DIR Explorers - View Single Post - Min Deco/No Deco for Non-Tech Trained

GLOC · May 11th, 2006, 11:24 AM

During Fundies it was explained that until Tech trained, all the diving should be non-deco or rather Min Deco as every dive was a deco dive.

The parameters given were 1 min at 9m, 1 min at 6m and 1 min at 3m but no 'tables' were given other than 30mins and 30m is the base line and work back from there with 60 mins at 20m (Fundies Book).

Having done some research to find out more about Min Deco I have found some slightly conflicting information (it seems conflicting to me anyway). As many people have pointed out, there was no guidance in the old Fundies course about how to work out depth/time profiles without using a computer. Hence my questions.

The first set of info is from Peter Steinhoff with the Min Deco Table from 2003. This is quite a useful table in that is gives time/depth details, an ascent profile including stops and repetitive dive surface intervals. However, the stops are different 1@12, 1@9, 3@6, 3@3 but there is a deeper depth, 35m. It would be relatively easy to memorise the table and work from that but there is no guidance beyond the far right hand edge of the table which gives you 5 mins flex (for emergencies) but there is no guidance as to what to do beyond there other than 'padding the stops' but by how much.

Deleted all the bits about Ratio Deco as my assumptions were incorrect for a Min Deco dive from the 5thD paper (air limits rather than 32% or 30/30 although the 5thD paper does not say which gas is used on page 9 where it describes Min Deco). I also learnt that the depth/time limits that are used during the old Fundies was from the agency that you gained your original OW ticket with, which is why I don't remember being taught anything!!

I hope I am not getting out of my depth (pun not intended!), but I would
appreciate any feedback you may have with the points above. I am looking at doing Tech 1 at the end of the year once I have all the basic in-water skills nailed and am aware that the full gambit of RD will be taught then, but until then I would appreciate any info people have that can be used in the limits of Fundies, especially the GUE instructors.

Slightly linked to the above, in the new Fundies is this sort of thing going to be taught?

Regards

Gareth

May 11th, 2006, 11:24 AM	#1 (permalink)
GLOC(Offline) Moderator Join Date: Nov 2005 Location: Fleet, Hants Posts: 2,068	During Fundies it was explained that until Tech trained, all the diving should be non-deco or rather Min Deco as every dive was a deco dive. The parameters given were 1 min at 9m, 1 min at 6m and 1 min at 3m but no 'tables' were given other than 30mins and 30m is the base line and work back from there with 60 mins at 20m (Fundies Book). Having done some research to find out more about Min Deco I have found some slightly conflicting information (it seems conflicting to me anyway). As many people have pointed out, there was no guidance in the old Fundies course about how to work out depth/time profiles without using a computer. Hence my questions. The first set of info is from Peter Steinhoff with the Min Deco Table from 2003. This is quite a useful table in that is gives time/depth details, an ascent profile including stops and repetitive dive surface intervals. However, the stops are different 1@12, 1@9, 3@6, 3@3 but there is a deeper depth, 35m. It would be relatively easy to memorise the table and work from that but there is no guidance beyond the far right hand edge of the table which gives you 5 mins flex (for emergencies) but there is no guidance as to what to do beyond there other than 'padding the stops' but by how much. Deleted all the bits about Ratio Deco as my assumptions were incorrect for a Min Deco dive from the 5thD paper (air limits rather than 32% or 30/30 although the 5thD paper does not say which gas is used on page 9 where it describes Min Deco). I also learnt that the depth/time limits that are used during the old Fundies was from the agency that you gained your original OW ticket with, which is why I don't remember being taught anything!! I hope I am not getting out of my depth (pun not intended!), but I would appreciate any feedback you may have with the points above. I am looking at doing Tech 1 at the end of the year once I have all the basic in-water skills nailed and am aware that the full gambit of RD will be taught then, but until then I would appreciate any info people have that can be used in the limits of Fundies, especially the GUE instructors. Slightly linked to the above, in the new Fundies is this sort of thing going to be taught? Regards Gareth __________________ Gareth Images of Life Photography DIR Team Foxturd Travels Underwater and Further Afar If you don't have the time to do something right, where are you going to find the time to fix it? - Stephen King Last edited by GLOC; May 11th, 2006 at 11:57 AM.