Yes I have 9 years of logbooks for my private sailing vessels also using log books on a number of commercial motor and sail vessels for the past 7 years.
I usually put the engine hours before departure and then on arrivals which gives me a total for each passage for service and fuel purposes.
Since I brought my Adams 42 I have Been only logging the hours prior to departure and knowing I will be roughly due for a service around the 12 months since ownership as the filter was dated just before my purchace.
It wasn't until yesterday I was curious to see how many hours I have done in the past 12 months which is when I discovered my next Perkins engine fault!
i can dig out all 9 logbooks and some 60,000 nm if you would like looksy? :)