The reality is, you can spend a lot maintaining a boat, or very little. That being said, if you spend very little, you can expect to have problems just about every time you go out. They may not be big ones, but they'll be there as nuisances.
Depending on how you want the boat to look, you have cosmetics. A coat of wax at least every six months. I'd think that would be often enough up in BC. Keeping the boat washed, in general, at least every two weeks. Polish the stainless every six months.
Change the oil in the engine according to factory specs. Probably every 100-200 hours. Change fuel filters as needed. Keep DISTILLED water in the batteries (needs to be checked every couple of weeks, at least.)
Clean the raw water intake filter for the engine at least every other outing, if you live in an area with a lot of junk in the water. Beware of barnacles living in the filter/raw water hose. If you see them, you need to kill them and clean the dead critters out. (Vinegar in the plastic/glass part and on the screen if you're very patient. On-Off if you're not patient. Just be careful and wear gloves!)
Check the fresh water pump, faucets, etc. for leaks. If the water starts tasting nasty, purge the tanks, bleach them, purge and rinse them again. A hint: Dump a bottle of cheap, sweet white wine into the water before a weekend outing. It makes the water taste better coming out of a fiberglass tank.
I routinely (once a month) pump the heads full of vinegar and let it sit inside the pump/hoses for at least an hour, then rise them using fresh water until I'm positive the hoses are clean. The vinegar will attack salt deposits and, um, stuff in the pump, joker valve, hoses, etc., and soften them up so they can be pumped out. The nice thing about this is you can just pump them overboard.
Haulout, pressure wash the hull, bottom paint, PropSpeed for the prop and shaft, once yearly. Replace the shaft/prop zincs. That depends on the marina you're in. If you're lucky, once a year during haulout. If you have the boat in a marina with problems, you may be changing zincs every month. (If you do, move the boat somewhere else. If you have a bunch of older power boats around you, you can almost bet they're the culprits!)
Figure on replacing the running rigging once every couple-three years. You'll know when--you'll see little cuts, abrasions, etc.
Keep moving things clean and lubricated like winches, windlasses, genoa cars, sheaves, etc.
Light bulbs have to be replaced occasionally. Make sure you have spares for every different type you use aboard. Nothing is as vexing as finding out you don't have a replacement for your port running light--right at dusk.
Carry a spare bilge pump and bilge pump switch. They always seem to fail when you need them the most. Know where they're located, and have the tools to install them.
Carry a spare raw water impeller for your engine, and a new gasket for the water pump. Again, know where it's at and how to replace it, and keep the tools on the boat.
This isn't really maintenance, but something to think about: Make sure you use a toilet paper that is designed to fall apart quickly. The best stuff can be purchased at a marine or RV supply. Sorry to sound like a chauvinist, but make sure your female crew/kids understand to use a VERY SMALL amount of toilet paper. Just what they need, and that NOTHING but waste and toilet paper go into the head. In other words, if you haven't eaten it, it doesn't go in the head! Nothing will wreck a beautiful weekend's cruise faster than having to fix the head while you're swinging around the hook.
In the same vein: carry a spare joker valve for the head, and several pairs of disposable rubber gloves. You'll need them, sooner or later. Trust me. Been there, done that entirely too many times. (Being the cranky old man that I am, I have little signs over the heads: 'You break it or you plug it up, you fix it!' Believe me, that makes believers of most people.
These are just a few of the things you have to watch.
One thing I've learned about boats over the (too) many years I've been around them: They're like puppies. If you exercise them regularly, they don't cause you near the grief they will if you leave them to their own devices. I'm only partly kidding here. If you use the boat, things are not nearly as likely to break. Boats don't like to sit in their slips. Engines, particularly, don't like to be left sitting for extended periods. This is most true of diesel engines. They like to be used, and they like to have a heavy load put on them occasionally. It blows the carbon off the tops of the pistons, valves, etc. They don't like dirty, contaminated fuel, and the best way to insure they don't get it is to run the fuel out of the tank regularly. Even if you use the boat regularly, keep something like BioBor JR (algaecide) in the tank to kill the critters. Remember they'll settle to the bottom of the tank, so sooner or later you'll have to clean it out. Depending on how fresh the fuel is and how much water you have in the tank, that might be a very long time or very short time. A hint: Keep the tank full. No room at the top of the tank for condensation=less water in the bottom of the tank. No water in the tank, nowhere for algae to grow!
I'm sure if I sit around and think about it, the cobwebs would fall off of other things, but this will give you a little to think about.
Go out, sail your boat, have fun, and enjoy the area. I did a tiny bit of cruising up there when I was in my 20's. (Long damned time ago) and loved it.
Good luck and fair winds to you!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.