Just purchased a '74 58TC which has an electric davit on the bridge. The dingy cradle appears to match a Whaler, but the seller didn't know the capacity of the davit (thought it was 500lbs., seriously doubt that). The dingy that came with the boat is a dinky little 8' hard plastic job with a 3.5HP Merc which I will replace with something more substantial. I'm considering a 12-15 RIB, but may go with a 13 Whaler that's for sale here locally. The davit is of pipe construction with a 110v electric winch. The boat is still in Florida, and I haven't measured the diameter of the pipe. If memory serves, it's probably about 4" in diameter, and it anchors through the bridge deck down into the upper salon deck, so it looks pretty stout. Was there a "standard" davit of this type on this vintage Hatt, or does anybody know how to determine the lift capacity of this unit?