Perhaps what the focus of this discussion is not so much about responsibility of the dive op/ DM, the buddy or the diver. What should really be examined is the responsibility of the training organization.
Many of us would never descend to 145' and do a deco dive without a well thoughtout plan. This comes from certain basic understanding of gas management, gas planning, buddy communication and inherent risks. For those of us who do have these skills to plan a dive such as this, how did we attain it? Classes, discussion and practice. In my case if someone were to say - why don't you come diving with us in some deep caves. With my skill set, I would tactfully decline. I have enough knowledge to recognize that which I don't know. That which I don't know could get me or my buddy killed.
So what I advocate is to have the certifying agencies be more discriminating in not only who the certify but also include a gas management course. This starts at OW and is refreshed with each successive class.
Many of us would never descend to 145' and do a deco dive without a well thoughtout plan. This comes from certain basic understanding of gas management, gas planning, buddy communication and inherent risks. For those of us who do have these skills to plan a dive such as this, how did we attain it? Classes, discussion and practice. In my case if someone were to say - why don't you come diving with us in some deep caves. With my skill set, I would tactfully decline. I have enough knowledge to recognize that which I don't know. That which I don't know could get me or my buddy killed.
So what I advocate is to have the certifying agencies be more discriminating in not only who the certify but also include a gas management course. This starts at OW and is refreshed with each successive class.