Offshore Merchant Partners has been reavealed as the investor who backed last month's private placement by listed tanker company Tsakos Energy Navigation (TEN).

A stock exchange filing has also revealed that the blue-chip Norwegian fund backed by private equity investor HitecVision is preparing to flip the shares it bought at what could be a considerable profit.

On Monday after the close of the New York Stock Exchange TEN filed for a “possible resale, from time to time” of up to 11.66m