Kjell Inge Rokke's Ocean Yield has extended a charter option for a troublesome FPSO.

Rokke's Aker Energy signed a $3m agreement in February that could see it fix Dhirubhai-1 for 15 years on a bareboat basis.

This option period expires on Wednesday.

But Aker has now exercised a 30-day option on the option, against an "additional compensation."