Well, we have the boat up on the hard and I planned to do a decent sand to remove the most recent bottom paint, then put a couple good coats on and away we go.
The surveyor did not report any blisters but of course there are hundreds of them. In addition, there was no mention of the "smile" but now that I have had time to look at it, I see that it must have been an issue and poorly addressed at some point.
I have limited experience with boats and bottom painting and as such I have a number of questions already. Time to turn to the experts....
I do not wish to pay thousands to have the bottom completely stripped and left to dry for months then re-coated. I am quite prepared to do some serious sanding and try to get at least most of the old paint off and see what shape the hull is actually in. How do I tell what is bottom paint, barrier coat or gelcoat?
So far the top coat is black, then something rusty coloured and beneath that a light blue. I think the white that is showing through under the blue is gelcoat (please correct me if I am wrong). If I sand until I have mostly blue does that seem reasonable? I have 2 gallons of E Paint SN1HP. Should I be putting something under it?
Some of the blisters were sort of fixed previously and they show up as white spots. There are many more that I will attempt to deal with another time. There are also a few bigger spots that I can't explain, maybe the gel coat is completely gone and it's just exposed fibreglass.
The smile is not visibly open and it actually looks like a ridge of thick paint or gel coat portside with a jagged crack starboard. I'm not going to worry about that right now either, the bolts look good and snug but we will check to make sure they are correctly tightened.
In addition, there are little pockmarks all along the waterline, well most of it. They only appear to be in the paint/white stripe and quite shallow. I am assuming that this is not something that I need to panic over and I could just fill them all and sand smooth then repaint. I can't seem to find anywhere that can explain what causes this.
Thanks in advance for any and all assistance. I don't plan to fix all the problems at once but it would at least be nice to know what they are.....
1983 Catalina36 MkI #0157