Freshwater v Saltwater Pressure

[Paul Oliver]

Dear Divers

I have a Uwtec Digital Bottom Timer and it is calibrated to freshwater pressure which leads to a greater depth than you are actually at showing in the briney.

Now i remember (i think) reading a thread about this somewhere perhaps on YD some time ago but cannot remember much except i think that the differences are minimal. Can anyone help with an explanation or a link maybe to a conversion table.

Someone clever must have produced one? Dominic maybe?

Dive Safe

Paul

[Narked@50]

Hi Paul

I have looked into this in the past and the answere is: DON'T WORRY ABOUT IT.

The actual difference is 3%, so even on a 50m dive it is only out by 1.5m, you can be out by more just turning vertical in the water!

Unless you are looking at 100m+ dives I would consider this well within the tolerance levels.

James

[Paul Oliver]

Thanks James

I thought it was something like that.

I'm not really into 100m dives and if i was with my BC control 3m error is about normal

Regards

Paul