Special WSB – Por onde anda? Astro Tupi

Where is she now? — Atlas Z (ex-Astro Tupi): One Vessel, Two Structures

By WSB Advisors

Much like the recent case of Astro CMT Matos—reborn as Seastar Virtus while raising unresolved questions around overlapping commercial and registry positioning—another case involving Astromaritima – em Recuperação Judicial now comes into focus.

This time, the vessel is the former Astro Tupi.

Now formally registered as Atlas Z, the vessel appears active. Market information indicates that she is being operated in Petrobras service as an OSRV through Galáxia Marítima S.A. At the same time, ANTAQ records show a time charter structure for the vessel starting in October 2025 registered in favor of Galáxia Navegação, a different company within the same group.

At the same time, however, Atlas Z is also presented as the sole vessel supporting the EBN structure of Lagoa Offshore (MCT Group). ANTAQ granted Lagoa Offshore its authorization to operate as an EBN in September 2025, in a process that, by its nature, presupposes the availability and operational control of the supporting vessel.

From a structural standpoint, the situation raises immediate questions.

Public records indicate that Atlas Z is tied to a Petrobras-linked time charter structure registered under Galáxia Navegação, while market information places the vessel in Petrobras service through Galáxia Marítima, and fleet records simultaneously associate the same vessel with Lagoa Offshore, with Astromaritima – em Recuperação Judicial remaining as owner. These are not alternative interpretations—they are parallel records.

This is where the inconsistency becomes difficult to reconcile.

If Lagoa Offshore is the disponent owner under a bareboat charter from Astromaritima – em Recuperação Judicial, it would not typically be able to relinquish operational control of its sole vessel while maintaining the basis of its EBN authorization. Conversely, if Lagoa Offshore has time-chartered the vessel into a structure connected to the Galáxia group, such arrangement would still need to align with Petrobras’ contractual framework, which generally requires that the contracted party retains full operational control, without subcontracting of the core service.

The picture becomes even less straightforward when the documented chain itself does not fully converge: the ANTAQ charter registration points to Galáxia Navegação, while the Petrobras operational context points to Galáxia Marítima.

The timeline adds further complexity.

The authorization of Lagoa Offshore as an EBN in September 2025 is closely followed by the commencement of the Petrobras-linked charter in October 2025 under Galáxia Navegação, while the vessel is understood to be operating for Petrobras through Galáxia Marítima. This sequencing does not readily support a straightforward contractual chain originating from Lagoa Offshore.

At this stage, two interpretations emerge.

Either Lagoa Offshore is not, in practice, the operator of the vessel despite supporting its EBN structure, or the operational reality differs from the contractual appearance presented across the regulatory and commercial records.

In either case, the alignment between registry, contract and operation remains unclear.

Astromaritima – em Recuperação Judicial, when asked about the vessel’s ownership, operation and contractual structure, stated that “Astro Tupi” remains an asset of the company and is inserted in a regular structure, without clarifying who operates it, under which contract, or why it already appears, in other contexts, as Atlas Z.

MCT has not yet responded to our inquiries.
We were unable to reach Galáxia.

As in other recent cases, the asset is visible, active and commercially engaged.
But structure, in offshore, is not a detail.
And one vessel cannot serve two masters.