We live and cruise on a 12m sailboat.
Annually (last year): Boat maintenance/upgrades €2547, Food €2333, Marina fees (mostly in winter) €1335, Fuel €900, Cruising fees €664, Shorepower €350, Entertainment €240, theoldreader.com subscription €17.
Details vary a lot depending on where we are every year and what exactly breaks on the boat or gets upgraded. That year we anchored in Greece for the summer and spent winter in a Sicilian marina with a good discount.