Was not the main masts on them set of centre so as to make it hard for U boats to work out there course. I was on the Port Macquarie and she had her posts of centre so thinking that she might have originally been a Sam ship but the accomodation was aft on her which would not conform with the types you mention. Another liberty ship is the Montgomery and still being a nuisance to navigation as she is a wreck in the Thames Estuary and they still do not know what to do with it because of all the munitions still on board. As an aside have been out to her with my two bro's in a 14 foot dingy when I was about 13. Of course could not board her as she is under water only the masts and derricks where visible.
That's the way the mop flops.
My thanks to Brian for this site.