Buying used boat?

[Nasty]

Anyone has ever purchased a used boat with a lien on it? What kind of process will I have to go through to get the boat legally transfered to me? What kind of title on the boat would the bank be holding? All I would need is notorized bill of sale, notorized transfer of trailer, and transfer of boat registration certificate? And, I am guessing the boat can't be sold with a lien on it. So, I would need a notorized paper stating it is lien free before purchase? Has anyone gone through this process before? My guess would both of us settling everything at the lending bank.