Julie,
One on the problems with SAC (Surface Air Consumtion) is that it is merely a measurement of PSI/minute at the surface. You can easily covert it to Air Consumption at depth, but it is only useful when you are using the same size tank as the one you used to compute your SAC. It is not valid when moving between low and high pressure tanks with the same volume. An SAC vol/min would be the same as an RMV (Respiratory Minute Volume) which measures the volume of air consumed per minute at the surface. This will hold true from tank to tank regardless of tank size, pressure etc, but will vary with conditions - work load, temperature, etc.
RMV is easy to calculate, but the last time I explained it, several people went into math shock. If you'd like I can explain the proceedure in a private message or I can send an Excel spreadsheet programed to do the math for you to anyone wanting it. There are three sheets on the file. The 1st sheet is a logbook page, the 2nd sheet is the RMV and the 3rd contains all the nitrox formulas. The page from the logbook keeps track of dive #, location, date, depth, time, total time, average time, average depth, 100 ft or deeper, 60 ft or deeper, reef, artificial reef, wreck, fresh water, night, # this year, # this month, # at this location, total # of locations, cavern, solo, nitrox & %. I've never kept track of cold vs warm because I have no idea where to draw the line. I'm thinking of adding a column for viz < 3'. I have shared it with others from the board in the past, but only recently put all three pages on one file.
rstone,
"Actually PADI does make one. Its there adventure dive log book pages."
How do you know? Julie said, "I have decided that none of them really have everything I want on them." Nowhere did she say what she wanted on the page, so there is no way you or anyone else could know if everything Julie wants is on PADI's adventure logbook or on any other logbook. Stop, think, act.
DSSW,
WWW
