Japan's MOL has confirmed its investment in six very large ethane carriers owned by India's Reliance.
The vessels were delivered in 2016 and 2017.
Reliance announced the deal this month and said MOL was teaming up with an unnamed investor for the transaction.
MOL made no mention of this and did not reveal what stake it would hold.
It said: "This development is in line with MOL’s philosophy of aiming for higher competitiveness in the field in terms of safety and reliable oceangoing transportation and meaningful contribution to the emerging energy transportation scenario."