"End of today or tomorrow we can release some of the big vessels," Luhut said in an interview on Monday with CNBC.

He said the government was also drawing up a new pricing structure for the so-called domestic market obligation, so the state utility firm PLN buys coal at market price.

(Reporting by Gayatri Suroyo and Bernadette Christina; Writing by Fransiska Nangoy; Editing by Martin Petty)