The Langsa TAC has been ­producing oil through a leased FPSO, MV8 Langsa Venture, since early 2001.

That vessel was previously owned by Japan’s Modec, but in January this year it was sold to Blue Sky Langsa, a vessel-owning vehicle set up by the joint venture partners of the Langsa TAC.

The FPSO was subsequently to go on a fresh lease throughout ­December 2011, and Indonesian upstream regulation requires the Langsa joint venture to put out a tender for a new floater contract after the current contract expires.

The