Tables question (PADI tables) could apply to all i guess
- Thread starter DiveBandit
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
catherine96821:
There have been studies of reported cases of DCI that have grouped divers into various categories of safe practices based on the dive planning method used and dives made.
category 1: Safe
Divers who just use tables and a timing device These divers have a very good safety record and have proven to minimize the chances of DCI
category 2: Not so Safe
The I dive by air supply only divers For the most part these divers tend to be shallow water only divers. However they do have a higher risk of DCI due to lack of attention to monitoring their gas supply limits. It is suggested that if they had a computer or used tables they would not be any safer. Their incidence of DCI are normally the results of rapid ascents and AGE sort of injuries and dehydration
category 3:Least Safe
I dive by computer only divers These divers have the highest incidence of DCI. This may be a result of divers who not having the correct experience or training are relying on their computers too much and tend to push beyond their personal, certification and equipment limts. They also may not understand their computers correctly. Another suggestion is also the increased numbers of divers who use computers for reasons of convenience or a lack of understanding of tables. Divers pushing to far and to close to the limits.
category 4: Safe
Divers who plan using both the table and computer These divers are usually tech divers. But they do have a safety record equal to that of category 1 divers when they are diving within comparable limits of sport divers. The occurance of DCI outside of sport diving limts is no higher when compared to within sport limits.
Charlie99
Contributor
- Messages
- 7,966
- Reaction score
- 169
- # of dives
- 500 - 999
Interesting. Real statistics on DCS and type of planning used seems to be pretty scarce. What article(s) or studies are you referring to?
Charlie99:
Yes agreed stats are limited. This based on something from DAN.
- Messages
- 63,269
- Reaction score
- 16,552
very interesting and not too surprising.Thanks, for that. I know the profiles for the sites I do. My usual method is to use both and square them with each other. Once foggy (who knows why it happens one out of twenty times for me), that is a problem with ANY method for me.
There needs to be more data "interpretation" such as what you present IMO.
There needs to be more data "interpretation" such as what you present IMO.
catherine96821:
Yes there does (data interpretation). One should keep in mind that this DAN study which I think has something to do with their project computer program if memory serves me(?)is of course limited to those cases of REPORTED DCI.
The occurance of DCI is still very low considering the total number of dives made every year by each level and experience of diver out there. The cost of treatment is very high and that in itself would be cause for study which DAN, DRDC (formerly DCIEM), USN, and the RN conduct.
Keep in mind that NO one can predict with any certainty and under what conditions a diver will or can become a victim to DCI
scubawally
Guest
OK from what i read here on this thread and based on what i know there have been a few key points omitted. To begin with the tables are not the know all be all of who will and who will not have a DCI hit. The tables were made from data primarily obtained from Navy divers. I know some Navy divers and believe me they are in much better physical shape than most recreational divers. Since physical fitness is known to decrease the risk of DCI, this must be taken into account. Dive tables also do not make any allowances for how hard you work during the dive, or any other parameters that may change at the same dive site from day to day(level of hydration, mental state, water temperature.etc....etc....). Even on a very relaxed dive where you do not break your NDL you may still get bent. There are people out there that have taken 'undeserved hits'.
If i was a newly trained recreational diver and not willing to do any deco (for reasons of lack of training or otherwise) I would plan to be out of the water long before the NDL was reached. If you find yourself needing longer bottom times, register for a nitrox course and if this still does not meet your needs the consider advanced nitrox and deco.
If i was a newly trained recreational diver and not willing to do any deco (for reasons of lack of training or otherwise) I would plan to be out of the water long before the NDL was reached. If you find yourself needing longer bottom times, register for a nitrox course and if this still does not meet your needs the consider advanced nitrox and deco.
N@rco$i$:
Depends how your tables are worked out.
AFAIK the padi tables work on a total dive time. My tables work on the time from leaving the surface to arriving at 6m on the way back up. Best to read the usage notes for your tables of choice.
What DAN article/study are you referencing? I'd like to read it and can't find it anywhere on the DAN site.GDI:
Thanks,
Jackie
catherine96821:
What tables are you diving? PADI tables do not account for ny deep stops and you would need to use the wheel for multilevel diver planning to account for them. If you are doing deep stops on dives below 100' and not using dive planning software, you may want to consider it since you can easily account for deep stops and cut custom tables.
Jackie
Similar threads
