Catalina 27 (79)
The Catalina 27's have all kinds of problems, but almost all of them are common to other boat brands; an older boat is going to have more problems. None of the problems are "catastrophic" but are irritants and can be repaired, this from a long list like leaky windows, leaking stanchions, leaking around the chain plate, etc.The only problem that will challenge, and it too is repairable, is the cut out in the transom for a motor (if your's has one). The cut out is designed for a smaller 2 stroke engine. When you go to purchase a new engine, you'll find you have only 4 strokes available - with a larger profile taking more room - which requires a larger cut out, a new type of bracket applied, or as I did, had the hole filled in and a power bracket applied.My boat is a 75 and had none of the "modern" amenities added, such as shore power, and adequate electrical power while under way to run things like a small 700 watt microwave, chart plotter, radar, etc.If you are getting an older boat, then come equipped with the psyche that there will be problems but you will take care of them. There are magazines and books dedicated to "reviving" older boats.To be honest, when I purchased my boat I past up on a survey. I knew the guy would hand me a long list of problems and it would discourage me from purchasing my Catalina. Instead I used the money saved to repair two problems my boat had. The hull on the boat was sound and that was basically all I cared about. Many areas of the boat need to be twigged, repaired, replaced, or polished. I started with the most "impacting" problems the boat had and I'm working my way down the list.You will find a lot of help on this forum, other forums, and sites of people who have "revived" their Catalina 27 and posted how to do it. One of the advantages of the Catalina is that there are so many of them around that the internet supports the care and maintenance of them quite well. This may not seem like much until you see some poor sap who has purchased a very small production run boat asking for help and no one responds. In England, it is the rage to purchase an older boat and bring them back to life. This concept is growing in North America, but will never be as popular due to the higher wages allowing purchases of more recent yeared boats. The Catalina 27 is a sound boat and will give you years of pleasure, but the boat you are looking at will most likely have issues you will need to address; if you are willing to accept that premise, you should enjoy many years of sailing on her.