I think Dan is alluding to the several agencies that include comprehensive gas planning (Rock Bottom, usable gas etc) in their basic OW courses other than PADI OW.Which is...?
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I think Dan is alluding to the several agencies that include comprehensive gas planning (Rock Bottom, usable gas etc) in their basic OW courses other than PADI OW.Which is...?
Ahhh that's what DIR stands for ^@decompression is right.
That's when you turn to macro photography. And/or nudibranch spotting.the top 15m are poor visibility due to algae.