

[KeithG]

My Veo 2.0 gives me 9 mins on air at 140 using DSAT...

Why the panic?

My Aladin also gives 9 minutes at 140. If you want to stretch your dive to 10 minutes, then it wants you to stay at 130 feet. This is on air.

 

[BoltSnap]

I think these tables were based on the US Navy way back then before PADI went to their own tables.

 

[PfcAJ]

Doesn't seem too crazy. DecoPlanner spits out a min deco ascent for 9mins with gf 40/85.

 

[rhwestfall]

Yep, 60/60 & 100/25 - that's the US Navy Tables for quite some time....

 

[tursiops]

Even the current PADI tables give 8 mins at 140.

I think these tables were based on the US Navy way back then before PADI went to their own tables.

Correct.

 

[Caveeagle]

I think these tables were based on the US Navy way back then before PADI went to their own tables.

I still have my old NU-WAY tables based on the 1984 Navy tables. It also gives you 10m at 140'.

...Hold onto your cappuccino!... It gives you a NDL of :05m all the way down to 190'

YMMV

 

[boat sju]

Same as my old PADI tables. If I remember right, our instructor taught us to take 5 minutes off the NDL's as an FS. Probably a good idea, Great Lakes wreck dives could be fairly square profiles.

 

[Killerflyingbugs]

You should see the tables they dive in the GOM, they say navy tables are too conservative, ndl of 5 min at 200' on air if I remember right