The Turner's Gap was a type T2-SE-A1 Tanker, not a Liberty Ship. Don't have much data on her, but she was built by Sun Ship company with Hull #487 of the T-2 Tankers. Her keel was laid on 5-Mar-45 and she was delivered on 16-Jun-45. She was sold to ESSO in 1948, and became the "Stanvac Bangkok". She was scrapped in 1963. There are a couple of pictures of her and some general information at this link: http://www.aukevisser.nl/others/id551.htm.
This should help you with that one.