New boats you basically clean. That's for about the first 5 years. You also add all sorts of new
gear and upgrades as new boats often are not "tricked out".
After 5 years you need to begin the upgrade and replacement of things with shorter
service life. Brightwork will show need of
varnish and regular maintenance now.
By ten years you are having to recover
cushions replace
sails and often get newer
electronics and
navigation technology. You are now into the end of the service life for a fair amount of
gear - refers, autopilots, windlasses and so forth will require major care or replacement. You'll have less time to get to the light
cleaning because there are more and more things on the to do list with higher priority.
At 15 years you've replaced or are about to replace a fair amount of original gear - running and standing
rigging,
anchor rodes, perhaps the cooker,
head,
cabin lighting and so forth. But the upside is that the replacement are on the beginning of their service life and you don't have to worry about them and can devote your anxiety to older gear waiting to "fail".
The todo list never gets shorter from year 5 onward. Don't forget to sail.