The point is that checking an SPG is a clear sign that you're checking your SPG. Looking at the computer means nothing.
Hardware solution to a software problem.
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The point is that checking an SPG is a clear sign that you're checking your SPG. Looking at the computer means nothing.
Sort of. But you have to beat into people the importance of checking their gas consumption to verify their actual consumption.Hardware solution to a software problem.
It is a violation of standards if the instructor (or an assisting DM) cannot monitor his or her students during the dive.I'm not an instructor, but I will comment on what I see locally.
Is there an agency standard for visibility in OW class? In our local lakes by myself 5' visibility is a good day. You put students in the water and your lucky to be able to see your gauges. How in the world can an instructor teach any skills in those conditions? Not to mention the safety concerns of not having any idea what your students are doing. The practice should be illegal.
By the time you get to open water checkouts, the instructor isn't teaching any skills. We don't even demonstrate the skills for students at OW checkouts. We tell them to do a skill and they do it. Skills are taught in the pool, with end to end visibility. In our old quarry, we had visibility that might range from 3-20 feet from day to day and I have literally seen the two extremes on Saturday and Sunday. We're starting our checkout dives in a new quarry this weekend, and I am diving it for the first time tomorrow with another instructor and one of our DMs. No matter the class size, we always have at least one DM in the water with the instructors because of unpredictable conditions and how stressful checkout can be for students in even the best conditions.I'm not an instructor, but I will comment on what I see locally.
Is there an agency standard for visibility in OW class? In our local lakes by myself 5' visibility is a good day. You put students in the water and your lucky to be able to see your gauges. How in the world can an instructor teach any skills in those conditions? Not to mention the safety concerns of not having any idea what your students are doing. The practice should be illegal.
Nitrox should be incorporated into basic open water. Straight up air is a lousy gas for diving except for rare situations. It either doesn't have enough Oxygen, has too much Nitrogen, or typically both.