This Log Book was made by a diver for divers and has no useless fields such as the selection of innumerable types of wetsuits or the dive planning with the dive planner table that no longer uses anyone for 20 years... The log book has been synthesized so that you can fill out a page in 10 seconds without forgetting any useful information: I know how important it is when at the end of the day you have to record the data...