barrier coat

Just picked up new to me 1988 Catalina 25 on a trailer. I'm believe I'm the 4th owner. The PO didn't really understand sailing or boat maintenance and the owner before him was an older lady that either didn't share or he didn't know the questions to ask. We believe the boat has been in...

I am in the process of stripping the bottom paint off of my trailer sailor hull (Oday 192, 1988) and was planning on applying a barrier coat. Scraping the older, blue bottom paint is quite easy and I expected to see white gel coat below. However, I have encountered this brown/tan mottled layer...

Does anyone know if these boats are laid up using polyester or vinylester? And if they're using vinylester, what date did they start using it? Is anyone putting epoxy barrier coats on their boats? Any issues with blisters?

Hello all. My sister and I were recently offered a free 83 Bruce Roberts 34. We have some experience sailing but never owned a sailboat before. Of course it has needs and I really need help with one of them. What is going on with the rudder here? I know the crack is more than just paint but I'm...