What is an optimal dive watch for dive master?

[Diver0001]

In that scenario, you yourself are diving with no device to tell you your depth and dive time? Is this in open water or confined?

Did you hear me say that? I have a dive watch as well as a computer. At this point it makes no sense to buy a new dive watch when you can buy a computer for less but the one I bought years ago still works so I still use it to dive tables when I'd rather have the students using computers. It doesn't happen every time but the shop only has so many computers to rent and when it's busy it's sometimes the most practical solution given that I have these two computers.

R..

 

[dmaziuk]

I am not very experienced diver, however, I think that it is pretty hard to get into deco during recreational training dives. Firstly, dive profiles are quite shallow and rarely exceed 30 m which is a limit for PADI AOWD. Secondly, people are diving with 12 L tanks, which are usually filled in up to 180-190 bars. Accordingly dives rarely exceed 40 min. If diving guide goes to deco, then it is clear that he/she is doing something very wrong.

No on all counts. Our average reef dives run to an hour on Al80s: good 30% more than "40 min". After a few days of diving the NDL at 30 metres can easily be down to single digits, that is not that hard to overstay on a square dive (e.g. on a wreck). While it may be hard to get into deco, that is not exactly the same as getting over computer-calculated no-stop limit.

(And of course there's no such thing as 30m PADI AOW limit.)

 

[dmaziuk]

In that scenario, you yourself are diving with no device to tell you your depth and dive time? Is this in open water or confined?

I did a lake clean-up dive once. I forget if the lake gets to 10 m at the deepest point, even, but in the clean-up area the soft squishy bottom is above the no-limit depth. In retrospect I should have taken the computer to get the dives into my log.

 

[Efka76]

No on all counts. Our average reef dives run to an hour on Al80s: good 30% more than "40 min". After a few days of diving the NDL at 30 metres can easily be down to single digits, that is not that hard to overstay on a square dive (e.g. on a wreck). While it may be hard to get into deco, that is not exactly the same as getting over computer-calculated no-stop limit.

(And of course there's no such thing as 30m PADI AOW limit.)

Please read PADI manual before you post. OWD - 18 m, AOWD - 30 m. PADI Deep specialty allows divers to go to 40 m. This I know 100 percent!

 

[stuartv]

Did you hear me say that?

No, I did not. What you posted did leave that as a possibility, though. Thus why I asked.

 

[dmaziuk]

Please read PADI manual before you post. OWD - 18 m, AOWD - 30 m. PADI Deep specialty allows divers to go to 40 m. This I know 100 percent!

Looking back I see you said "recreational training dives" so fair enough, but how is it relevant to OP's question? Which is why I misread that, sorry. Yes, an OW instructor maybe won't take you below 18 metres on your certification dive, but what does that have to do with a divemaster leading a group of certified divers?

 

[Diver0001]

No, I did not. What you posted did leave that as a possibility, though. Thus why I asked.

fair enough

 

[ajduplessis]

Otimal dive watch = Rolex submariner
Optimal dive computer = Shearwater Petrel/Perdix

Make that the Shearwater Teric