When Sam Norton took the helm of Overseas Shipholding Group in 2016, the company had exited bankruptcy and spun off the international-flagged tanker fleet that represented most of its business.

As the OSG chief executive recalled in an interview, chairman Doug Wheat had asked him to set up a management team, “figure out what to do” with what was now a pure-play US-flagged tanker company and position the New York-listed shipowner to be sold.