Turnaround investor W.L. Ross & Co. has made a $65 million equity investment in portfolio company Navigator Holdings, a marine tanker company based in Castletown, U.K. W.L. Ross acquired the company in October 2012, purchasing 4.4 million shares owned by Lehman Brothers for $110 million. The investment firm first bought a 19.4% stake in the company in November 2011 for $62.5 million. Jones Day served as W.L. Ross' legal advisor for the latest investment.