Whether you employ a surveyor or not, you should know some of the things to look for if you have decided to buy a used boat. A keen eye, a good ear and a checklist will lead you to potential problems. One thing to look for:

Mismatched paint. This could indicate that the boat has been in an accident and had repairs made. Although this in and of itself may not disqualify the boat, if you were not told of the repairs what else might you not have been told about?

Source: Boatsafe.com