Atlantic Star arrives at Mauá shipyard

The semi-submersible Atlantic Star arrived in Guanabara Bay today under tow by the AHTSs Valletta and Xavantes and is expected to berth at Estaleiro Mauá S/A following the completion of its workover campaign for Karoon Energy at the Baúna field.

The timing is significant.

Constellation’s contract with Karoon covered a one-well heavy workover campaign, while Karoon has since confirmed that the intervention on the SPS-92 well was successfully completed, restoring production to approximately 8,600 barrels of oil per day. The Atlantic Star’s arrival at Mauá comes immediately after the conclusion of that campaign, marking the end of its latest operational assignment.

The market is already watching Trident Energy as a possible next destination for the Atlantic Star. While no public contract award has been announced, Constellation Oil Services’s latest investor presentation places two developments side by side: the completion of the Karoon campaign and an open demand from Trident Energy for an anchor-moored drilling unit with start-up expected in 2027. Although the company does not explicitly connect the two, the sequence has naturally attracted the market’s attention.

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