You dont need many tools for boat work.

You want a drill and electric RO sander. Working inside its good to have a little ShopVac and a light.

Sometimes you have to do heavy stripping and grinding in preperation for new glasswork. A sander will do it, but it takes time. This is not a job you want to linger over. I prefer an angle grinder with sanding attachments. They have a rubber pad attachment that takes hook & loop pads. Even with higher grits its very ferocious and must be handled with care.

You cant reach tight spots like corners with a sander or grinder. I use attachments for a drill like wire brushes, grinding stones and the like.

Most projects can be accomplished with just these few tools.

Cutting tools are only needed if you're going to cut into the boat or work with wood. Other specialty jobs may require special tools.

But, for the most part, boat work is grunt work.