Tsakos Energy Navigation said it secured a time charter for the last open tanker in its newbuilding programme.
The New York-listed tanker owner put the 300,000-dwt Hercules I, which was delivered in January from Hyundai Samho Heavy Industries in South Korea.
"All 15 new vessels in TEN's growth program, including the five for the rest of this year, have full long-term employment," said chief executive Nikolas Tsakos, referring to a string of tankers that began to deliver in June 2016.
