Why was the wider Constellation program cancelled?

Why was the Constellation program cancelled?

The explanation offered is that the design still had not been settled. Known yard constraints contributed to delay, while the first two ships were still expected to be completed.

Shipyard backlogs and skilled-worker shortages are acknowledged as constraints that were already known when the yard received the order. The closing account cites April 2024 as a work-start date and reports only 12 percent completion by November 2025; its start-date wording is not reconciled with the earlier assessment's longer construction period. Congress, the second ship, had not yet been laid down. Both Constellation and Congress were nevertheless expected to be completed at the time of this discussion, with their eventual configuration still uncertain because design revisions continued. The explanation advanced for cancelling the wider program is the failure to settle that design, rather than the yard's condition alone. This remains an interpretation of the program's failure alongside the reported progress figures.