I received a very bad image (copy machine quality) of my 3rd great-grandfather's ship (attached). What can I do in Photoshop to make this better? I am on a MacBook Air running macOS Monterey V12.6 and Photoshop V24.0.0 (yearly subscription). Thank you in advance!
There's really not much you can do. A slight blur and overlaying multiple layers of this on itself with slight offsets using Multiply blending mode might make it more solid, but it won't bring back more details.