I'm NAUI certified and some of the terms don't translate to the log book i was trained on. Anyways I was thinking about making my own log pages unless I can find someone to help me fill the pages out because I don't get some of the areas. Should hold me over until i can find a dive computer to log them electronically at least.These pages also will fit inside the red binder if you have it or are thinking about buying it.http://www.amazon.com/gp/product/B00348XB6K/ref=oh_details_o01_s00_i00EDIT* After discussing the pages with an instructor he cleared up some of the terms for me. They seem to work fine if you need to record your logs down manually.