DSAT or Z+ algorithm

[tpf1230]

I am a new diver and purchased an Oceanic Proplus 3. They don't have an online training class for it yet so I've been going through the manual. It has a dual algorithm for either DSAT or Z+. I'm curious as to the differences (in normal English) and which algorithm is the better choice for fewer stops while remaining safe.

Todd

 

[Scubanoobi]

z+ is more conservative - check out your no deco times at various depths in plan mode (which I assume your comp has) to see the differences.

 

[DiveNav Team]

........ Oceanic Proplus 3. They don't have an online training class for it yet.....

We are working on it ....

 

[tursiops]

Both algorithms are quite safe. The DSAT algorithm (basis for the PADI RDP) matches many other computers and the older Oceanic/Aeris (which only had that algorithm). It works just fine for repetitive non-deco diving, with only moderate surface intervals required. The Z+ (basically a Buhlmann algorithm) is essential if you are doing any deco diving, and perfectly fine for NDL dives.

One consideration is what is your buddy diving, and do you have a second computer you are carrying? You really don't want all the computers in use on you and your buddy to have different algorithms; it won't make much difference on just one dive, but on multi-days of multiple dives the differences accumulate, and it is hard to dive together.

 

[tpf1230]

We are working on it ....

I know. I spoke with someone on the phone yesterday.

 

[KEITHB1955]

I have the 3plus as well and have decided to go with the Z+ plus tables, since getting bent in November 2023 and my age factor I choose to play it safe

 

[Rilelen]

I had an Oceanic computer for years, and always set it to DSAT with no additional conservatism. This will give you basically the same NDLs etc as using the PADI tables. But because there’s no conservatism built in, it’s on the user (you!) to not ride your NDLs and be sensible about how to use the info your computer is telling you.

Setting my Teric to a 95/95 GF seems to roughly approximate my Oceanic in DSAT.

 

[MrChen]

 

[scubadada]

Only 9 1/2 years