It has already bought as many as four ships with Minneapolis-based Castlelake.
Castlelake, which changed its name from TPG Credit Management in late August, took its first dip into the shipping market in May, when together with Prime it acquired the 73,000-dwt tanker Pike (ex-Starling, built 2008) for a reported $24m.
In October, Prime was said to have bought the similar-size Hellespont Prosperity (built 2006) for $23.2m,
