Chinese yard Coso confirmed on Tuesday it had signed delivery documents for the circular rig, the second of four it is constructing for the Norwegian contractor.
Sevan Brasil is to operate in the Brazilian pre-salt on a six-year fixed contract for Brazilian oil giant Petrobras.
Cosco previously delivered the Sevan Driller, another semi-submersible drilling rig, to Sevan Drilling back in November 2009.
