It said the 70-bp anchor-handler CP Srivastava (built 1984) has gone to an unnamed buyer and has already been delivered.
The company did not reveal a price.
The deal leaves the owner with an anchor-handler fleet of eight ships, all of which are built from 2011 on, apart from one 1985-built vessel.
Another is due from Bharati Shipyard in India next year.
It has sold off another three elderly anchor-handlers over the last 18 months.