I got a bunch of 30 - 40 year old power tools from my dad that probably work just as well as the day they were bought. Just don't make them like they used to!!!
But I also have a bunch of the Dewalt 18v cordless tools that are light, more powerful, and just generally work better than the 30 year old stuff. And I don't think I've used the ones my dad left me since I've had them. There are Lithium batteries for sale
that fit in my tools, but I haven't bought any yet due to already having 4 nicads that came with some of the tools or a set.
The circular saw is no where near as powerful as a corded one, and I still use a corded saw for larger jobs. But I'm not sure how often you'll need one of those on your boat.
I have the 4 1/2 inch 18 v angle grinder (called a cut off tool). It's a little slower (only a little) and the battery doesn't last long (no big surprise there). But if you were concerned about cutting away rigging
on a lost mast
, you might want to give it a look.
And the drill is a fair amount more powerful than any corded drill I can remember using. Of course, in the last 10 years any corded drill I've used was a cheapy (or 30 years old).
The 1/4 impact is a thing of brilliance. And I've never seen one made with a cord. But, I don't think it's ever touched my boat, and I'm not sure if I'd ever want it to.
But now I walk into the hardware
store, and I see all the Dewalt tools, each with a battery included (and included in the price). And I see the Porter Cable tool, each being sold as a bare tool, batteries come separate (and they have lithium ion), it makes my question if maybe I oughta have bought those instead.