Tables

boomer · February 9th, 2007, 04:55 PM

When running non deco dives what tables do you use?

rjack · February 9th, 2007, 05:16 PM

Since you're US and probably using imperial, these:
Gas=air
Depth Time
40' 170 min
50' 60 min
60' 50 min
70' 35 min
80' 30 min
90' 25 min
100' 20 min
110' 15 min
120' 10 min

subtract 20% for 32%EAN dives. In fact you're better off just memorizing a 32% table in the first place.

Richard

student · February 9th, 2007, 05:18 PM

30m (100ft) MDL of 20mins on air
+5mins for every 3m (10ft) above this depth
eg
25mins for 27m
30mins for 24m

These are for air, but for 32% or 30/30 just minus 20% depth

ie 30m 'becomes' 24m on 32%, so your Min deco at 30m on 32% is 30mins.

Min deco is 1s up every 3m from 50% depth.

If you exceed MDLs by 5mins, just add 5mins to stops on your way up

Surface interval...just do an hour and you should be good to go, but I guess double 3 & 6m stops if you're feeling it.

These are probably better than all that though:

http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf

Not sure how other people do it...and sorry if my explanation is complicated

Sorry, didnt realise someone was already there!!!

boomer · February 9th, 2007, 06:37 PM

I was just wondering where you got the numbers. I had a class where all of the dives were planed by tables. The instructor had a variety of tables. RGBM, Naui and IANTD. I guess my question is are they the same? and when using this table (http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf)what happens if your time goes over due to a situation.
I am scheduled to take the DIR-F this summer but I am trying to see what other DIR's use.

Thanks

student · February 9th, 2007, 06:56 PM

I looked at the PADI tables, and I think BSAC tables are pretty similar...the MDL always seems to be 20mins at 100ft anyways...

the +5min for every 10ft works until about 21m (66ft?), when the MDL is about 40mins , and then 50mins for 18m (60ft?) and then gets up to about an hour for 15m (50ft?)...above that the numbers get too big to worry about...these are recalled from memory but should be vaguely right...

if you were at 30m for 25min on air (5mins over 'NDL') then Id add 5 mins on the way up from 15m (ie 2@15m, 2@12m, 2@9m, 2@6m and 2@3m).

Your instructor will explain this all so much better than I just have during fundies and all will become clear, so just stick to what you've been doing for now!!!

reinoud · February 9th, 2007, 07:02 PM

Quote: (Originally Posted by boomer)

When running non deco dives what tables do you use?

There are some tables available for download at http://dir-diver.com/en/

rjack · February 9th, 2007, 07:27 PM

Quote: (Originally Posted by boomer)

I was just wondering where you got the numbers. I had a class where all of the dives were planed by tables. The instructor had a variety of tables. RGBM, Naui and IANTD. I guess my question is are they the same? and when using this table (http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf)what happens if your time goes over due to a situation.
I am scheduled to take the DIR-F this summer but I am trying to see what other DIR's use.

Thanks

The numbers I posted are very similar to NAUI tables, which are a slightly more conservative version of the US Navy tables.

The key is to:
ditch the air diving - 32% is the standard gas from 0-100ft
do 30ft per min up to 50% of depth
1 min stops every 10ft from there to the surface (minimum)

1.5 hour surface intervals are best

If not possible, double (or triple) your shallow stops.

Richard

Michael-Fisch · February 20th, 2007, 09:02 AM

Hey guys,

If you're DIR divers, then you shouldn't have a PFO, be out of shape, smoke cigarrettes, be grossly obese, dehydrated, injured, or drunk. In other words, you should have no need to use conservative tables cut for people who have no business diving.
The OLD US Navy tables were conservative enough to keep old and fat Master Divers from getting bent too often, for people who are in good shape they are very conservative, the other tables you have listed are best used for divers who should be in the hospital instead of underwater - NAUI, PADI and BSAC.
If you have to use tables, try Hamilton's, then the COMEX tables followed by the French and Spanish Navy tables - the New US Navy tables are too conservative.

I am almost 50 years old, weigh 5 Kilos too much, don't exercise often, and dive a GF of 35/125 for my tech dives in cold water without problems. In fact, for me, a GF of 35/125 has room to be trimmed, I have also done dives at GF 35/150 without problems - but stopped using a GF High of 150 after having bruised myself while exiting and then having the bruised area get bent from the screwed up circulation in the bruise.

Michael

Gareth Burrows · February 20th, 2007, 10:28 AM

Quote: (Originally Posted by Michael-Fisch)

Hey guys,

If you're DIR divers, then you shouldn't have a PFO, be out of shape, smoke cigarrettes, be grossly obese, dehydrated, injured, or drunk. In other words, you should have no need to use conservative tables cut for people who have no business diving.

The OLD US Navy tables were conservative enough to keep old and fat Master Divers from getting bent too often, for people who are in good shape they are very conservative, the other tables you have listed are best used for divers who should be in the hospital instead of underwater - NAUI, PADI and BSAC.

Michael

I wonder if you realise what a dickhead you sound like.

Michael-Fisch · February 20th, 2007, 10:51 AM

Quote: (Originally Posted by Garf)

I wonder if you realise what a dickhead you sound like.

No I don't. Please explain, I'm always happy to learn diving from an expert.

Michael

February 9th, 2007, 04:55 PM	#1 (permalink)
boomer(Offline) New Member Join Date: Sep 2006 Location: Alabama Posts: 30	Tables When running non deco dives what tables do you use?

February 9th, 2007, 05:18 PM	#3 (permalink)
student(Offline) New Member Join Date: Nov 2005 Location: Bristol Posts: 56	30m (100ft) MDL of 20mins on air +5mins for every 3m (10ft) above this depth eg 25mins for 27m 30mins for 24m These are for air, but for 32% or 30/30 just minus 20% depth ie 30m 'becomes' 24m on 32%, so your Min deco at 30m on 32% is 30mins. Min deco is 1s up every 3m from 50% depth. If you exceed MDLs by 5mins, just add 5mins to stops on your way up Surface interval...just do an hour and you should be good to go, but I guess double 3 & 6m stops if you're feeling it. These are probably better than all that though: http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf Not sure how other people do it...and sorry if my explanation is complicated Sorry, didnt realise someone was already there!!! Last edited by student; February 9th, 2007 at 05:25 PM.

February 9th, 2007, 06:37 PM	#4 (permalink)
boomer(Offline) New Member Join Date: Sep 2006 Location: Alabama Posts: 30	Tables I was just wondering where you got the numbers. I had a class where all of the dives were planed by tables. The instructor had a variety of tables. RGBM, Naui and IANTD. I guess my question is are they the same? and when using this table (http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf)what happens if your time goes over due to a situation. I am scheduled to take the DIR-F this summer but I am trying to see what other DIR's use. Thanks

February 20th, 2007, 10:28 AM	#9 (permalink)
Gareth Burrows(Offline) Chimp 2 Join Date: Nov 2005 Location: Horsham, West Sussex Posts: 365	Quote: (Originally Posted by Michael-Fisch) Hey guys, If you're DIR divers, then you shouldn't have a PFO, be out of shape, smoke cigarrettes, be grossly obese, dehydrated, injured, or drunk. In other words, you should have no need to use conservative tables cut for people who have no business diving. The OLD US Navy tables were conservative enough to keep old and fat Master Divers from getting bent too often, for people who are in good shape they are very conservative, the other tables you have listed are best used for divers who should be in the hospital instead of underwater - NAUI, PADI and BSAC. Michael I wonder if you realise what a dickhead you sound like. __________________ Garf Amusing and Clever Signature under construction.

February 9th, 2007, 05:16 PM	#2 (permalink)
rjack(Offline) wet behind the ears Join Date: Nov 2005 Location: Seattle, WA Posts: 861	Since you're US and probably using imperial, these: Gas=air Depth Time 40' 170 min 50' 60 min 60' 50 min 70' 35 min 80' 30 min 90' 25 min 100' 20 min 110' 15 min 120' 10 min subtract 20% for 32%EAN dives. In fact you're better off just memorizing a 32% table in the first place. Richard

February 9th, 2007, 06:56 PM	#5 (permalink)
student(Offline) New Member Join Date: Nov 2005 Location: Bristol Posts: 56	I looked at the PADI tables, and I think BSAC tables are pretty similar...the MDL always seems to be 20mins at 100ft anyways... the +5min for every 10ft works until about 21m (66ft?), when the MDL is about 40mins , and then 50mins for 18m (60ft?) and then gets up to about an hour for 15m (50ft?)...above that the numbers get too big to worry about...these are recalled from memory but should be vaguely right... if you were at 30m for 25min on air (5mins over 'NDL') then Id add 5 mins on the way up from 15m (ie 2@15m, 2@12m, 2@9m, 2@6m and 2@3m). Your instructor will explain this all so much better than I just have during fundies and all will become clear, so just stick to what you've been doing for now!!!

February 9th, 2007, 07:02 PM	#6 (permalink)
reinoud(Offline) New Member Join Date: Oct 2006 Location: Netherlands Posts: 30	Quote: (Originally Posted by boomer) When running non deco dives what tables do you use? There are some tables available for download at http://dir-diver.com/en/

February 9th, 2007, 07:27 PM	#7 (permalink)
rjack(Offline) wet behind the ears Join Date: Nov 2005 Location: Seattle, WA Posts: 861	Quote: (Originally Posted by boomer) I was just wondering where you got the numbers. I had a class where all of the dives were planed by tables. The instructor had a variety of tables. RGBM, Naui and IANTD. I guess my question is are they the same? and when using this table (http://dir-diver.com/pdf/minimum-dec...imperial_A.pdf)what happens if your time goes over due to a situation. I am scheduled to take the DIR-F this summer but I am trying to see what other DIR's use. Thanks The numbers I posted are very similar to NAUI tables, which are a slightly more conservative version of the US Navy tables. The key is to: ditch the air diving - 32% is the standard gas from 0-100ft do 30ft per min up to 50% of depth 1 min stops every 10ft from there to the surface (minimum) 1.5 hour surface intervals are best If not possible, double (or triple) your shallow stops. Richard

February 20th, 2007, 09:02 AM	#8 (permalink)
Michael-Fisch (Online) New Member Join Date: Jul 2006 Location: Germany Posts: 264	Hey guys, If you're DIR divers, then you shouldn't have a PFO, be out of shape, smoke cigarrettes, be grossly obese, dehydrated, injured, or drunk. In other words, you should have no need to use conservative tables cut for people who have no business diving. The OLD US Navy tables were conservative enough to keep old and fat Master Divers from getting bent too often, for people who are in good shape they are very conservative, the other tables you have listed are best used for divers who should be in the hospital instead of underwater - NAUI, PADI and BSAC. If you have to use tables, try Hamilton's, then the COMEX tables followed by the French and Spanish Navy tables - the New US Navy tables are too conservative. I am almost 50 years old, weigh 5 Kilos too much, don't exercise often, and dive a GF of 35/125 for my tech dives in cold water without problems. In fact, for me, a GF of 35/125 has room to be trimmed, I have also done dives at GF 35/150 without problems - but stopped using a GF High of 150 after having bruised myself while exiting and then having the bruised area get bent from the screwed up circulation in the bruise. Michael

February 20th, 2007, 10:51 AM	#10 (permalink)
Michael-Fisch (Online) New Member Join Date: Jul 2006 Location: Germany Posts: 264	Quote: (Originally Posted by Garf) I wonder if you realise what a dickhead you sound like. No I don't. Please explain, I'm always happy to learn diving from an expert. Michael