The Oslo-listed offshore outfit paid $83.4m for the 320,000 dwt Blue Opal, previously named the H Elephant for now-bankrupt Taiwanese owner TMT.
Several FPSO projects are being considered for the Blue Opal after it was inspected by BW Offshore in the last quarter of 2013.
According to vesselsvalue.com, the 2012-built tanker was purchased from DSME's shipping arm DK Maritime on 13 November 2013, leaving DK Maritime holding a pair of 2010-built VLCCs and a pair of 2011-built VLCCs.
Taiwanese shipowner TMT's financial woes prevented it from ever taking delivery of the vessel, along with one of its sister ships which was held by DK maritime and sold to a Teekay JV in May last year. TMT filed for Chapter 11 protection in June 2013.