I recently inherited a venture 222 and it definitely needs some work. I’m totally new to sailboats and sailing but not boating. I’m wanting to repaint the interior and as I was scraping off the really loose stuff today I noticed a lot of spots starting to look like the pic. It looks like somebody was last painting the interior with the blue. The white is underneath that , and then the fiberglass. My question is, should I just sand off all of the paint until it’s all fiberglass or sand off the loose stuff and paint over it? I’ve never painted a boat before so any advice would be great. Thanks in advance!