Have reports prepared for the coast guards should they inquire about the equipment you have on-board, including but not limited to safety equipment legally required.
Make check lists before departure
Know you have all the spares and and emergency equipment you need when your away from the dock
You can easily provide your mechanic with details of your vessel
Perform maintenance before breakdowns occur and have less repairs to make
When upgrading to your next boat have a detailed historical report of all maintenance and history of repairs that have been completed
Have detailed lists of all the equipment you have on your vessel.
Know the warranty periods.