I thought this could be useful for someone reading this forum and wanting to know how much it costs to own a boat.

This is my experience just after 12 months. And yes a huge expense could crop up at any time. Hopefully not.

my boat is a 1980 Endeavour 26 with no inboard engine and no internal fit out to speak of.
I have just lifted her out for the first time since buying her a year ago.
lifted out on Friday at 9:30 and back in on Tuesday at 11:30.
Marine fees are in the pic below - $666 (Very reasonable I thought)
4L Altex No. 5 Antifoul - $230
fibreglass, epoxy, QCell - $125
sundries - app $100
so approx $1,100

I cut out approx 20 osmosis blisters. Most just under the gel coat.
Cut out, filled and glassed over 2 rotten stiffeners / ribs
Ground out and filled and glass reinforced over a major crack under the mainsheet traveler.
Filled and glassed over some big grooves near the port side winch from the jib sheets.
Filled about 30 old drill holes in the deck
removed, cleaned and resealed 1 window
acid washed the deck and hull
vacuumed out the entire inside. Subsequently finding a piece of the gal pipe frame totally rusted away. it is under the bilge pump outlet. Will fix this another day.

I am hoping to antifoul every 2 years. So say $550/yr

Rego renewal in January - $115, TPP insurance - $430 and yearly mooring service - $242, mooring fee - $280

So a total of say $1,800 for the year.

My outboard is in good nic.
Sails are almost new
rigging in great condition.

So I am hoping to get a few years out of the old girl with, fingers crossed, not much more than the $1,800/yr.